#!/usr/bin/env python
#
-# Copyright 2004,2005 Free Software Foundation, Inc.
+# Copyright 2004,2005,2007 Free Software Foundation, Inc.
#
# This file is part of GNU Radio
#
#
# GNU Radio is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
from gnuradio import gr, gru
from gnuradio import usrp
-import usrp_dbid
+from usrpm import usrp_dbid
from gnuradio import eng_notation
from gnuradio.eng_option import eng_option
-from gnuradio.wxgui import stdgui, ra_fftsink, ra_stripchartsink, waterfallsink, form, slider
+from gnuradio.wxgui import stdgui2, ra_fftsink, ra_stripchartsink, ra_waterfallsink, form, slider
from optparse import OptionParser
import wx
import sys
-from Numeric import *
-import FFT
+import Numeric
+import time
+import numpy.fft
import ephem
-from gnuradio.local_calibrator import *
-
-class app_flow_graph(stdgui.gui_flow_graph):
- def __init__(self, frame, panel, vbox, argv):
- stdgui.gui_flow_graph.__init__(self)
-
- self.frame = frame
- self.panel = panel
-
- parser = OptionParser(option_class=eng_option)
- parser.add_option("-R", "--rx-subdev-spec", type="subdev", default=(0, 0),
- help="select USRP Rx side A or B (default=A)")
- parser.add_option("-d", "--decim", type="int", default=16,
- help="set fgpa decimation rate to DECIM [default=%default]")
- parser.add_option("-f", "--freq", type="eng_float", default=None,
- help="set frequency to FREQ", metavar="FREQ")
- parser.add_option("-a", "--avg", type="eng_float", default=1.0,
- help="set spectral averaging alpha")
- parser.add_option("-i", "--integ", type="eng_float", default=1.0,
- help="set integration time")
- parser.add_option("-g", "--gain", type="eng_float", default=None,
- help="set gain in dB (default is midpoint)")
- parser.add_option("-l", "--reflevel", type="eng_float", default=30.0,
- help="Set Total power reference level")
- parser.add_option("-y", "--division", type="eng_float", default=0.5,
- help="Set Total power Y division size")
- parser.add_option("-e", "--longitude", type="eng_float", default=-76.02, help="Set Observer Longitude")
- parser.add_option("-c", "--latitude", type="eng_float", default=44.85, help="Set Observer Latitude")
- parser.add_option("-o", "--observing", type="eng_float", default=0.0,
- help="Set observing frequency")
- parser.add_option("-x", "--ylabel", default="dB", help="Y axis label")
- parser.add_option("-C", "--cfunc", default="default", help="Calibration function name")
- parser.add_option("-z", "--divbase", type="eng_float", default=0.025, help="Y Division increment base")
- parser.add_option("-v", "--stripsize", type="eng_float", default=2400, help="Size of stripchart, in 2Hz samples")
- parser.add_option("-F", "--fft_size", type="eng_float", default=1024, help="Size of FFT")
-
- parser.add_option("-N", "--decln", type="eng_float", default=999.99, help="Observing declination")
- parser.add_option("-I", "--interfilt", action="store_true", default=False)
- parser.add_option("-X", "--prefix", default="./")
- (options, args) = parser.parse_args()
- if len(args) != 0:
- parser.print_help()
- sys.exit(1)
-
- self.show_debug_info = True
-
- # build the graph
-
- self.u = usrp.source_c(decim_rate=options.decim)
- self.u.set_mux(usrp.determine_rx_mux_value(self.u, options.rx_subdev_spec))
- self.cardtype = self.u.daughterboard_id(0)
- # Set initial declination
- self.decln = options.decln
-
- # Turn off interference filter by default
- self.use_interfilt = options.interfilt
-
- # determine the daughterboard subdevice we're using
- self.subdev = usrp.selected_subdev(self.u, options.rx_subdev_spec)
-
- input_rate = self.u.adc_freq() / self.u.decim_rate()
-
- tpstr="calib_"+options.cfunc+"_total_power"
- sstr="calib_"+options.cfunc+"_fft"
- self.tpcfunc=eval(tpstr)
- self.scfunc=eval(sstr)
-
- #
- # Set prefix for data files
- #
- self.prefix = options.prefix
- calib_set_prefix(self.prefix)
-
- # Set up FFT display
- self.scope = ra_fftsink.ra_fft_sink_c (self, panel,
- fft_size=int(options.fft_size), sample_rate=input_rate,
- fft_rate=8, title="Spectral",
- cfunc=self.scfunc, xydfunc=self.xydfunc, interfunc=self.interference)
-
- # Set up ephemeris data
- self.locality = ephem.Observer()
- self.locality.long = str(options.longitude)
- self.locality.lat = str(options.latitude)
-
- # Set up stripchart display
- self.stripsize = int(options.stripsize)
- self.chart = ra_stripchartsink.stripchart_sink_f (self, panel,
- stripsize=self.stripsize,
- title="Continuum",
- xlabel="LMST Offset (Seconds)",
- scaling=1.0, ylabel=options.ylabel,
- divbase=options.divbase, cfunc=self.tpcfunc)
-
- # Set center frequency
- self.centerfreq = options.freq
-
- # Set observing frequency (might be different from actual programmed
- # RF frequency)
- if options.observing == 0.0:
- self.observing = options.freq
- else:
- self.observing = options.observing
-
- self.bw = input_rate
-
- #
- # Produce a default interference map
- # May not actually get used, unless --interfilt was specified
- #
- self.intmap = Numeric.zeros(256,Numeric.Complex64)
- for i in range(0,len(self.intmap)):
- self.intmap[i] = complex(1.0, 0.0)
-
- # We setup the first two integrators to produce a fixed integration
- # Down to 1Hz, with output at 1 samples/sec
- N = input_rate/5000
-
- # Second stage runs on decimated output of first
- M = (input_rate/N)
-
- # Create taps for first integrator
- t = range(0,N-1)
- tapsN = []
- for i in t:
- tapsN.append(1.0/N)
-
- # Create taps for second integrator
- t = range(0,M-1)
- tapsM = []
- for i in t:
- tapsM.append(1.0/M)
-
- #
- # The 3rd integrator is variable, and user selectable at runtime
- # This integrator doesn't decimate, but is used to set the
- # final integration time based on the constant 1Hz input samples
- # The strip chart is fed at a constant 1Hz rate as a result
- #
-
- #
- # Call constructors for receive chains
- #
-
- #
- # This is the interference-zapping filter
- #
- # The GUI is used to set/clear inteference zones in
- # the filter. The non-interfering zones are set to
- # 1.0.
- #
- if 0:
- self.interfilt = gr.fft_filter_ccc(1,self.intmap)
- tmp = FFT.inverse_fft(self.intmap)
- self.interfilt.set_taps(tmp)
-
- # The three integrators--two FIR filters, and an IIR final filter
- self.integrator1 = gr.fir_filter_fff (N, tapsN)
- self.integrator2 = gr.fir_filter_fff (M, tapsM)
- self.integrator3 = gr.single_pole_iir_filter_ff(1.0)
-
- # Split complex USRP stream into a pair of floats
- self.splitter = gr.complex_to_float (1);
- self.toshort = gr.float_to_short();
-
- # I squarer (detector)
- self.multI = gr.multiply_ff();
-
- # Q squarer (detector)
- self.multQ = gr.multiply_ff();
-
- # Adding squared I and Q to produce instantaneous signal power
- self.adder = gr.add_ff();
-
- #
- # Start connecting configured modules in the receive chain
- #
-
- # Connect interference-filtered USRP input to selected scope function
- if self.use_interfilt == True:
- self.connect(self.u, self.interfilt, self.scope)
- # Connect interference-filtered USRP to a complex->float splitter
- self.connect(self.interfilt, self.splitter)
-
- else:
- self.connect(self.u, self.scope)
- self.connect(self.u, self.splitter)
-
- # Connect splitter outputs to multipliers
- # First do I^2
- self.connect((self.splitter, 0), (self.multI,0))
- self.connect((self.splitter, 0), (self.multI,1))
-
- # Then do Q^2
- self.connect((self.splitter, 1), (self.multQ,0))
- self.connect((self.splitter, 1), (self.multQ,1))
-
- # Then sum the squares
- self.connect(self.multI, (self.adder,0))
- self.connect(self.multQ, (self.adder,1))
-
- # Connect adder output to three-stages of FIR integrator
- self.connect(self.adder, self.integrator1,
- self.integrator2, self.integrator3, self.chart)
-
-
- self._build_gui(vbox)
-
- # Make GUI agree with command-line
- self.myform['integration'].set_value(int(options.integ))
- self.myform['average'].set_value(int(options.avg))
-
- # Make integrator agree with command line
- self.set_integration(int(options.integ))
-
- # Make spectral averager agree with command line
- if options.avg != 1.0:
- self.scope.set_avg_alpha(float(1.0/options.avg))
- calib_set_avg_alpha(float(options.avg))
- self.scope.set_average(True)
-
-
- # Set division size
- self.chart.set_y_per_div(options.division)
-
- # Set reference(MAX) level
- self.chart.set_ref_level(options.reflevel)
-
- # set initial values
-
- if options.gain is None:
- # if no gain was specified, use the mid-point in dB
- g = self.subdev.gain_range()
- options.gain = float(g[0]+g[1])/2
-
- if options.freq is None:
- # if no freq was specified, use the mid-point
- r = self.subdev.freq_range()
- options.freq = float(r[0]+r[1])/2
-
- # Set the initial gain control
- self.set_gain(options.gain)
-
- if not(self.set_freq(options.freq)):
- self._set_status_msg("Failed to set initial frequency")
-
- self.set_decln (self.decln)
- calib_set_decln (self.decln)
-
- self.myform['decim'].set_value(self.u.decim_rate())
- self.myform['fs@usb'].set_value(self.u.adc_freq() / self.u.decim_rate())
- self.myform['dbname'].set_value(self.subdev.name())
-
- # Make sure calibrator knows what our bandwidth is
- calib_set_bw(self.u.adc_freq() / self.u.decim_rate())
-
- # Set analog baseband filtering, if DBS_RX
- if self.cardtype == usrp_dbid.DBS_RX:
- lbw = (self.u.adc_freq() / self.u.decim_rate()) / 2
- if lbw < 1.0e6:
- lbw = 1.0e6
- self.subdev.set_bw(lbw)
-
- # Tell calibrator our declination as well
- calib_set_decln(self.decln)
-
- # Start the timer for the LMST display
- self.lmst_timer.Start(1000)
-
-
- def _set_status_msg(self, msg):
- self.frame.GetStatusBar().SetStatusText(msg, 0)
-
- def _build_gui(self, vbox):
-
- def _form_set_freq(kv):
- return self.set_freq(kv['freq'])
-
- def _form_set_decln(kv):
- return self.set_decln(kv['decln'])
-
- # Position the FFT display
- vbox.Add(self.scope.win, 15, wx.EXPAND)
-
- # Position the Total-power stripchart
- vbox.Add(self.chart.win, 15, wx.EXPAND)
-
- # add control area at the bottom
- self.myform = myform = form.form()
- hbox = wx.BoxSizer(wx.HORIZONTAL)
- hbox.Add((7,0), 0, wx.EXPAND)
- vbox1 = wx.BoxSizer(wx.VERTICAL)
- myform['freq'] = form.float_field(
- parent=self.panel, sizer=vbox1, label="Center freq", weight=1,
- callback=myform.check_input_and_call(_form_set_freq, self._set_status_msg))
-
- vbox1.Add((4,0), 0, 0)
-
- myform['lmst_high'] = form.static_text_field(
- parent=self.panel, sizer=vbox1, label="Current LMST", weight=1)
- vbox1.Add((4,0), 0, 0)
-
- myform['spec_data'] = form.static_text_field(
- parent=self.panel, sizer=vbox1, label="Spectral Cursor", weight=1)
- vbox1.Add((4,0), 0, 0)
-
- vbox2 = wx.BoxSizer(wx.VERTICAL)
- g = self.subdev.gain_range()
- myform['gain'] = form.slider_field(parent=self.panel, sizer=vbox2, label="RF Gain",
- weight=1,
- min=int(g[0]), max=int(g[1]),
- callback=self.set_gain)
-
- vbox2.Add((4,0), 0, 0)
- myform['average'] = form.slider_field(parent=self.panel, sizer=vbox2,
- label="Spectral Averaging (FFT frames)", weight=1, min=1, max=2000, callback=self.set_averaging)
-
- vbox2.Add((4,0), 0, 0)
-
- myform['integration'] = form.slider_field(parent=self.panel, sizer=vbox2,
- label="Continuum Integration Time (sec)", weight=1, min=1, max=180, callback=self.set_integration)
-
- vbox2.Add((4,0), 0, 0)
- myform['decln'] = form.float_field(
- parent=self.panel, sizer=vbox2, label="Current Declination", weight=1,
- callback=myform.check_input_and_call(_form_set_decln))
- vbox2.Add((4,0), 0, 0)
-
- buttonbox = wx.BoxSizer(wx.HORIZONTAL)
- if self.use_interfilt == True:
- self.doit = form.button_with_callback(self.panel,
- label="Clear Interference List",
- callback=self.clear_interferers)
- if self.use_interfilt == True:
- buttonbox.Add(self.doit, 0, wx.CENTER)
- vbox.Add(buttonbox, 0, wx.CENTER)
- hbox.Add(vbox1, 0, 0)
- hbox.Add(vbox2, wx.ALIGN_RIGHT, 0)
- vbox.Add(hbox, 0, wx.EXPAND)
-
- self._build_subpanel(vbox)
-
- self.lmst_timer = wx.PyTimer(self.lmst_timeout)
- self.lmst_timeout()
-
-
- def _build_subpanel(self, vbox_arg):
- # build a secondary information panel (sometimes hidden)
-
- # FIXME figure out how to have this be a subpanel that is always
- # created, but has its visibility controlled by foo.Show(True/False)
-
- if not(self.show_debug_info):
- return
-
- panel = self.panel
- vbox = vbox_arg
- myform = self.myform
-
- #panel = wx.Panel(self.panel, -1)
- #vbox = wx.BoxSizer(wx.VERTICAL)
-
- hbox = wx.BoxSizer(wx.HORIZONTAL)
- hbox.Add((5,0), 0)
- myform['decim'] = form.static_float_field(
- parent=panel, sizer=hbox, label="Decim")
-
- hbox.Add((5,0), 1)
- myform['fs@usb'] = form.static_float_field(
- parent=panel, sizer=hbox, label="Fs@USB")
-
- hbox.Add((5,0), 1)
- myform['dbname'] = form.static_text_field(
- parent=panel, sizer=hbox)
-
- hbox.Add((5,0), 1)
- myform['baseband'] = form.static_float_field(
- parent=panel, sizer=hbox, label="Analog BB")
-
- hbox.Add((5,0), 1)
- myform['ddc'] = form.static_float_field(
- parent=panel, sizer=hbox, label="DDC")
-
- hbox.Add((5,0), 0)
- vbox.Add(hbox, 0, wx.EXPAND)
-
-
-
- def set_freq(self, target_freq):
- """
- Set the center frequency we're interested in.
-
- @param target_freq: frequency in Hz
- @rypte: bool
-
- Tuning is a two step process. First we ask the front-end to
- tune as close to the desired frequency as it can. Then we use
- the result of that operation and our target_frequency to
- determine the value for the digital down converter.
- """
- #
- # Everything except BASIC_RX should support usrp.tune()
- #
- if not (self.cardtype == usrp_dbid.BASIC_RX):
- r = usrp.tune(self.u, 0, self.subdev, target_freq)
- else:
- r = self.u.set_rx_freq(0, target_freq)
- f = self.u.rx_freq(0)
- if abs(f-target_freq) > 2.0e3:
- r = 0
- if r:
- self.myform['freq'].set_value(target_freq) # update displayed value
- #
- # Make sure calibrator knows our target freq
- #
-
- # Remember centerfreq---used for doppler calcs
- delta = self.centerfreq - target_freq
- self.centerfreq = target_freq
- self.observing -= delta
- self.scope.set_baseband_freq (self.observing)
- calib_set_freq(self.observing)
-
- # Clear interference list
- self.clear_interferers()
-
- self.myform['baseband'].set_value(r.baseband_freq)
- self.myform['ddc'].set_value(r.dxc_freq)
-
- return True
-
- return False
-
- def set_decln(self, dec):
- self.decln = dec
- self.myform['decln'].set_value(dec) # update displayed value
- calib_set_decln(dec)
-
- def set_gain(self, gain):
- self.myform['gain'].set_value(gain) # update displayed value
- self.subdev.set_gain(gain)
-
- #
- # Make sure calibrator knows our gain setting
- #
- calib_set_gain(gain)
-
- def set_averaging(self, avval):
- self.myform['average'].set_value(avval)
- self.scope.set_avg_alpha(1.0/(avval))
- calib_set_avg_alpha(avval)
- self.scope.set_average(True)
-
- def set_integration(self, integval):
- self.integrator3.set_taps(1.0/integval)
- self.myform['integration'].set_value(integval)
-
- #
- # Make sure calibrator knows our integration time
- #
- calib_set_integ(integval)
-
- def lmst_timeout(self):
- self.locality.date = ephem.now()
- sidtime = self.locality.sidereal_time()
- self.myform['lmst_high'].set_value(str(ephem.hours(sidtime)))
-
- def xydfunc(self,xyv):
- magn = int(log10(self.observing))
- if (magn == 6 or magn == 7 or magn == 8):
- magn = 6
- dfreq = xyv[0] * pow(10.0,magn)
- ratio = self.observing / dfreq
- vs = 1.0 - ratio
- vs *= 299792.0
- if magn >= 9:
- xhz = "Ghz"
- elif magn >= 6:
- xhz = "Mhz"
- elif magn <= 5:
- xhz = "Khz"
- s = "%.6f%s\n%.3fdB" % (xyv[0], xhz, xyv[1])
- s2 = "\n%.3fkm/s" % vs
- self.myform['spec_data'].set_value(s+s2)
-
- def interference(self,x):
- if self.use_interfilt == False:
- return
- magn = int(log10(self.observing))
- dfreq = x * pow(10.0,magn)
- delta = dfreq - self.observing
- fincr = self.bw / len(self.intmap)
- l = len(self.intmap)
- if delta > 0:
- offset = delta/fincr
- else:
- offset = (l) - int((abs(delta)/fincr))
-
- offset = int(offset)
-
- if offset >= len(self.intmap) or offset < 0:
- print "interference offset is invalid--", offset
- return
-
- #
- # Zero out the region around the selected interferer
- #
- self.intmap[offset-2] = complex (0.5, 0.0)
- self.intmap[offset-1] = complex (0.25, 0.0)
- self.intmap[offset] = complex (0.0, 0.0)
- self.intmap[offset+1] = complex(0.25, 0.0)
- self.intmap[offset+2] = complex(0.5, 0.0)
-
- #
- # Set new taps
- #
- tmp = FFT.inverse_fft(self.intmap)
- self.interfilt.set_taps(tmp)
-
- def clear_interf(self):
- self.clear_interferers()
-
- def clear_interferers(self):
- for i in range(0,len(self.intmap)):
- self.intmap[i] = complex(1.0,0.0)
- tmp = FFT.inverse_fft(self.intmap)
- if self.use_interfilt == True:
- self.interfilt.set_taps(tmp)
-
-
-
- def toggle_cal(self):
- if (self.calstate == True):
- self.calstate = False
- self.u.write_io(0,0,(1<<15))
- self.calibrator.SetLabel("Calibration Source: Off")
- else:
- self.calstate = True
- self.u.write_io(0,(1<<15),(1<<15))
- self.calibrator.SetLabel("Calibration Source: On")
-
- def toggle_annotation(self):
- if (self.annotate_state == True):
- self.annotate_state = False
- self.annotation.SetLabel("Annotation: Off")
- else:
- self.annotate_state = True
- self.annotation.SetLabel("Annotation: On")
- calib_set_interesting(self.annotate_state)
-
+class app_flow_graph(stdgui2.std_top_block):
+ def __init__(self, frame, panel, vbox, argv):
+ stdgui2.std_top_block.__init__(self, frame, panel, vbox, argv)
+
+ self.frame = frame
+ self.panel = panel
+
+ parser = OptionParser(option_class=eng_option)
+ parser.add_option("-R", "--rx-subdev-spec", type="subdev", default=(0, 0),
+ help="select USRP Rx side A or B (default=A)")
+ parser.add_option("-d", "--decim", type="int", default=16,
+ help="set fgpa decimation rate to DECIM [default=%default]")
+ parser.add_option("-f", "--freq", type="eng_float", default=None,
+ help="set frequency to FREQ", metavar="FREQ")
+ parser.add_option("-a", "--avg", type="eng_float", default=1.0,
+ help="set spectral averaging alpha")
+ parser.add_option("-i", "--integ", type="eng_float", default=1.0,
+ help="set integration time")
+ parser.add_option("-g", "--gain", type="eng_float", default=None,
+ help="set gain in dB (default is midpoint)")
+ parser.add_option("-l", "--reflevel", type="eng_float", default=30.0,
+ help="Set Total power reference level")
+ parser.add_option("-y", "--division", type="eng_float", default=0.5,
+ help="Set Total power Y division size")
+ parser.add_option("-e", "--longitude", type="eng_float", default=-76.02,help="Set Observer Longitude")
+ parser.add_option("-c", "--latitude", type="eng_float", default=44.85,help="Set Observer Latitude")
+ parser.add_option("-o", "--observing", type="eng_float", default=0.0,
+ help="Set observing frequency")
+ parser.add_option("-x", "--ylabel", default="dB", help="Y axis label")
+ parser.add_option("-z", "--divbase", type="eng_float", default=0.025, help="Y Division increment base")
+ parser.add_option("-v", "--stripsize", type="eng_float", default=2400, help="Size of stripchart, in 2Hz samples")
+ parser.add_option("-F", "--fft_size", type="eng_float", default=1024, help="Size of FFT")
+ parser.add_option("-N", "--decln", type="eng_float", default=999.99, help="Observing declination")
+ parser.add_option("-X", "--prefix", default="./")
+ parser.add_option("-M", "--fft_rate", type="eng_float", default=8.0, help="FFT Rate")
+ parser.add_option("-A", "--calib_coeff", type="eng_float", default=1.0, help="Calibration coefficient")
+ parser.add_option("-B", "--calib_offset", type="eng_float", default=0.0, help="Calibration coefficient")
+ parser.add_option("-W", "--waterfall", action="store_true", default=False, help="Use Waterfall FFT display")
+ parser.add_option("-S", "--setimode", action="store_true", default=False, help="Enable SETI processing of spectral data")
+ parser.add_option("-K", "--setik", type="eng_float", default=1.5, help="K value for SETI analysis")
+ parser.add_option("-T", "--setibandwidth", type="eng_float", default=12500, help="Instantaneous SETI observing bandwidth--must be divisor of 250Khz")
+ parser.add_option("-Q", "--seti_range", type="eng_float", default=1.0e6, help="Total scan width, in Hz for SETI scans")
+ parser.add_option("-Z", "--dual_mode", action="store_true",
+ default=False, help="Dual-polarization mode")
+ parser.add_option("-I", "--interferometer", action="store_true", default=False, help="Interferometer mode")
+ parser.add_option("-D", "--switch_mode", action="store_true", default=False, help="Dicke Switching mode")
+ parser.add_option("-P", "--reference_divisor", type="eng_float", default=1.0, help="Reference Divisor")
+ parser.add_option("-U", "--ref_fifo", default=None)
+ parser.add_option("-k", "--notch_taps", type="int", default=64, help="Number of notch taps")
+ parser.add_option("-n", "--notches", action="store_true",
+ default=False, help="Notch frequencies after all other args")
+ parser.add_option("-Y", "--interface", default=None)
+ parser.add_option("-H", "--mac_addr", default=None)
+
+ # Added this documentation
+
+ (options, args) = parser.parse_args()
+
+ self.setimode = options.setimode
+ self.dual_mode = options.dual_mode
+ self.interferometer = options.interferometer
+ self.normal_mode = False
+ self.switch_mode = options.switch_mode
+ self.switch_state = 0
+ self.reference_divisor = options.reference_divisor
+ self.ref_fifo = options.ref_fifo
+ self.usrp2 = False
+ self.decim = options.decim
+ self.rx_subdev_spec = options.rx_subdev_spec
+
+ if (options.interface != None and options.mac_addr != None):
+ self.mac_addr = options.mac_addr
+ self.interface = options.interface
+ self.usrp2 = True
+
+ self.NOTCH_TAPS = options.notch_taps
+ self.notches = Numeric.zeros(self.NOTCH_TAPS,Numeric.Float64)
+ # Get notch locations
+ j = 0
+ for i in args:
+ self.notches[j] = float(i)
+ j = j + 1
+
+ self.use_notches = options.notches
+
+ if (self.ref_fifo != None):
+ self.ref_fifo_file = open (self.ref_fifo, "r")
+
+ modecount = 0
+ for modes in (self.dual_mode, self.interferometer):
+ if (modes == True):
+ modecount = modecount + 1
+
+ if (modecount > 1):
+ print "must select only 1 of --dual_mode, or --interferometer"
+ sys.exit(1)
+
+ self.chartneeded = True
+
+ if (self.setimode == True):
+ self.chartneeded = False
+
+ if (self.setimode == True and self.interferometer == True):
+ print "can't pick both --setimode and --interferometer"
+ sys.exit(1)
+
+ if (self.setimode == True and self.switch_mode == True):
+ print "can't pick both --setimode and --switch_mode"
+ sys.exit(1)
+
+ if (self.interferometer == True and self.switch_mode == True):
+ print "can't pick both --interferometer and --switch_mode"
+ sys.exit(1)
+
+ if (modecount == 0):
+ self.normal_mode = True
+
+ self.show_debug_info = True
+
+ # Pick up waterfall option
+ self.waterfall = options.waterfall
+
+ # SETI mode stuff
+ self.setimode = options.setimode
+ self.seticounter = 0
+ self.setik = options.setik
+ self.seti_fft_bandwidth = int(options.setibandwidth)
+
+ # Calculate binwidth
+ binwidth = self.seti_fft_bandwidth / options.fft_size
+
+ # Use binwidth, and knowledge of likely chirp rates to set reasonable
+ # values for SETI analysis code. We assume that SETI signals will
+ # chirp at somewhere between 0.10Hz/sec and 0.25Hz/sec.
+ #
+ # upper_limit is the "worst case"--that is, the case for which we have
+ # to wait the longest to actually see any drift, due to the quantizing
+ # on FFT bins.
+ upper_limit = binwidth / 0.10
+ self.setitimer = int(upper_limit * 2.00)
+ self.scanning = True
+
+ # Calculate the CHIRP values based on Hz/sec
+ self.CHIRP_LOWER = 0.10 * self.setitimer
+ self.CHIRP_UPPER = 0.25 * self.setitimer
+
+ # Reset hit counters to 0
+ self.hitcounter = 0
+ self.s1hitcounter = 0
+ self.s2hitcounter = 0
+ self.avgdelta = 0
+ # We scan through 2Mhz of bandwidth around the chosen center freq
+ self.seti_freq_range = options.seti_range
+ # Calculate lower edge
+ self.setifreq_lower = options.freq - (self.seti_freq_range/2)
+ self.setifreq_current = options.freq
+ # Calculate upper edge
+ self.setifreq_upper = options.freq + (self.seti_freq_range/2)
+
+ # Maximum "hits" in a line
+ self.nhits = 20
+
+ # Number of lines for analysis
+ self.nhitlines = 4
+
+ # We change center frequencies based on nhitlines and setitimer
+ self.setifreq_timer = self.setitimer * (self.nhitlines * 5)
+
+ # Create actual timer
+ self.seti_then = time.time()
+
+ # The hits recording array
+ self.hits_array = Numeric.zeros((self.nhits,self.nhitlines), Numeric.Float64)
+ self.hit_intensities = Numeric.zeros((self.nhits,self.nhitlines), Numeric.Float64)
+ # Calibration coefficient and offset
+ self.calib_coeff = options.calib_coeff
+ self.calib_offset = options.calib_offset
+ if self.calib_offset < -750:
+ self.calib_offset = -750
+ if self.calib_offset > 750:
+ self.calib_offset = 750
+
+ if self.calib_coeff < 1:
+ self.calib_coeff = 1
+ if self.calib_coeff > 100:
+ self.calib_coeff = 100
+
+ self.integ = options.integ
+ self.avg_alpha = options.avg
+ self.gain = options.gain
+ self.decln = options.decln
+
+ # Set initial values for datalogging timed-output
+ self.continuum_then = time.time()
+ self.spectral_then = time.time()
+
+
+ # build the graph
+
+ self.subdev = [(0, 0), (0,0)]
+
+ #
+ # If SETI mode, we always run at maximum USRP decimation
+ #
+ if (self.setimode):
+ options.decim = 256
+
+ if (self.dual_mode == True and self.decim <= 4):
+ print "Cannot use decim <= 4 with dual_mode"
+ sys.exit(1)
+
+ self.setup_usrp()
+
+ # Set initial declination
+ self.decln = options.decln
+
+ input_rate = self.u.adc_freq() / self.u.decim_rate()
+ self.bw = input_rate
+ #
+ # Set prefix for data files
+ #
+ self.prefix = options.prefix
+
+ #
+ # The lower this number, the fewer sample frames are dropped
+ # in computing the FFT. A sampled approach is taken to
+ # computing the FFT of the incoming data, which reduces
+ # sensitivity. Increasing sensitivity inreases CPU loading.
+ #
+ self.fft_rate = options.fft_rate
+
+ self.fft_size = int(options.fft_size)
+
+ # This buffer is used to remember the most-recent FFT display
+ # values. Used later by self.write_spectral_data() to write
+ # spectral data to datalogging files, and by the SETI analysis
+ # function.
+ #
+ self.fft_outbuf = Numeric.zeros(self.fft_size, Numeric.Float64)
+
+ #
+ # If SETI mode, only look at seti_fft_bandwidth
+ # at a time.
+ #
+ if (self.setimode):
+ self.fft_input_rate = self.seti_fft_bandwidth
+
+ #
+ # Build a decimating bandpass filter
+ #
+ self.fft_input_taps = gr.firdes.complex_band_pass (1.0,
+ input_rate,
+ -(int(self.fft_input_rate/2)), int(self.fft_input_rate/2), 200,
+ gr.firdes.WIN_HAMMING, 0)
+
+ #
+ # Compute required decimation factor
+ #
+ decimation = int(input_rate/self.fft_input_rate)
+ self.fft_bandpass = gr.fir_filter_ccc (decimation,
+ self.fft_input_taps)
+ else:
+ self.fft_input_rate = input_rate
+
+ # Set up FFT display
+ if self.waterfall == False:
+ self.scope = ra_fftsink.ra_fft_sink_c (panel,
+ fft_size=int(self.fft_size), sample_rate=self.fft_input_rate,
+ fft_rate=int(self.fft_rate), title="Spectral",
+ ofunc=self.fft_outfunc, xydfunc=self.xydfunc)
+ else:
+ self.scope = ra_waterfallsink.waterfall_sink_c (panel,
+ fft_size=int(self.fft_size), sample_rate=self.fft_input_rate,
+ fft_rate=int(self.fft_rate), title="Spectral", ofunc=self.fft_outfunc, size=(1100, 600), xydfunc=self.xydfunc, ref_level=0, span=10)
+
+ # Set up ephemeris data
+ self.locality = ephem.Observer()
+ self.locality.long = str(options.longitude)
+ self.locality.lat = str(options.latitude)
+
+ # We make notes about Sunset/Sunrise in Continuum log files
+ self.sun = ephem.Sun()
+ self.sunstate = "??"
+
+ # Set up stripchart display
+ tit = "Continuum"
+ if (self.dual_mode != False):
+ tit = "H+V Continuum"
+ if (self.interferometer != False):
+ tit = "East x West Correlation"
+ self.stripsize = int(options.stripsize)
+ if self.chartneeded == True:
+ self.chart = ra_stripchartsink.stripchart_sink_f (panel,
+ stripsize=self.stripsize,
+ title=tit,
+ xlabel="LMST Offset (Seconds)",
+ scaling=1.0, ylabel=options.ylabel,
+ divbase=options.divbase)
+
+ # Set center frequency
+ self.centerfreq = options.freq
+
+ # Set observing frequency (might be different from actual programmed
+ # RF frequency)
+ if options.observing == 0.0:
+ self.observing = options.freq
+ else:
+ self.observing = options.observing
+
+ # Remember our input bandwidth
+ self.bw = input_rate
+
+ #
+ #
+ # The strip chart is fed at a constant 1Hz rate
+ #
+
+ #
+ # Call constructors for receive chains
+ #
+
+ if (self.dual_mode == True):
+ self.setup_dual (self.setimode)
+
+ if (self.interferometer == True):
+ self.setup_interferometer(self.setimode)
+
+ if (self.normal_mode == True):
+ self.setup_normal(self.setimode)
+
+ if (self.setimode == True):
+ self.setup_seti()
+
+ self._build_gui(vbox)
+
+ # Make GUI agree with command-line
+ self.integ = options.integ
+ if self.setimode == False:
+ self.myform['integration'].set_value(int(options.integ))
+ self.myform['offset'].set_value(self.calib_offset)
+ self.myform['dcgain'].set_value(self.calib_coeff)
+ self.myform['average'].set_value(int(options.avg))
+
+
+ if self.setimode == False:
+ # Make integrator agree with command line
+ self.set_integration(int(options.integ))
+
+ self.avg_alpha = options.avg
+
+ # Make spectral averager agree with command line
+ if options.avg != 1.0:
+ self.scope.set_avg_alpha(float(1.0/options.avg))
+ self.scope.set_average(True)
+
+ if self.setimode == False:
+ # Set division size
+ self.chart.set_y_per_div(options.division)
+ # Set reference(MAX) level
+ self.chart.set_ref_level(options.reflevel)
+
+ # set initial values
+
+ if options.gain is None:
+ # if no gain was specified, use the mid-point in dB
+ g = self.subdev[0].gain_range()
+ options.gain = float(g[0]+g[1])/2
+
+ if options.freq is None:
+ # if no freq was specified, use the mid-point
+ r = self.subdev[0].freq_range()
+ options.freq = float(r[0]+r[1])/2
+
+ # Set the initial gain control
+ self.set_gain(options.gain)
+
+ if not(self.set_freq(options.freq)):
+ self._set_status_msg("Failed to set initial frequency")
+
+ # Set declination
+ self.set_decln (self.decln)
+
+
+ # RF hardware information
+ self.myform['decim'].set_value(self.u.decim_rate())
+ self.myform['USB BW'].set_value(self.u.adc_freq() / self.u.decim_rate())
+ if (self.dual_mode == True):
+ self.myform['dbname'].set_value(self.subdev[0].name()+'/'+self.subdev[1].name())
+ else:
+ self.myform['dbname'].set_value(self.subdev[0].name())
+
+ # Set analog baseband filtering, if DBS_RX
+ if self.cardtype == usrp_dbid.DBS_RX:
+ lbw = (self.u.adc_freq() / self.u.decim_rate()) / 2
+ if lbw < 1.0e6:
+ lbw = 1.0e6
+ self.subdev[0].set_bw(lbw)
+ self.subdev[1].set_bw(lbw)
+
+ # Start the timer for the LMST display and datalogging
+ self.lmst_timer.Start(1000)
+ if (self.switch_mode == True):
+ self.other_timer.Start(330)
+
+
+ def _set_status_msg(self, msg):
+ self.frame.GetStatusBar().SetStatusText(msg, 0)
+
+ def _build_gui(self, vbox):
+
+ def _form_set_freq(kv):
+ # Adjust current SETI frequency, and limits
+ self.setifreq_lower = kv['freq'] - (self.seti_freq_range/2)
+ self.setifreq_current = kv['freq']
+ self.setifreq_upper = kv['freq'] + (self.seti_freq_range/2)
+
+ # Reset SETI analysis timer
+ self.seti_then = time.time()
+ # Zero-out hits array when changing frequency
+ self.hits_array[:,:] = 0.0
+ self.hit_intensities[:,:] = -60.0
+
+ return self.set_freq(kv['freq'])
+
+ def _form_set_decln(kv):
+ return self.set_decln(kv['decln'])
+
+ # Position the FFT display
+ vbox.Add(self.scope.win, 15, wx.EXPAND)
+
+ if self.setimode == False:
+ # Position the Total-power stripchart
+ vbox.Add(self.chart.win, 15, wx.EXPAND)
+
+ # add control area at the bottom
+ self.myform = myform = form.form()
+ hbox = wx.BoxSizer(wx.HORIZONTAL)
+ hbox.Add((7,0), 0, wx.EXPAND)
+ vbox1 = wx.BoxSizer(wx.VERTICAL)
+ myform['freq'] = form.float_field(
+ parent=self.panel, sizer=vbox1, label="Center freq", weight=1,
+ callback=myform.check_input_and_call(_form_set_freq, self._set_status_msg))
+
+ vbox1.Add((4,0), 0, 0)
+
+ myform['lmst_high'] = form.static_text_field(
+ parent=self.panel, sizer=vbox1, label="Current LMST", weight=1)
+ vbox1.Add((4,0), 0, 0)
+
+ if self.setimode == False:
+ myform['spec_data'] = form.static_text_field(
+ parent=self.panel, sizer=vbox1, label="Spectral Cursor", weight=1)
+ vbox1.Add((4,0), 0, 0)
+
+ vbox2 = wx.BoxSizer(wx.VERTICAL)
+ if self.setimode == False:
+ vbox3 = wx.BoxSizer(wx.VERTICAL)
+ g = self.subdev[0].gain_range()
+ myform['gain'] = form.slider_field(parent=self.panel, sizer=vbox2, label="RF Gain",
+ weight=1,
+ min=int(g[0]), max=int(g[1]),
+ callback=self.set_gain)
+
+ vbox2.Add((4,0), 0, 0)
+ if self.setimode == True:
+ max_savg = 100
+ else:
+ max_savg = 3000
+ myform['average'] = form.slider_field(parent=self.panel, sizer=vbox2,
+ label="Spectral Averaging (FFT frames)", weight=1, min=1, max=max_savg, callback=self.set_averaging)
+
+ # Set up scan control button when in SETI mode
+ if (self.setimode == True):
+ # SETI scanning control
+ buttonbox = wx.BoxSizer(wx.HORIZONTAL)
+ self.scan_control = form.button_with_callback(self.panel,
+ label="Scan: On ",
+ callback=self.toggle_scanning)
+
+ buttonbox.Add(self.scan_control, 0, wx.CENTER)
+ vbox2.Add(buttonbox, 0, wx.CENTER)
+
+ vbox2.Add((4,0), 0, 0)
+
+ if self.setimode == False:
+ myform['integration'] = form.slider_field(parent=self.panel, sizer=vbox2,
+ label="Continuum Integration Time (sec)", weight=1, min=1, max=180, callback=self.set_integration)
+
+ vbox2.Add((4,0), 0, 0)
+
+ myform['decln'] = form.float_field(
+ parent=self.panel, sizer=vbox2, label="Current Declination", weight=1,
+ callback=myform.check_input_and_call(_form_set_decln))
+ vbox2.Add((4,0), 0, 0)
+
+ if self.setimode == False:
+ myform['offset'] = form.slider_field(parent=self.panel, sizer=vbox3,
+ label="Post-Detector Offset", weight=1, min=-750, max=750,
+ callback=self.set_pd_offset)
+ vbox3.Add((2,0), 0, 0)
+ myform['dcgain'] = form.slider_field(parent=self.panel, sizer=vbox3,
+ label="Post-Detector Gain", weight=1, min=1, max=100,
+ callback=self.set_pd_gain)
+ vbox3.Add((2,0), 0, 0)
+ hbox.Add(vbox1, 0, 0)
+ hbox.Add(vbox2, wx.ALIGN_RIGHT, 0)
+
+ if self.setimode == False:
+ hbox.Add(vbox3, wx.ALIGN_RIGHT, 0)
+
+ vbox.Add(hbox, 0, wx.EXPAND)
+
+ self._build_subpanel(vbox)
+
+ self.lmst_timer = wx.PyTimer(self.lmst_timeout)
+ self.other_timer = wx.PyTimer(self.other_timeout)
+
+
+ def _build_subpanel(self, vbox_arg):
+ # build a secondary information panel (sometimes hidden)
+
+ # FIXME figure out how to have this be a subpanel that is always
+ # created, but has its visibility controlled by foo.Show(True/False)
+
+ if not(self.show_debug_info):
+ return
+
+ panel = self.panel
+ vbox = vbox_arg
+ myform = self.myform
+
+ #panel = wx.Panel(self.panel, -1)
+ #vbox = wx.BoxSizer(wx.VERTICAL)
+
+ hbox = wx.BoxSizer(wx.HORIZONTAL)
+ hbox.Add((5,0), 0)
+ myform['decim'] = form.static_float_field(
+ parent=panel, sizer=hbox, label="Decim")
+
+ hbox.Add((5,0), 1)
+ myform['USB BW'] = form.static_float_field(
+ parent=panel, sizer=hbox, label="USB BW")
+
+ hbox.Add((5,0), 1)
+ myform['dbname'] = form.static_text_field(
+ parent=panel, sizer=hbox)
+
+ hbox.Add((5,0), 1)
+ myform['baseband'] = form.static_float_field(
+ parent=panel, sizer=hbox, label="Analog BB")
+
+ hbox.Add((5,0), 1)
+ myform['ddc'] = form.static_float_field(
+ parent=panel, sizer=hbox, label="DDC")
+
+ hbox.Add((5,0), 0)
+ vbox.Add(hbox, 0, wx.EXPAND)
+
+
+
+ def set_freq(self, target_freq):
+ """
+ Set the center frequency we're interested in.
+
+ @param target_freq: frequency in Hz
+
+ """
+ #
+ #
+ r = usrp.tune(self.u, self.subdev[0].which(), self.subdev[0], target_freq)
+ r = usrp.tune(self.u, self.subdev[1].which(), self.subdev[1], target_freq)
+ if r:
+ self.myform['freq'].set_value(target_freq) # update displayed value
+ #
+ # Make sure calibrator knows our target freq
+ #
+
+ # Remember centerfreq---used for doppler calcs
+ delta = self.centerfreq - target_freq
+ self.centerfreq = target_freq
+ self.observing -= delta
+ self.scope.set_baseband_freq (self.observing)
+ self.myform['baseband'].set_value(r.baseband_freq)
+ self.myform['ddc'].set_value(r.dxc_freq)
+
+ if (self.use_notches):
+ self.compute_notch_taps(self.notches)
+ if self.dual_mode == False and self.interferometer == False:
+ self.notch_filt.set_taps(self.notch_taps)
+ else:
+ self.notch_filt1.set_taps(self.notch_taps)
+ self.notch_filt2.set_taps(self.notch_taps)
+
+ return True
+
+ return False
+
+ def set_decln(self, dec):
+ self.decln = dec
+ self.myform['decln'].set_value(dec) # update displayed value
+
+ def set_gain(self, gain):
+ self.myform['gain'].set_value(gain) # update displayed value
+ self.subdev[0].set_gain(gain)
+ self.subdev[1].set_gain(gain)
+ self.gain = gain
+
+ def set_averaging(self, avval):
+ self.myform['average'].set_value(avval)
+ self.scope.set_avg_alpha(1.0/(avval))
+ self.scope.set_average(True)
+ self.avg_alpha = avval
+
+ def set_integration(self, integval):
+ if self.setimode == False:
+ self.integrator.set_taps(1.0/((integval)*(self.bw/2)))
+ self.myform['integration'].set_value(integval)
+ self.integ = integval
+
+ #
+ # Timeout function
+ # Used to update LMST display, as well as current
+ # continuum value
+ #
+ # We also write external data-logging files here
+ #
+ def lmst_timeout(self):
+ self.locality.date = ephem.now()
+ if self.setimode == False:
+ x = self.probe.level()
+ sidtime = self.locality.sidereal_time()
+ # LMST
+ s = str(ephem.hours(sidtime)) + " " + self.sunstate
+ # Continuum detector value
+ if self.setimode == False:
+ sx = "%7.4f" % x
+ s = s + "\nDet: " + str(sx)
+ else:
+ sx = "%2d" % self.hitcounter
+ s1 = "%2d" % self.s1hitcounter
+ s2 = "%2d" % self.s2hitcounter
+ sa = "%4.2f" % self.avgdelta
+ sy = "%3.1f-%3.1f" % (self.CHIRP_LOWER, self.CHIRP_UPPER)
+ s = s + "\nHits: " + str(sx) + "\nS1:" + str(s1) + " S2:" + str(s2)
+ s = s + "\nAv D: " + str(sa) + "\nCh lim: " + str(sy)
+
+ self.myform['lmst_high'].set_value(s)
+
+ #
+ # Write data out to recording files
+ #
+ if self.setimode == False:
+ self.write_continuum_data(x,sidtime)
+ self.write_spectral_data(self.fft_outbuf,sidtime)
+
+ else:
+ self.seti_analysis(self.fft_outbuf,sidtime)
+ now = time.time()
+ if ((self.scanning == True) and ((now - self.seti_then) > self.setifreq_timer)):
+ self.seti_then = now
+ self.setifreq_current = self.setifreq_current + self.fft_input_rate
+ if (self.setifreq_current > self.setifreq_upper):
+ self.setifreq_current = self.setifreq_lower
+ self.set_freq(self.setifreq_current)
+ # Make sure we zero-out the hits array when changing
+ # frequency.
+ self.hits_array[:,:] = 0.0
+ self.hit_intensities[:,:] = 0.0
+
+ def other_timeout(self):
+ if (self.switch_state == 0):
+ self.switch_state = 1
+
+ elif (self.switch_state == 1):
+ self.switch_state = 0
+
+ if (self.switch_state == 0):
+ self.mute.set_n(1)
+ self.cmute.set_n(int(1.0e9))
+
+ elif (self.switch_state == 1):
+ self.mute.set_n(int(1.0e9))
+ self.cmute.set_n(1)
+
+ if (self.ref_fifo != "@@@@"):
+ self.ref_fifo_file.write(str(self.switch_state)+"\n")
+ self.ref_fifo_file.flush()
+
+ self.avg_reference_value = self.cprobe.level()
+
+ #
+ # Set reference value
+ #
+ self.reference_level.set_k(-1.0 * (self.avg_reference_value/self.reference_divisor))
+
+ def fft_outfunc(self,data,l):
+ self.fft_outbuf=data
+
+ def write_continuum_data(self,data,sidtime):
+
+ # Create localtime structure for producing filename
+ foo = time.localtime()
+ pfx = self.prefix
+ filenamestr = "%s/%04d%02d%02d%02d" % (pfx, foo.tm_year,
+ foo.tm_mon, foo.tm_mday, foo.tm_hour)
+
+ # Open the data file, appending
+ continuum_file = open (filenamestr+".tpdat","a")
+
+ flt = "%6.3f" % data
+ inter = self.decln
+ integ = self.integ
+ fc = self.observing
+ fc = fc / 1000000
+ bw = self.bw
+ bw = bw / 1000000
+ ga = self.gain
+
+ now = time.time()
+
+ #
+ # If time to write full header info (saves storage this way)
+ #
+ if (now - self.continuum_then > 20):
+ self.sun.compute(self.locality)
+ enow = ephem.now()
+ sunset = self.locality.next_setting(self.sun)
+ sunrise = self.locality.next_rising(self.sun)
+ sun_insky = "Down"
+ self.sunstate = "Dn"
+ if ((sunrise < enow) and (enow < sunset)):
+ sun_insky = "Up"
+ self.sunstate = "Up"
+ self.continuum_then = now
+
+ continuum_file.write(str(ephem.hours(sidtime))+" "+flt+" Dn="+str(inter)+",")
+ continuum_file.write("Ti="+str(integ)+",Fc="+str(fc)+",Bw="+str(bw))
+ continuum_file.write(",Ga="+str(ga)+",Sun="+str(sun_insky)+"\n")
+ else:
+ continuum_file.write(str(ephem.hours(sidtime))+" "+flt+"\n")
+
+ continuum_file.close()
+ return(data)
+
+ def write_spectral_data(self,data,sidtime):
+
+ now = time.time()
+ delta = 10
+
+ # If time to write out spectral data
+ # We don't write this out every time, in order to
+ # save disk space. Since the spectral data are
+ # typically heavily averaged, writing this data
+ # "once in a while" is OK.
+ #
+ if (now - self.spectral_then >= delta):
+ self.spectral_then = now
+
+ # Get localtime structure to make filename from
+ foo = time.localtime()
+
+ pfx = self.prefix
+ filenamestr = "%s/%04d%02d%02d%02d" % (pfx, foo.tm_year,
+ foo.tm_mon, foo.tm_mday, foo.tm_hour)
+
+ # Open the file
+ spectral_file = open (filenamestr+".sdat","a")
+
+ # Setup data fields to be written
+ r = data
+ inter = self.decln
+ fc = self.observing
+ fc = fc / 1000000
+ bw = self.bw
+ bw = bw / 1000000
+ av = self.avg_alpha
+
+ # Write those fields
+ spectral_file.write("data:"+str(ephem.hours(sidtime))+" Dn="+str(inter)+",Fc="+str(fc)+",Bw="+str(bw)+",Av="+str(av))
+ spectral_file.write (" [ ")
+ for r in data:
+ spectral_file.write(" "+str(r))
+
+ spectral_file.write(" ]\n")
+ spectral_file.close()
+ return(data)
+
+ return(data)
+
+ def seti_analysis(self,fftbuf,sidtime):
+ l = len(fftbuf)
+ x = 0
+ hits = []
+ hit_intensities = []
+ if self.seticounter < self.setitimer:
+ self.seticounter = self.seticounter + 1
+ return
+ else:
+ self.seticounter = 0
+
+ # Run through FFT output buffer, computing standard deviation (Sigma)
+ avg = 0
+ # First compute average
+ for i in range(0,l):
+ avg = avg + fftbuf[i]
+ avg = avg / l
+
+ sigma = 0.0
+ # Then compute standard deviation (Sigma)
+ for i in range(0,l):
+ d = fftbuf[i] - avg
+ sigma = sigma + (d*d)
+
+ sigma = Numeric.sqrt(sigma/l)
+
+ #
+ # Snarfle through the FFT output buffer again, looking for
+ # outlying data points
+
+ start_f = self.observing - (self.fft_input_rate/2)
+ current_f = start_f
+ l = len(fftbuf)
+ f_incr = self.fft_input_rate / l
+ hit = -1
+
+ # -nyquist to DC
+ for i in range(l/2,l):
+ #
+ # If current FFT buffer has an item that exceeds the specified
+ # sigma
+ #
+ if ((fftbuf[i] - avg) > (self.setik * sigma)):
+ hits.append(current_f)
+ hit_intensities.append(fftbuf[i])
+ current_f = current_f + f_incr
+
+ # DC to nyquist
+ for i in range(0,l/2):
+ #
+ # If current FFT buffer has an item that exceeds the specified
+ # sigma
+ #
+ if ((fftbuf[i] - avg) > (self.setik * sigma)):
+ hits.append(current_f)
+ hit_intensities.append(fftbuf[i])
+ current_f = current_f + f_incr
+
+ # No hits
+ if (len(hits) <= 0):
+ return
+
+
+ #
+ # OK, so we have some hits in the FFT buffer
+ # They'll have a rather substantial gauntlet to run before
+ # being declared a real "hit"
+ #
+
+ # Update stats
+ self.s1hitcounter = self.s1hitcounter + len(hits)
+
+ # Weed out buffers with an excessive number of
+ # signals above Sigma
+ if (len(hits) > self.nhits):
+ return
+
+
+ # Weed out FFT buffers with apparent multiple narrowband signals
+ # separated significantly in frequency. This means that a
+ # single signal spanning multiple bins is OK, but a buffer that
+ # has multiple, apparently-separate, signals isn't OK.
+ #
+ last = hits[0]
+ ns2 = 1
+ for i in range(1,len(hits)):
+ if ((hits[i] - last) > (f_incr*3.0)):
+ return
+ last = hits[i]
+ ns2 = ns2 + 1
+
+ self.s2hitcounter = self.s2hitcounter + ns2
+
+ #
+ # Run through all available hit buffers, computing difference between
+ # frequencies found there, if they're all within the chirp limits
+ # declare a good hit
+ #
+ good_hit = False
+ f_ds = Numeric.zeros(self.nhitlines, Numeric.Float64)
+ avg_delta = 0
+ k = 0
+ for i in range(0,min(len(hits),len(self.hits_array[:,0]))):
+ f_ds[0] = abs(self.hits_array[i,0] - hits[i])
+ for j in range(1,len(f_ds)):
+ f_ds[j] = abs(self.hits_array[i,j] - self.hits_array[i,0])
+ avg_delta = avg_delta + f_ds[j]
+ k = k + 1
+
+ if (self.seti_isahit (f_ds)):
+ good_hit = True
+ self.hitcounter = self.hitcounter + 1
+ break
+
+ if (avg_delta/k < (self.seti_fft_bandwidth/2)):
+ self.avgdelta = avg_delta / k
+
+ # Save 'n shuffle hits
+ # Old hit buffers percolate through the hit buffers
+ # (there are self.nhitlines of these buffers)
+ # and then drop off the end
+ # A consequence is that while the nhitlines buffers are filling,
+ # you can get some absurd values for self.avgdelta, because some
+ # of the buffers are full of zeros
+ for i in range(self.nhitlines,1):
+ self.hits_array[:,i] = self.hits_array[:,i-1]
+ self.hit_intensities[:,i] = self.hit_intensities[:,i-1]
+
+ for i in range(0,len(hits)):
+ self.hits_array[i,0] = hits[i]
+ self.hit_intensities[i,0] = hit_intensities[i]
+
+ # Finally, write the hits/intensities buffer
+ if (good_hit):
+ self.write_hits(sidtime)
+
+ return
+
+ def seti_isahit(self,fdiffs):
+ truecount = 0
+
+ for i in range(0,len(fdiffs)):
+ if (fdiffs[i] >= self.CHIRP_LOWER and fdiffs[i] <= self.CHIRP_UPPER):
+ truecount = truecount + 1
+
+ if truecount == len(fdiffs):
+ return (True)
+ else:
+ return (False)
+
+ def write_hits(self,sidtime):
+ # Create localtime structure for producing filename
+ foo = time.localtime()
+ pfx = self.prefix
+ filenamestr = "%s/%04d%02d%02d%02d" % (pfx, foo.tm_year,
+ foo.tm_mon, foo.tm_mday, foo.tm_hour)
+
+ # Open the data file, appending
+ hits_file = open (filenamestr+".seti","a")
+
+ # Write sidtime first
+ hits_file.write(str(ephem.hours(sidtime))+" "+str(self.decln)+" ")
+
+ #
+ # Then write the hits/hit intensities buffers with enough
+ # "syntax" to allow parsing by external (not yet written!)
+ # "stuff".
+ #
+ for i in range(0,self.nhitlines):
+ hits_file.write(" ")
+ for j in range(0,self.nhits):
+ hits_file.write(str(self.hits_array[j,i])+":")
+ hits_file.write(str(self.hit_intensities[j,i])+",")
+ hits_file.write("\n")
+ hits_file.close()
+ return
+
+ def xydfunc(self,func,xyv):
+ if self.setimode == True:
+ return
+ magn = int(Numeric.log10(self.observing))
+ if (magn == 6 or magn == 7 or magn == 8):
+ magn = 6
+ dfreq = xyv[0] * pow(10.0,magn)
+ if func == 0:
+ ratio = self.observing / dfreq
+ vs = 1.0 - ratio
+ vs *= 299792.0
+ if magn >= 9:
+ xhz = "Ghz"
+ elif magn >= 6:
+ xhz = "Mhz"
+ elif magn <= 5:
+ xhz = "Khz"
+ s = "%.6f%s\n%.3fdB" % (xyv[0], xhz, xyv[1])
+ s2 = "\n%.3fkm/s" % vs
+ self.myform['spec_data'].set_value(s+s2)
+ else:
+ tmpnotches = Numeric.zeros(self.NOTCH_TAPS,Numeric.Float64)
+ delfreq = -1
+ if self.use_notches == True:
+ for i in range(0,len(self.notches)):
+ if self.notches[i] != 0 and abs(self.notches[i] - dfreq) < ((self.bw/self.NOTCH_TAPS)/2.0):
+ delfreq = i
+ break
+ j = 0
+ for i in range(0,len(self.notches)):
+ if (i != delfreq):
+ tmpnotches[j] = self.notches[i]
+ j = j + 1
+ if (delfreq == -1):
+ for i in range(0,len(tmpnotches)):
+ if (int(tmpnotches[i]) == 0):
+ tmpnotches[i] = dfreq
+ break
+ self.notches = tmpnotches
+ self.compute_notch_taps(self.notches)
+ if self.dual_mode == False and self.interferometer == False:
+ self.notch_filt.set_taps(self.notch_taps)
+ else:
+ self.notch_filt1.set_taps(self.notch_taps)
+ self.notch_filt2.set_taps(self.notch_taps)
+
+ def xydfunc_waterfall(self,pos):
+ lower = self.observing - (self.seti_fft_bandwidth / 2)
+ upper = self.observing + (self.seti_fft_bandwidth / 2)
+ binwidth = self.seti_fft_bandwidth / 1024
+ s = "%.6fMHz" % ((lower + (pos.x*binwidth)) / 1.0e6)
+ self.myform['spec_data'].set_value(s)
+
+ def toggle_cal(self):
+ if (self.calstate == True):
+ self.calstate = False
+ self.u.write_io(0,0,(1<<15))
+ self.calibrator.SetLabel("Calibration Source: Off")
+ else:
+ self.calstate = True
+ self.u.write_io(0,(1<<15),(1<<15))
+ self.calibrator.SetLabel("Calibration Source: On")
+
+ def toggle_annotation(self):
+ if (self.annotate_state == True):
+ self.annotate_state = False
+ self.annotation.SetLabel("Annotation: Off")
+ else:
+ self.annotate_state = True
+ self.annotation.SetLabel("Annotation: On")
+ #
+ # Turn scanning on/off
+ # Called-back by "Recording" button
+ #
+ def toggle_scanning(self):
+ # Current scanning? Flip state
+ if (self.scanning == True):
+ self.scanning = False
+ self.scan_control.SetLabel("Scan: Off")
+ # Not scanning
+ else:
+ self.scanning = True
+ self.scan_control.SetLabel("Scan: On ")
+
+ def set_pd_offset(self,offs):
+ self.myform['offset'].set_value(offs)
+ self.calib_offset=offs
+ x = self.calib_coeff / 100.0
+ self.cal_offs.set_k(offs*(x*8000))
+
+ def set_pd_gain(self,gain):
+ self.myform['dcgain'].set_value(gain)
+ self.cal_mult.set_k(gain*0.01)
+ self.calib_coeff = gain
+ x = gain/100.0
+ self.cal_offs.set_k(self.calib_offset*(x*8000))
+
+ def compute_notch_taps(self,notchlist):
+ tmptaps = Numeric.zeros(self.NOTCH_TAPS,Numeric.Complex64)
+ binwidth = self.bw / self.NOTCH_TAPS
+
+ for i in range(0,self.NOTCH_TAPS):
+ tmptaps[i] = complex(1.0,0.0)
+
+ for i in notchlist:
+ diff = i - self.observing
+ if int(i) == 0:
+ break
+ if ((i < (self.observing - self.bw/2)) or (i > (self.observing + self.bw/2))):
+ continue
+ if (diff > 0):
+ idx = diff / binwidth
+ idx = round(idx)
+ idx = int(idx)
+ if (idx < 0 or idx > (self.NOTCH_TAPS/2)):
+ break
+ tmptaps[idx] = complex(0.0, 0.0)
+
+ if (diff < 0):
+ idx = -diff / binwidth
+ idx = round(idx)
+ idx = (self.NOTCH_TAPS/2) - idx
+ idx = int(idx+(self.NOTCH_TAPS/2))
+ if (idx < 0 or idx >= (self.NOTCH_TAPS)):
+ break
+ tmptaps[idx] = complex(0.0, 0.0)
+
+ self.notch_taps = numpy.fft.ifft(tmptaps)
+
+ #
+ # Setup common pieces of radiometer mode
+ #
+ def setup_radiometer_common(self,n):
+ # The IIR integration filter for post-detection
+ self.integrator = gr.single_pole_iir_filter_ff(1.0)
+ self.integrator.set_taps (1.0/self.bw)
+
+ if (self.use_notches == True):
+ self.compute_notch_taps(self.notches)
+ if (n == 2):
+ self.notch_filt1 = gr.fft_filter_ccc(1, self.notch_taps)
+ self.notch_filt2 = gr.fft_filter_ccc(1, self.notch_taps)
+ else:
+ self.notch_filt = gr.fft_filter_ccc(1, self.notch_taps)
+
+
+ # Signal probe
+ self.probe = gr.probe_signal_f()
+
+ #
+ # Continuum calibration stuff
+ #
+ x = self.calib_coeff/100.0
+ self.cal_mult = gr.multiply_const_ff(self.calib_coeff/100.0)
+ self.cal_offs = gr.add_const_ff(self.calib_offset*(x*8000))
+
+ #
+ # Mega decimator after IIR filter
+ #
+ if (self.switch_mode == False):
+ self.keepn = gr.keep_one_in_n(gr.sizeof_float, self.bw)
+ else:
+ self.keepn = gr.keep_one_in_n(gr.sizeof_float, int(self.bw/2))
+
+ #
+ # For the Dicke-switching scheme
+ #
+ #self.switch = gr.multiply_const_ff(1.0)
+
+ #
+ if (self.switch_mode == True):
+ self.vector = gr.vector_sink_f()
+ self.swkeep = gr.keep_one_in_n(gr.sizeof_float, int(self.bw/3))
+ self.mute = gr.keep_one_in_n(gr.sizeof_float, 1)
+ self.cmute = gr.keep_one_in_n(gr.sizeof_float, int(1.0e9))
+ self.cintegrator = gr.single_pole_iir_filter_ff(1.0/(self.bw/2))
+ self.cprobe = gr.probe_signal_f()
+ else:
+ self.mute = gr.multiply_const_ff(1.0)
+
+
+ self.avg_reference_value = 0.0
+ self.reference_level = gr.add_const_ff(0.0)
+
+ #
+ # Setup ordinary single-channel radiometer mode
+ #
+ def setup_normal(self, setimode):
+
+ self.setup_radiometer_common(1)
+
+ self.head = self.u
+ if (self.use_notches == True):
+ self.shead = self.notch_filt
+ else:
+ self.shead = self.u
+
+ if setimode == False:
+
+ self.detector = gr.complex_to_mag_squared()
+ self.connect(self.shead, self.scope)
+
+ if (self.use_notches == False):
+ self.connect(self.head, self.detector, self.mute, self.reference_level,
+ self.integrator, self.keepn, self.cal_mult, self.cal_offs, self.chart)
+ else:
+ self.connect(self.head, self.notch_filt, self.detector, self.mute, self.reference_level,
+ self.integrator, self.keepn, self.cal_mult, self.cal_offs, self.chart)
+
+ self.connect(self.cal_offs, self.probe)
+
+ #
+ # Add a side-chain detector chain, with a different integrator, for sampling
+ # The reference channel data
+ # This is used to derive the offset value for self.reference_level, used above
+ #
+ if (self.switch_mode == True):
+ self.connect(self.detector, self.cmute, self.cintegrator, self.swkeep, self.cprobe)
+
+ return
+
+ #
+ # Setup dual-channel (two antenna, usual orthogonal polarity probes in the same waveguide)
+ #
+ def setup_dual(self, setimode):
+
+ self.setup_radiometer_common(2)
+
+ self.di = gr.deinterleave(gr.sizeof_gr_complex)
+ self.addchans = gr.add_cc ()
+ self.detector = gr.add_ff ()
+ self.h_power = gr.complex_to_mag_squared()
+ self.v_power = gr.complex_to_mag_squared()
+ self.connect (self.u, self.di)
+
+ if (self.use_notches == True):
+ self.connect((self.di, 0), self.notch_filt1, (self.addchans, 0))
+ self.connect((self.di, 1), self.notch_filt2, (self.addchans, 1))
+ else:
+ #
+ # For spectral, adding the two channels works, assuming no gross
+ # phase or amplitude error
+ self.connect ((self.di, 0), (self.addchans, 0))
+ self.connect ((self.di, 1), (self.addchans, 1))
+
+ #
+ # Connect heads of spectral and total-power chains
+ #
+ if (self.use_notches == False):
+ self.head = self.di
+ else:
+ self.head = (self.notch_filt1, self.notch_filt2)
+
+ self.shead = self.addchans
+
+ if (setimode == False):
+ #
+ # For dual-polarization mode, we compute the sum of the
+ # powers on each channel, after they've been detected
+ #
+ self.detector = gr.add_ff()
+
+ #
+ # In dual-polarization mode, we compute things a little differently
+ # In effect, we have two radiometer chains, terminating in an adder
+ #
+ if self.use_notches == True:
+ self.connect(self.notch_filt1, self.h_power)
+ self.connect(self.notch_filt2, self.v_power)
+ else:
+ self.connect((self.head, 0), self.h_power)
+ self.connect((self.head, 1), self.v_power)
+ self.connect(self.h_power, (self.detector, 0))
+ self.connect(self.v_power, (self.detector, 1))
+ self.connect(self.detector, self.mute, self.reference_level,
+ self.integrator, self.keepn, self.cal_mult, self.cal_offs, self.chart)
+ self.connect(self.cal_offs, self.probe)
+ self.connect(self.shead, self.scope)
+
+ #
+ # Add a side-chain detector chain, with a different integrator, for sampling
+ # The reference channel data
+ # This is used to derive the offset value for self.reference_level, used above
+ #
+ if (self.switch_mode == True):
+ self.connect(self.detector, self.cmute, self.cintegrator, self.swkeep, self.cprobe)
+ return
+
+ #
+ # Setup correlating interferometer mode
+ #
+ def setup_interferometer(self, setimode):
+ self.setup_radiometer_common(2)
+
+ self.di = gr.deinterleave(gr.sizeof_gr_complex)
+ self.connect (self.u, self.di)
+ self.corr = gr.multiply_cc()
+ self.c2f = gr.complex_to_float()
+
+ self.shead = (self.di, 0)
+
+ # Channel 0 to multiply port 0
+ # Channel 1 to multiply port 1
+ if (self.use_notches == False):
+ self.connect((self.di, 0), (self.corr, 0))
+ self.connect((self.di, 1), (self.corr, 1))
+ else:
+ self.connect((self.di, 0), self.notch_filt1, (self.corr, 0))
+ self.connect((self.di, 1), self.notch_filt2, (self.corr, 0))
+
+ #
+ # Multiplier (correlator) to complex-to-float, followed by integrator, etc
+ #
+ self.connect(self.corr, self.c2f, self.integrator, self.keepn, self.cal_mult, self.cal_offs, self.chart)
+
+ #
+ # FFT scope gets only 1 channel
+ # FIX THIS, by cross-correlating the *outputs* of two different FFTs, then display
+ # Funky!
+ #
+ self.connect(self.shead, self.scope)
+
+ #
+ # Output of correlator/integrator chain to probe
+ #
+ self.connect(self.cal_offs, self.probe)
+
+ return
+
+ #
+ # Setup SETI mode
+ #
+ def setup_seti(self):
+ self.connect (self.shead, self.fft_bandpass, self.scope)
+ return
+
+ def setup_usrp(self):
+
+ if (self.usrp2 == False):
+ if (self.dual_mode == False and self.interferometer == False):
+ if (self.decim > 4):
+ self.u = usrp.source_c(decim_rate=self.decim,fusb_block_size=8192)
+ else:
+ self.u = usrp.source_c(decim_rate=self.decim,fusb_block_size=8192, fpga_filename="std_4rx_0tx.rbf")
+ self.u.set_mux(usrp.determine_rx_mux_value(self.u, self.rx_subdev_spec))
+ # determine the daughterboard subdevice we're using
+ self.subdev[0] = usrp.selected_subdev(self.u, self.rx_subdev_spec)
+ self.subdev[1] = self.subdev[0]
+ self.cardtype = self.subdev[0].dbid()
+ else:
+ self.u=usrp.source_c(decim_rate=self.decim, nchan=2,fusb_block_size=8192)
+ self.subdev[0] = usrp.selected_subdev(self.u, (0, 0))
+ self.subdev[1] = usrp.selected_subdev(self.u, (1, 0))
+ self.cardtype = self.subdev[0].dbid()
+ self.u.set_mux(0x32103210)
+ c1 = self.subdev[0].name()
+ c2 = self.subdev[1].name()
+ if (c1 != c2):
+ print "Must have identical cardtypes for --dual_mode or --interferometer"
+ sys.exit(1)
+ #
+ # Set 8-bit mode
+ #
+
+ width = 8
+ shift = 8
+ format = self.u.make_format(width, shift)
+ r = self.u.set_format(format)
+ else:
+ if (self.dual_mode == True or self.interferometer == True):
+ print "Cannot use dual_mode or interferometer with single USRP2"
+ sys.exit(1)
+ self.u = usrp2.source_32fc(self.interface, self.mac_addr)
+ self.u.set_decim (self.decim)
+ self.cardtype = self.u.daughterboard_id()
def main ():
- app = stdgui.stdapp(app_flow_graph, "RADIO ASTRONOMY SPECTRAL/CONTINUUM RECEIVER: $Revision: 6077 $", nstatus=1)
- app.MainLoop()
+ app = stdgui2.stdapp(app_flow_graph, "RADIO ASTRONOMY SPECTRAL/CONTINUUM RECEIVER: $Revision: 10631 $", nstatus=1)
+ app.MainLoop()
if __name__ == '__main__':
- main ()
+ main ()
projects / debian / gnuradio / blobdiff