X-Git-Url: https://git.gag.com/?a=blobdiff_plain;f=CHANGES;h=e1bd762b22ef5ff8198097bfbd82a462f5fe2f29;hb=49350c09f112a613dc33e9a5e116a1a3c0f06997;hp=b8060bbf8bdfc63cd6a4b945a815831e6f4a3ab7;hpb=996bd803ab22572b622b684221c9a8ca04b3f63a;p=debian%2Fsplat diff --git a/CHANGES b/CHANGES index b8060bb..e1bd762 100644 --- a/CHANGES +++ b/CHANGES @@ -1,5 +1,193 @@ +Release 1.2.1: +By John A. Magliacane (18-Oct-07): + +* SPLAT! now imports transmitter effective radiated power information and + predicts received field strength signal levels (dBuV/m) and antenna + voltage based on the transmitter's antenna pattern, computed path loss, + and ERP. ERP information is specified on the ninth line of SPLAT! .lrp + files. + +* The ability to plot signal strength contour maps has been added. The + color schemes for plotting signal strength and path loss contour maps + can now be customized by editing the contents of .scf and .lcf files + for each transmitter site. In addition, both signal strength and path + loss contour maps can now be generated for multiple transmitter sites, + with the greatest signal strength (or least path loss) illustrated in + overlapping regions between sites. + +* A new -ngs switch assigns all topography to the color white in .ppm + contour maps. The white background can be made transparent using + simple graphics utilities for merging SPLAT! contour maps with other + Mercator projection maps and graphics files of equivalent size and + resolution. + +* Path loss and signal strength contour regions can now be exported to + Google Earth as a semi-transparent ground overlay using the -kml switch. + +* The default contour map filename now defaults to the basename of the + transmitter site .qth file (or first transmitter site within a network) + with a .ppm extension (rather than "map.ppm"). + +* The Fresnel zone clearance percentage, which was fixed at 60% in the + past, is now user-definable using the new -fz command-line option. + +* Information previously contained in SPLAT! Obstruction Reports has now + been merged with Longley-Rice path loss information into a single Path + Analysis report (with a .txt extension). (Longley-Rice output (.lro) + files are no longer generated.) + +* Graph plotting (the -l option) no longer needs to be forced to perform + a Longley-Rice path analysis in point-to-point mode. If a .lrp file is + available and contains the information needed, Longley-Rice path loss + information will be automatically included in SPLAT!'s Path Analysis + Report when performing a point-to-point analysis. + +* In addition to information previously contained, SPLAT! Path Loss Output + (-plo) files now contain additional information including path loss + considering the effects of the transmitting antenna's radiation pattern + (if pattern data is available), and field strength values (dBuV/m) + based on pattern data and ERP data (if available). An asterisk at + the end of each line indicates the path to the point referenced in + the file is obstructed by terrain. + +* The srtm2sdf utility now handles 3-arc second SRTM in .BIL (Band + Interleaved by Line) format, as well as the usual .HGT format. + +* SPLAT!'s associated itm.cpp file was updated to include the latest + public domain ITM code released on June 26, 2007. + +* References in source code and documentation to "slots" and "MAXSLOTS" + have been changed to "pages" and "MAXPAGES", respectively. + +* Two bugs affecting the plotting of Fresnel zones were identified and fixed. + +* A bug that produced some erroneous elevation angles in SPLAT! Path Loss + Output (-plo option) files was identified and fixed. + +* Text documentation in Spanish was added (thanks to Charles Esobar). + +* The build scripts were modified to permit successful compilation with + bzip2-1.0.4 libraries. (Thanks to Janek, SQ5MJL) + +---------------------------------------------------------------------------- + +Release 1.2.0: +By John A. Magliacane, (22-Dec-2006): + +* All graph plotting has been enhanced to include distances, azimuths, + and in some cases, elevation angles, in numeric form. Height + plots (-h option) now include a contour of the Earth's curvature. + A new -H option was added that behaves the same as -h, except its + display of heights is normalized to the heights of the endpoints + along the plotted path. Graphs now default to PNG rather than GIF + format to reflect gnuplot's current trend away from .gif output. + (.gif is still available if your version of gnuplot supports it.) + Postscript output is now generated in enhanced color. + +* SPLAT! can now determine and plot Fresnel Zone clearances. A new + -f command-line option permits the Fresnel Zone frequency (in MHz) + to be specified, otherwise it can be determined from .lrp files when + path-loss calculations are performed. Antenna height requirements + for 60% clearance (0.6 F1) and 100% clearance (F1) of the First + Fresnel Zone now appear in Obstruction Reports. These zones are + also displayed graphically in height plots (-h or -H options). + +* Support for antenna radiation patterns has been added. SPLAT! now + reads normalized azimuth and elevation antenna field pattern data + from separate .az and .el files when Longley-Rice studies are performed. + One degree azimuth and one tenth degree elevation pattern resolution + is supported along with azimuthal pattern rotation and mechanical + vertical beam tilt. + +* A bug in the interpretation of the -n and -N command-line options + was fixed. + +* Negative geographical coordinates in DMS format are now (hopefully) + interpreted and displayed better than before. + +* SPLAT! data handling can be changed from imperial units (feet/miles) + to metric (meters/kilometers) units using the new -metric switch. + +* SPLAT! can now generate topographic maps without plotting + line-of-sight or path loss coverage. These maps are centered + approximately on the given tx_site, extend out to a radius + provided by the -R switch, and can be populated with county + boundaries and city names, just like SPLAT!'s traditional + line-of-sight and path loss maps. + +* Support for user-defined terrain files (ground clutter) has been + added. + +* SPLAT! can now generate .geo Geo-reference Information Files + when .ppm topography and coverage maps are created, permitting + the integration of SPLAT! generated maps with X Amateur Station + Tracking and Information Reporting (www.xastir.org) software. + +* SPLAT! can now generate .kml Keyhole Markup Language files that + when imported into "Google Map", dramatically illustrate the RF + path between transmitter and receiver locations when performing + point-to-point analyses. + +* Support for exporting Longley-Rice path loss contour studies to + external data files has been included. SPLAT! path loss files can + be used for performing coverage or interference studies outside of + SPLAT!. They can also be modified externally (with antenna pattern + data, for example) through scripts or small utilities, and imported + back into SPLAT! to generate coverage maps based on the revised + data without having to re-run any time intensive Longley-Rice path + loss calculations. + +* The documentation was updated to reflect the new features and + functionality of the software. + +---------------------------------------------------------------------------- + +Release 1.1.1: +By John A. Magliacane, (01-Apr-2006): + +* An srtm2sdf utility was added to permit SPLAT Data Files to be + derived from the latest 3-arc second SRTM (STS-99 Space Shuttle + Radar Topography Mission) digital elevation model data. The + quality of this data is *significantly* higher than that of older + USGS Digital Elevation Models previously used by SPLAT!. Despite + the higher quality, some voids in SRTM data sets still exist. + When voids are detected, the srtm2sdf utility replaces them with + equivalent elevation data found in existing SDF files (presumably + generated from older USGS elevation models). If older SDF files + are not available, voids are handled through pixel averaging or + direct replacement. + +* Coding changes were made that in concert with the new srtm2sdf utility + should allow SPLAT! to function over all regions of the planet for + which SRTM-3 elevation data is available. + +* SPLAT's SDF search path priority has been changed. SPLAT! now + searches for needed SDF files in the current working directory first. + If the needed file isn't found, SPLAT! then searches in the path + specified by the -d command-line option, or in the $HOME/.splat_path + file. + +* The color scheme used by SPLAT! in the generation of Longley-Rice + path loss maps was noticeably improved. + +* A new command-line option (-db) was added to allow constraints + to be placed on the maximum attenuation contours plotted on + path loss maps. + +* A possible array overflow condition in the ReadPath() function was + identified and fixed. + +* Some very slight coding modifications were made to permit warning-free + compilation under GCC 4.x.x. + +* The usgs2sdf utility was modified John Gabrysch (jgabby@gmail.com) to + properly handle the latest USGS DEM file format, and to properly scale + Alaska tiles. + +---------------------------------------------------------------------------- + Release 1.1.0: -By John A. Magliacane (29-Jan-2004): +By John A. Magliacane, (29-Jan-2004): * Extensively modified by J. D. McDonald in January 2004 to include the Longley-Rice propagation model using C++ code from NTIA/ITS.