From: Johnathan Corgan <jcorgan@corganenterprises.com>
Date: Sat, 3 Oct 2009 22:11:30 +0000 (-0700)
Subject: Added timing adjustment for zero crossings at bit edges
X-Git-Url: https://git.gag.com/?a=commitdiff_plain;h=f6e6c0b7138e9b8749b6a3b8bd01d5eeabb69947;p=debian%2Fgnuradio

Added timing adjustment for zero crossings at bit edges
---

diff --git a/gr-noaa/lib/noaa_hrpt_sync_fb.cc b/gr-noaa/lib/noaa_hrpt_sync_fb.cc
index f99947f8..9c655b0d 100644
--- a/gr-noaa/lib/noaa_hrpt_sync_fb.cc
+++ b/gr-noaa/lib/noaa_hrpt_sync_fb.cc
@@ -67,11 +67,16 @@ noaa_hrpt_sync_fb::general_work(int noutput_items,
 
     // Train on zero crossings in center region of symbol
     if (sign != d_last_sign) {
-      if (d_phase > 0.25 && d_phase < 0.75) {
-	float phase_err = d_phase-0.5;
-	d_phase -= phase_err*d_alpha;        // 1st order phase adjustment
-	d_freq -= phase_err*d_beta;          // 2nd order frequency adjustment
-      }
+      float phase_err = 0.0;
+      if (d_phase > 0.25 && d_phase < 0.75)
+	phase_err = d_phase-0.5;
+      else if (d_phase >= 0.75)
+	phase_err = d_phase - 1.0;
+      else
+	phase_err = d_phase;
+
+      d_phase -= phase_err*d_alpha;        // 1st order phase adjustment
+      d_freq -= phase_err*d_beta;          // 2nd order frequency adjustment
 
       d_last_sign = sign;
     }