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Improve SBS parser with better error handling and debug output

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- Add try/except for value conversion
- Add position debug output
- Fix MSG,5 to extract callsign and altitude

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
This commit is contained in:
James Smith
2025-12-22 13:02:21 +00:00
parent 249efbb41e
commit d62f4153bf
1 changed files with 34 additions and 13 deletions
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intercept.py
+34 -13
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@@ -12103,29 +12103,50 @@ def parse_sbs_stream(service_addr):
if callsign:
aircraft['callsign'] = callsign
# MSG,3: position (alt, speed, heading, lat, lon)
# MSG,3: position (alt, lat, lon)
elif msg_type == '3' and len(parts) > 15:
if parts[11]:
aircraft['altitude'] = int(float(parts[11]))
if parts[12]:
aircraft['speed'] = int(float(parts[12]))
if parts[13]:
aircraft['heading'] = int(float(parts[13]))
try:
aircraft['altitude'] = int(float(parts[11]))
except:
pass
if parts[14] and parts[15]:
aircraft['lat'] = float(parts[14])
aircraft['lon'] = float(parts[15])
try:
lat = float(parts[14])
lon = float(parts[15])
aircraft['lat'] = lat
aircraft['lon'] = lon
print(f"[ADS-B] Position: {icao} at {lat:.4f}, {lon:.4f}")
except:
pass
# MSG,4: velocity (speed, heading)
elif msg_type == '4' and len(parts) > 13:
if parts[12]:
aircraft['speed'] = int(float(parts[12]))
try:
aircraft['speed'] = int(float(parts[12]))
except:
pass
if parts[13]:
aircraft['heading'] = int(float(parts[13]))
try:
aircraft['heading'] = int(float(parts[13]))
except:
pass
# MSG,5/6: altitude and squawk
elif msg_type in ('5', '6') and len(parts) > 17:
# MSG,5: callsign and altitude
elif msg_type == '5' and len(parts) > 11:
if parts[10]:
callsign = parts[10].strip()
if callsign:
aircraft['callsign'] = callsign
if parts[11]:
aircraft['altitude'] = int(float(parts[11]))
try:
aircraft['altitude'] = int(float(parts[11]))
except:
pass
# MSG,6: squawk
elif msg_type == '6' and len(parts) > 17:
if parts[17]:
aircraft['squawk'] = parts[17]