FGFS-4.1/gr-air-modes
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New parser works. TCAS untested. Extra info in print. Fixed ground_track printing error. Surface reports suppressed due to possible CPR bug. Not all code paths tested.

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This commit is contained in:
Nick Foster
2012-06-26 23:27:58 -07:00
parent b05bea9618
commit 28824cb0b2
6 changed files with 68 additions and 87 deletions
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45
python/modes_sbs1.py
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@@ -103,25 +103,23 @@ class modes_output_sbs1(modes_parse.modes_parse):
def parse(self, message):
#assembles a SBS-1-style output string from the received message
[msgtype, shortdata, longdata, parity, ecc, reference, timestamp] = message.split()
[data, ecc, reference, timestamp] = message.split()
shortdata = long(shortdata, 16)
longdata = long(longdata, 16)
parity = long(parity, 16)
data = modes_parse.modes_reply(long(data, 16))
ecc = long(ecc, 16)
msgtype = int(msgtype)
msgtype = data["df"]
outmsg = None
if msgtype == 0:
outmsg = self.pp0(shortdata, ecc)
outmsg = self.pp0(data, ecc)
elif msgtype == 4:
outmsg = self.pp4(shortdata, ecc)
outmsg = self.pp4(data, ecc)
elif msgtype == 5:
outmsg = self.pp5(shortdata, ecc)
outmsg = self.pp5(data, ecc)
elif msgtype == 11:
outmsg = self.pp11(shortdata, ecc)
outmsg = self.pp11(data, ecc)
elif msgtype == 17:
outmsg = self.pp17(shortdata, longdata)
outmsg = self.pp17(data)
else:
raise NoHandlerError(msgtype)
return outmsg
@@ -147,7 +145,7 @@ class modes_output_sbs1(modes_parse.modes_parse):
def pp5(self, shortdata, ecc):
# I'm not sure what to do with the identiifcation shortdata & 0x1FFF
[datestr, timestr] = self.current_time()
[fs, dr, um] = self.parse5(shortdata)
[fs, dr, um, ident] = self.parse5(shortdata)
aircraft_id = self.get_aircraft_id(ecc)
retstr = "MSG,6,0,%i,%06X,%i,%s,%s,%s,%s,,,,,,,,," % (aircraft_id, ecc, aircraft_id+100, datestr, timestr, datestr, timestr)
return retstr + self.decode_fs(fs) + "\n"
@@ -158,10 +156,10 @@ class modes_output_sbs1(modes_parse.modes_parse):
aircraft_id = self.get_aircraft_id(icao24)
return "MSG,8,0,%i,%06X,%i,%s,%s,%s,%s,,,,,,,,,,,,\n" % (aircraft_id, icao24, aircraft_id+100, datestr, timestr, datestr, timestr)
def pp17(self, shortdata, longdata):
icao24 = shortdata & 0xFFFFFF
def pp17(self, data):
icao24 = data["aa"]
aircraft_id = self.get_aircraft_id(icao24)
subtype = (longdata >> 51) & 0x1F
subtype = data["me"]["ftc"]
retstr = None
#we'll get better timestamps later, hopefully with actual VRT time
@@ -170,23 +168,22 @@ class modes_output_sbs1(modes_parse.modes_parse):
if subtype >= 1 and subtype <= 4:
# Aircraft Identification
(msg, typestring) = self.parseBDS08(shortdata, longdata)
(msg, typestring) = self.parseBDS08(data)
retstr = "MSG,1,0,%i,%06X,%i,%s,%s,%s,%s,%s,,,,,,,,,,,\n" % (aircraft_id, icao24, aircraft_id+100, datestr, timestr, datestr, timestr, msg)
elif subtype >= 5 and subtype <= 8:
# Surface position measurement
[altitude, decoded_lat, decoded_lon, rnge, bearing] = self.parseBDS06(shortdata, longdata)
[ground_track, decoded_lat, decoded_lon, rnge, bearing] = self.parseBDS06(data)
altitude = 0
if decoded_lat is None: #no unambiguously valid position available
retstr = None
else:
retstr = "MSG,2,0,%i,%06X,%i,%s,%s,%s,%s,,%i,,,%.5f,%.5f,,,,0,0,0\n" % (aircraft_id, icao24, aircraft_id+100, datestr, timestr, datestr, timestr, altitude, decoded_lat, decoded_lon)
elif subtype >= 9 and subtype <= 18 and subtype != 15:
elif subtype >= 9 and subtype <= 18:
# Airborne position measurements
# WRONG (rnge, bearing), is this still true?
# i'm eliminating type 15 records because they don't appear to be
# valid position reports.
[altitude, decoded_lat, decoded_lon, rnge, bearing] = self.parseBDS05(shortdata, longdata)
[altitude, decoded_lat, decoded_lon, rnge, bearing] = self.parseBDS05(data)
if decoded_lat is None: #no unambiguously valid position available
retstr = None
else:
@@ -195,13 +192,13 @@ class modes_output_sbs1(modes_parse.modes_parse):
elif subtype == 19:
# Airborne velocity measurements
# WRONG (heading, vert_spd), Is this still true?
subsubtype = (longdata >> 48) & 0x07
subsubtype = data["me"]["bds09"]["sub"]
if subsubtype == 0:
[velocity, heading, vert_spd] = self.parseBDS09_0(shortdata, longdata)
[velocity, heading, vert_spd] = self.parseBDS09_0(data)
retstr = "MSG,4,0,%i,%06X,%i,%s,%s,%s,%s,,,%.1f,%.1f,,,%i,,,,,\n" % (aircraft_id, icao24, aircraft_id+100, datestr, timestr, datestr, timestr, velocity, heading, vert_spd)
elif subsubtype == 1:
[velocity, heading, vert_spd] = self.parseBDS09_1(shortdata, longdata)
elif 1 <= subsubtype <= 2:
[velocity, heading, vert_spd] = self.parseBDS09_1(data)
retstr = "MSG,4,0,%i,%06X,%i,%s,%s,%s,%s,,,%.1f,%.1f,,,%i,,,,,\n" % (aircraft_id, icao24, aircraft_id+100, datestr, timestr, datestr, timestr, velocity, heading, vert_spd)
return retstr