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Added SBS support for aircraft and flight ID

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Looking at the SBS output, flight ID is just aircraft ID +
100. Aircraft ID is just a unique count to make parsing the output
file easier.

I'm not sure how useful this is but it makes us a step closer towards
mimicking the SBS.

I also pull out the ID for squitters 0, 4, and 5.
This commit is contained in:
Zack Moratto 2011-07-07 11:46:51 -07:00
parent 4220255908
commit f31e9e062f
1 changed files with 39 additions and 12 deletions
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51
src/python/modes_sbs1.py
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@ -33,6 +33,31 @@ class modes_output_sbs1(modes_parse.modes_parse):
self._s.listen(1)
self._s.setblocking(0) #nonblocking
self._conns = [] #list of active connections
self._aircraft_id_map = {} # dictionary of icao24 to aircraft IDs
self._aircraft_id_count = 0 # Current Aircraft ID count
def __del__(self):
self._s.close()
def get_aircraft_id(self, icao24):
if icao24 in self._aircraft_id_map:
return self._aircraft_id_map[icao24]
# Adding this new ID to the dictionary
self._aircraft_id_count += 1
self._aircraft_id_map[icao24] = self._aircraft_id_count
# Checking to see if we need to clean up in the event that the
# dictionary is getting too large.
if len(self._aircraft_id_map) > 1e4:
minimum = ('', self._aircraft_id_count)
for pair in self._aircraft_id_map:
if pair[1] < minimum[1]:
minimum = pair
self._aircraft_id_map.pop(minimum[0])
# Finally return the new pair
return self._aircraft_id_count
def output(self, msg):
sbs1_msg = self.parse(msg)
@ -52,9 +77,6 @@ class modes_output_sbs1(modes_parse.modes_parse):
except socket.error:
pass
def __del__(self):
self._s.close()
def current_time(self):
timenow = datetime.now()
return [timenow.strftime("%Y/%m/%d"), timenow.strftime("%H:%M:%S.000")]
@ -102,7 +124,8 @@ class modes_output_sbs1(modes_parse.modes_parse):
def pp0(self, shortdata, parity, ecc):
[datestr, timestr] = self.current_time()
[vs, cc, sl, ri, altitude] = self.parse0(shortdata, parity, ecc)
retstr = "MSG,7,0,0,0,0,%s,%s,%s,%s,,%s,,,,,,,,,," % (datestr,timestr,datestr,timestr,altitude)
aircraft_id = self.get_aircraft_id(ecc)
retstr = "MSG,7,0,%i,%X,%i,%s,%s,%s,%s,,%s,,,,,,,,,," % (aircraft_id, ecc, aircraft_id+100, datestr, timestr, datestr, timestr, altitude)
if vs:
retstr += "1\n"
else:
@ -112,23 +135,27 @@ class modes_output_sbs1(modes_parse.modes_parse):
def pp4(self, shortdata, parity, ecc):
[datestr, timestr] = self.current_time()
[fs, dr, um, altitude] = self.parse4(shortdata, parity, ecc)
retstr = "MSG,5,0,0,0,0,%s,%s,%s,%s,,%s,,,,,,," % (datestr,timestr,datestr,timestr,altitude)
aircraft_id = self.get_aircraft_id(ecc)
retstr = "MSG,5,0,%i,%X,%i,%s,%s,%s,%s,,%s,,,,,,," % (aircraft_id, ecc, aircraft_id+100, datestr, timestr, datestr, timestr, altitude)
return retstr + self.decode_fs(fs) + "\n"
def pp5(self, shortdata, parity, ecc):
# I'm not sure what to do with the identiifcation shortdata & 0x1FFF
[datestr, timestr] = self.current_time()
[fs, dr, um] = self.parse5(shortdata, parity, ecc)
retstr = "MSG,6,0,0,0,0,%s,%s,%s,%s,,,,,,,,," % (datestr,timestr,datestr,timestr)
aircraft_id = self.get_aircraft_id(ecc)
retstr = "MSG,6,0,%i,%X,%i,%s,%s,%s,%s,,,,,,,,," % (aircraft_id, ecc, aircraft_id+100, datestr, timestr, datestr, timestr)
return retstr + self.decode_fs(fs) + "\n"
def pp11(self, shortdata, parity, ecc):
[datestr, timestr] = self.current_time()
[icao24, interrogator, ca] = self.parse11(shortdata, parity, ecc)
return "MSG,8,0,0,%X,0,%s,%s,%s,%s,,,,,,,,,,,,\n" % (icao24,datestr,timestr,datestr,timestr)
aircraft_id = self.get_aircraft_id(icao24)
return "MSG,8,0,%i,%X,%i,%s,%s,%s,%s,,,,,,,,,,,,\n" % (aircraft_id, icao24, aircraft_id+100, datestr, timestr, datestr, timestr)
def pp17(self, shortdata, longdata, parity, ecc):
icao24 = shortdata & 0xFFFFFF
aircraft_id = self.get_aircraft_id(icao24)
subtype = (longdata >> 51) & 0x1F
retstr = None
@ -139,7 +166,7 @@ class modes_output_sbs1(modes_parse.modes_parse):
if subtype >= 1 and subtype <= 4:
# Aircraft Identification
msg = self.parseBDS08(shortdata, longdata, parity, ecc)
retstr = "MSG,1,0,0,%X,0,%s,%s,%s,%s,%s,,,,,,,,,,,\n" % (icao24, datestr, timestr, datestr, timestr, msg)
retstr = "MSG,1,0,%i,%X,%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
@ -147,7 +174,7 @@ class modes_output_sbs1(modes_parse.modes_parse):
if decoded_lat is None: #no unambiguously valid position available
retstr = None
else:
retstr = "MSG,2,0,0,%X,0,%s,%s,%s,%s,,%i,,,%.5f,%.5f,,,,0,0,0\n" % (icao24, datestr, timestr, datestr, timestr, altitude, decoded_lat, decoded_lon)
retstr = "MSG,2,0,%i,%X,%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:
# Airborne position measurements
@ -158,7 +185,7 @@ class modes_output_sbs1(modes_parse.modes_parse):
if decoded_lat is None: #no unambiguously valid position available
retstr = None
else:
retstr = "MSG,3,0,0,%X,0,%s,%s,%s,%s,,%i,,,%.5f,%.5f,,,,0,0,0\n" % (icao24, datestr, timestr, datestr, timestr, altitude, decoded_lat, decoded_lon)
retstr = "MSG,3,0,%i,%X,%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 == 19:
# Airborne velocity measurements
@ -166,10 +193,10 @@ class modes_output_sbs1(modes_parse.modes_parse):
subsubtype = (longdata >> 48) & 0x07
if subsubtype == 0:
[velocity, heading, vert_spd] = self.parseBDS09_0(shortdata, longdata, parity, ecc)
retstr = "MSG,4,0,0,%X,0,%s,%s,%s,%s,,,%.1f,%.1f,,,%i,,,,,\n" % (icao24, datestr, timestr, datestr, timestr, velocity, heading, vert_spd)
retstr = "MSG,4,0,%i,%X,%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, parity, ecc)
retstr = "MSG,4,0,0,%X,0,%s,%s,%s,%s,,,%.1f,%.1f,,,%i,,,,,\n" % (icao24, datestr, timestr, datestr, timestr, velocity, heading, vert_spd)
retstr = "MSG,4,0,%i,%X,%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