def extract_altitude(self, adsb_obj):
alt_string = adsb_obj.ADSB_BINARY_DATA[8:20]
Q = alt_string[7]
new_alt_string = alt_string[0:7] + alt_string[8:]
if Q == '0':
altitude = stuff.binstring_to_int(new_alt_string) * 100 - 1000
else:
altitude = stuff.binstring_to_int(new_alt_string) * 25 - 1000
return altitude
def extended_squitter_strings(self, string):
messages = []
for i in range(len(string) - 14):
if (ord(string[i]) >> 3) == 17:
crc = self.calculate_checksum(string[i:i + 14])
if crc == stuff.binstring_to_int(
stuff.asciistring_to_binstring(string[i + 11:i + 14])):
messages.append(string[i:i + 14])
return messages
def extract_aircraft_identification(self, adsb_obj):
csbin = adsb_obj.ADSB_BINARY_DATA[8:]
cs = ''
cs += self.charset[stuff.binstring_to_int(csbin[0:6])]
cs += self.charset[stuff.binstring_to_int(csbin[6:12])]
cs += self.charset[stuff.binstring_to_int(csbin[12:18])]
cs += self.charset[stuff.binstring_to_int(csbin[18:24])]
cs += self.charset[stuff.binstring_to_int(csbin[24:30])]
cs += self.charset[stuff.binstring_to_int(csbin[30:36])]
cs += self.charset[stuff.binstring_to_int(csbin[36:42])]
cs += self.charset[stuff.binstring_to_int(csbin[42:48])]
chars_to_remove = ['_', '#']
callsign = cs.translate(None, ''.join(chars_to_remove))
# print 'ICAO: ' + str(adsb_obj.ICAO) + ' Callsign: ' + callsign
return (adsb_obj.ICAO, callsign)
def LONGITUDE(self):
return stuff.binstring_to_int(self.ADSB_BINARY_DATA[39:56])
def LATITUDE(self):
return stuff.binstring_to_int(self.ADSB_BINARY_DATA[22:39])
def T(self):
return stuff.binstring_to_int(self.ADSB_BINARY_DATA[20:21])
def F(self):
return stuff.binstring_to_int(self.ADSB_BINARY_DATA[21:22])
def TC(self):
return stuff.binstring_to_int(self.ADSB_BINARY_DATA[0:5])
def PARITY(self):
return stuff.binstring_to_int(self.binstring[88:112])
def ICAO(self):
return stuff.binstring_to_int(self.binstring[8:32])
def CA(self):
return stuff.binstring_to_int(self.binstring[5:8])
def DF(self):
return stuff.binstring_to_int(self.binstring[0:5])