Uncertainty and Accuracy parameters

This commit is contained in:
JoseAndresMR 2018-06-22 12:31:19 +02:00
parent 54b2038a41
commit 457a948879
2 changed files with 314 additions and 2 deletions

View File

@ -222,3 +222,269 @@ def oe_flag(msg):
"""
msgbin = common.hex2bin(msg)
return int(msgbin[53])
# Uncertainty & accuracy
def nic_v1(msg,nic_sup_b):
"""Calculate NIC, navigation integrity category
Args:
msg (string): 28 bytes hexadecimal message string, nic_sup_b (int): NIC supplement
Returns:
int: NIC number (from 0 to 11), -1 if not applicable
"""
if typecode(msg) < 5 or typecode(msg) > 22:
raise RuntimeError("%s: Not a surface position message (5<TC<8, )airborne position message (8<TC<19), airborne position with GNSS height (20<TC<22)" % msg)
tc = typecode(msg)
if tc in [0, 8, 18, 22]:
nic = 0
elif tc == 17:
nic = 1
elif tc == 16:
if nic_sup_b:
nic = 3
else:
nic = 2
elif tc == 15:
nic = 4
elif tc == 14:
nic = 5
elif tc == 13:
if nic_sup_b:
nic = 6
else:
nic = 6
elif tc == 12:
nic = 7
elif tc == 11:
if nic_sup_b:
nic = 9
else:
nic = 8
elif tc in [6, 10, 21]:
nic = 10
elif tc in [5, 9, 20]:
nic = 11
elif tc == 7:
if nic_sup_b:
nic = 9
else:
nic = 8
else:
nic = -1
return nic
def nic_v2(msg,nic_a,nic_b,nic_c):
"""Calculate NIC, navigation integrity category
Args:
msg (string): 28 bytes hexadecimal message string, nic_a (int): NIC supplement, nic_b (int): NIC supplement, nic_c (int): NIC supplement
Returns:
int: NIC number (from 0 to 11), -1 if not applicable
"""
if typecode(msg) < 5 or typecode(msg) > 22:
raise RuntimeError("%s: Not a surface position message (5<TC<8, )airborne position message (8<TC<19), airborne position with GNSS height (20<TC<22)" % msg)
tc = typecode(msg)
if tc in [0, 18, 22]:
nic = 0
elif tc == 17:
nic = 1
elif tc == 16:
if nic_a:
nic = 3
else:
nic = 2
elif tc == 15:
nic = 4
elif tc == 14:
nic = 5
elif tc == 13:
if nic_a:
nic = 6
else:
if nic_b:
nic = 6
else:
nic = 6
elif tc == 12:
nic = 7
elif tc == 11:
if nic_a:
nic = 9
else:
nic = 8
elif tc in [6, 10, 21]:
nic = 10
elif tc in [5, 9, 20]:
nic = 11
elif tc == 8:
if nic_a:
if nic_c:
nic = 7
else:
nic = 6
else:
if nic_c:
nic = 6
else:
nic = 0
elif tc == 7:
if nic_a:
nic = 9
else:
nic = 8
else:
nic = -1
return nic
def nic_s(msg):
"""Calculate NICs, navigation integrity category supplement
Args:
msg (string): 28 bytes hexadecimal message string
Returns:
int: NIC number (from 0 to 11), -1 if not applicable
"""
if typecode(msg) != 31:
raise RuntimeError("%s: Not a status operation message, expecting TC = 31" % msg)
msgbin = common.hex2bin(msg)
nic_s = common.bin2int(msgbin[75])
return nic_s
def nic_a_and_c(msg):
"""Calculate NICa and NICc, navigation integrity category supplements
Args:
msg (string): 28 bytes hexadecimal message string
Returns:
int: NIC number (from 0 to 11), -1 if not applicable
"""
if typecode(msg) != 31:
raise RuntimeError("%s: Not a status operation message, expecting TC = 31" % msg)
msgbin = common.hex2bin(msg)
nic_a = common.bin2int(msgbin[75])
nic_c = common.bin2int(msgbin[51])
return nic_a, nic_c
def nic_b(msg):
"""Calculate NICb, navigation integrity category supplement
Args:
msg (string): 28 bytes hexadecimal message string
Returns:
int: NIC number (from 0 to 11), -1 if not applicable
"""
if typecode(msg) < 9 or typecode(msg) > 18:
raise RuntimeError("%s: Not a airborne position message, expecting 8<TC<19" % msg)
msgbin = common.hex2bin(msg)
nic_b = common.bin2int(msgbin[39])
return nic_b
def nac_p(msg):
"""Calculate NACp, Navigation Accuracy Category - Position
Args:
msg (string): 28 bytes hexadecimal message string, TC = 29 or 31
Returns:
int: NACp number (from 0 to 11), -1 if not applicable
"""
if typecode(msg) not in [29,31]:
raise RuntimeError("%s: Not a target state and status message neither operation status message, expecting TC = 29 or 31" % msg)
msgbin = common.hex2bin(msg)
tc = typecode(msg)
if tc == 29:
nac_p = common.bin2int(msgbin[71:75])
elif tc == 31:
nac_p = common.bin2int(msgbin[76:80])
else:
nac_p = -1
return nac_p
def nac_v(msg):
"""Calculate NACv, Navigation Accuracy Category - Velocity
Args:
msg (string): 28 bytes hexadecimal message string, TC = 19
Returns:
int: NACv number (from 0 to 4), -1 if not applicable
"""
if typecode(msg) != 19:
raise RuntimeError("%s: Not an airborne velocity message, expecting TC = 19" % msg)
msgbin = common.hex2bin(msg)
tc = typecode(msg)
if tc == 19:
nac_v = common.bin2int(msgbin[42:45])
else:
nac_v = -1
return nac_v
def sil(msg,version):
"""Calculate SIL, Surveillance Integrity Level
Args:
msg (string): 28 bytes hexadecimal message string with TC = 29, 31
Returns:
int: sil number, -1 if not applicable
"""
if typecode(msg) not in [29,31]:
raise RuntimeError("%s: Not a target state and status message neither operation status message, expecting TC = 29 or 31" % msg)
msgbin = common.hex2bin(msg)
tc = typecode(msg)
if tc == 29:
sil = common.bin2int(msgbin[76:78])
elif tc == 31:
sil = common.bin2int(msg[82:84])
else:
sil = -1
if version == 2:
if typecode(msg) == 29:
sils = common.bin2int(msgbin[39])
elif typecode(msg) == 31:
sils = common.bin2int(msgbin[86])
else:
sils = -1
return sil, sils
def version(msg):
"""ADS-B Version
Args:
msg (string): 28 bytes hexadecimal message string, TC = 31
Returns:
int: version number
"""
msgbin = common.hex2bin(msg)
if typecode(msg) not in [29,31]:
raise RuntimeError("%s: Not a target state and status message neither operation status message, expecting TC = 29 or 31" % msg)
if typecode(msg) in [29,31]:
version = common.bin2int(msgbin[72:75])
else:
version = -1
return version

View File

@ -46,6 +46,11 @@ class Stream():
'ias': None,
'mach': None,
'hdg': None,
'adsb_version' : None,
'nic_s' : None,
'nic_a' : None,
'nic_b' : None,
'nic_c' : None
}
self.acs[icao]['t'] = t
@ -101,7 +106,48 @@ class Stream():
self.acs[icao]['lat'] = latlon[0]
self.acs[icao]['lon'] = latlon[1]
self.acs[icao]['alt'] = adsb.altitude(msg)
local_updated_acs_buffer.append(icao)
local_updated_acs_buffer.append(icao)acs[icao]['adsb_version']
# Uncertainty & accuracy
if (5 <= tc <= 8):
if self.acs[icao]['adsb_version'] == 1:
if self.acs[icao]['nic_s'] != None:
self.nic = adsb.nic_v1(msg,self.acs[icao]['nic_s'])
elif self.acs[icao]['adsb_version'] == 2:
if self.acs[icao]['nic_a'] != None and self.acs[icao]['nic_b'] != None:
self.nic = adsb.nic_v2(msg,self.nic_a,self.acs[icao]['nic_b'],self.acs[icao]['nic_c'])
if (9 <= tc <= 18):
if self.acs[icao]['adsb_version'] == 1:
if self.acs[icao]['nic_s'] != None:
self.nic = adsb.nic_v1(msg,self.acs[icao]['nic_s'])
elif self.acs[icao]['adsb_version'] == 2:
self.acs[icao]['nic_b'] = adsb.nic_b(msg)
if self.acs[icao]['nic_a'] != None and self.acs[icao]['nic_b'] != None:
self.nic = adsb.nic_v2(msg,self.acs[icao]['nic_a'],self.nic_b,self.acs[icao]['nic_c'])
if tc == 19:
self.acs[icao]['nac_v'] = adsb.nac_v(msg)
if (20 <= tc <= 22):
if self.acs[icao]['adsb_version'] == 1:
if self.acs[icao]['nic_s'] != None:
self.nic = adsb.nic_v1(msg,self.acs[icao]['nic_s'])
elif self.acs[icao]['adsb_version'] == 2:
if self.acs[icao]['nic_a'] != None and self.acs[icao]['nic_b'] != None:
self.nic = adsb.nic_v2(msg,self.acs[icao]['nic_a'],self.acs[icao]['nic_b'],self.acs[icao]['nic_c'])
if tc == 29:
if self.acs[icao]['adsb_version'] != None:
self.acs[icao]['sil'] = adsb.sil(msg,self.acs[icao]['adsb_version'])
self.acs[icao]['nac_p'] = adsb.nac_p(msg)
if tc == 31:
self.acs[icao]['adsb_version'] = adsb.version(msg)
self.acs[icao]['sil'] = adsb.version(msg)
self.acs[icao]['nac_p'] = adsb.nac_p(msg)
if self.acs[icao]['adsb_version'] == 1:
self.acs[icao]['nic_s'] = adsb.nic_s(msg)
elif self.acs[icao]['adsb_version'] == 2:
self.acs[icao]['nic_a'] , self.acs[icao]['nic_c'] = adsb.nic_a_and_c(msg)
# process ehs message
for t, msg in zip(ehs_ts, ehs_msgs):