165 lines
6.1 KiB
Python
165 lines
6.1 KiB
Python
#
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# Copyright 2010 Nick Foster
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#
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# This file is part of gr-air-modes
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#
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# gr-air-modes is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 3, or (at your option)
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# any later version.
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#
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# gr-air-modes is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with gr-air-modes; see the file COPYING. If not, write to
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# the Free Software Foundation, Inc., 51 Franklin Street,
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# Boston, MA 02110-1301, USA.
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#
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import time, os, sys
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from string import split, join
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import modes_parse
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import math
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class modes_output_print(modes_parse.modes_parse):
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def __init__(self, mypos):
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modes_parse.modes_parse.__init__(self, mypos)
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def parse(self, message):
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[msgtype, shortdata, longdata, parity, ecc, reference, timestamp] = message.split()
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shortdata = long(shortdata, 16)
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longdata = long(longdata, 16)
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parity = long(parity, 16)
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ecc = long(ecc, 16)
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reference = float(reference)
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timestamp = float(timestamp)
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msgtype = int(msgtype)
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output = None;
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if msgtype == 0:
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output = self.print0(shortdata, parity, ecc)
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elif msgtype == 4:
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output = self.print4(shortdata, parity, ecc)
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elif msgtype == 5:
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output = self.print5(shortdata, parity, ecc)
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elif msgtype == 11:
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output = self.print11(shortdata, parity, ecc)
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elif msgtype == 17:
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output = self.print17(shortdata, longdata, parity, ecc)
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else:
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output = "No handler for message type " + str(msgtype) + " from %x" % ecc
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if reference == 0.0:
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refdb = -150.0
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else:
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refdb = 10.0*math.log10(reference)
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if output is not None:
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output = "(%.0f %.10f) " % (refdb, timestamp) + output
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print output
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def print0(self, shortdata, parity, ecc):
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[vs, cc, sl, ri, altitude] = self.parse0(shortdata, parity, ecc)
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retstr = "Type 0 (short A-A surveillance) from " + "%x" % ecc + " at " + str(altitude) + "ft"
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# the ri values below 9 are used for other things. might want to print those someday.
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if ri == 9:
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retstr = retstr + " (speed <75kt)"
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elif ri > 9:
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retstr = retstr + " (speed " + str(75 * (1 << (ri-10))) + "-" + str(75 * (1 << (ri-9))) + "kt)"
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if vs is True:
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retstr = retstr + " (aircraft is on the ground)"
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return retstr
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def print4(self, shortdata, parity, ecc):
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[fs, dr, um, altitude] = self.parse4(shortdata, parity, ecc)
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retstr = "Type 4 (short surveillance altitude reply) from " + "%x" % ecc + " at " + str(altitude) + "ft"
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if fs == 1:
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retstr = retstr + " (aircraft is on the ground)"
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elif fs == 2:
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retstr = retstr + " (AIRBORNE ALERT)"
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elif fs == 3:
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retstr = retstr + " (GROUND ALERT)"
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elif fs == 4:
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retstr = retstr + " (SPI ALERT)"
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elif fs == 5:
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retstr = retstr + " (SPI)"
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return retstr
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def print5(self, shortdata, parity, ecc):
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[fs, dr, um] = self.parse5(shortdata, parity, ecc)
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retstr = "Type 5 (short surveillance ident reply) from " + "%x" % ecc + " with ident " + str(shortdata & 0x1FFF)
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if fs == 1:
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retstr = retstr + " (aircraft is on the ground)"
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elif fs == 2:
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retstr = retstr + " (AIRBORNE ALERT)"
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elif fs == 3:
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retstr = retstr + " (GROUND ALERT)"
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elif fs == 4:
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retstr = retstr + " (SPI ALERT)"
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elif fs == 5:
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retstr = retstr + " (SPI)"
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return retstr
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def print11(self, shortdata, parity, ecc):
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[icao24, interrogator, ca] = self.parse11(shortdata, parity, ecc)
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retstr = "Type 11 (all call reply) from " + "%x" % icao24 + " in reply to interrogator " + str(interrogator)
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return retstr
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def print17(self, shortdata, longdata, parity, ecc):
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icao24 = shortdata & 0xFFFFFF
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subtype = (longdata >> 51) & 0x1F;
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retstr = None
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if subtype == 4:
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msg = self.parseBDS08(shortdata, longdata, parity, ecc)
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retstr = "Type 17 subtype 04 (ident) from " + "%x" % icao24 + " with data " + msg
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elif subtype >= 5 and subtype <= 8:
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[altitude, decoded_lat, decoded_lon, rnge, bearing] = self.parseBDS06(shortdata, longdata, parity, ecc)
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if decoded_lat is not None:
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retstr = "Type 17 subtype 06 (surface report) from " + "%x" % icao24 + " at (" + "%.6f" % decoded_lat + ", " + "%.6f" % decoded_lon + ") (" + "%.2f" % rnge + " @ " + "%.0f" % bearing + ")"
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elif subtype >= 9 and subtype <= 18:
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[altitude, decoded_lat, decoded_lon, rnge, bearing] = self.parseBDS05(shortdata, longdata, parity, ecc)
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if decoded_lat is not None:
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retstr = "Type 17 subtype 05 (position report) from " + "%x" % icao24 + " at (" + "%.6f" % decoded_lat + ", " + "%.6f" % decoded_lon + ") (" + "%.2f" % rnge + " @ " + "%.0f" % bearing + ") at " + str(altitude) + "ft"
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# this is a trigger to capture the bizarre BDS0,5 squitters you keep seeing on the map with latitudes all over the place
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# if icao24 == 0xa1ede9:
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# print "Buggy squitter with shortdata %s longdata %s parity %s ecc %s" % (str(shortdata), str(longdata), str(parity), str(ecc),)
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elif subtype == 19:
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subsubtype = (longdata >> 48) & 0x07
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if subsubtype == 0:
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[velocity, heading, vert_spd] = self.parseBDS09_0(shortdata, longdata, parity, ecc)
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retstr = "Type 17 subtype 09-0 (track report) from " + "%x" % icao24 + " with velocity " + "%.0f" % velocity + "kt heading " + "%.0f" % heading + " VS " + "%.0f" % vert_spd
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elif subsubtype == 1:
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[velocity, heading, vert_spd] = self.parseBDS09_1(shortdata, longdata, parity, ecc)
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retstr = "Type 17 subtype 09-1 (track report) from " + "%x" % icao24 + " with velocity " + "%.0f" % velocity + "kt heading " + "%.0f" % heading + " VS " + "%.0f" % vert_spd
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else:
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retstr = "Type 17 subtype 09-%i" % (subsubtype) + " not implemented"
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else:
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retstr = "Type 17 subtype " + str(subtype) + " not implemented"
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return retstr
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