def decode(bv, validate=False):
'''Unpack a bsreport message
Fields in params:
- MessageID(uint): AIS message number. Must be 4 (field automatically set to "4")
- RepeatIndicator(uint): Indicated how many times a message has been repeated
- UserID(uint): Unique ship identification number (MMSI)
- Time_year(uint): Current time stamp year 1-9999
- Time_month(uint): Current time stamp month 1..12
- Time_day(uint): Current time stamp day of the month 1..31
- Time_hour(uint): Current time stamp UTC hours 0..23
- Time_min(uint): Current time stamp minutes
- Time_sec(uint): Current time stamp seconds
- PositionAccuracy(uint): Accuracy of positioning fixes
- Position_longitude(decimal): Location of base station East West location
- Position_latitude(decimal): Location of base station North South location
- fixtype(uint): Method used for positioning
- Spare(uint): Not used. Should be set to zero. (field automatically set to "0")
- RAIM(bool): Receiver autonomous integrity monitoring flag
- state_syncstate(uint): Communications State - SOTDMA Sycronization state
- state_slottimeout(uint): Communications State - SOTDMA Frames remaining until a new slot is selected
- state_slotoffset(uint): Communications State - SOTDMA In what slot will the next transmission occur. BROKEN
@type bv: BitVector
@param bv: Bits defining a message
@param validate: Set to true to cause checking to occur. Runs slower. FIX: not implemented.
@rtype: dict
@return: params
'''
#Would be nice to check the bit count here..
#if validate:
# assert (len(bv)==FIX: SOME NUMBER)
r = {}
r['MessageID']=4
r['RepeatIndicator']=int(bv[6:8])
r['UserID']=int(bv[8:38])
r['Time_year']=int(bv[38:52])
r['Time_month']=int(bv[52:56])
r['Time_day']=int(bv[56:61])
r['Time_hour']=int(bv[61:66])
r['Time_min']=int(bv[66:72])
r['Time_sec']=int(bv[72:78])
r['PositionAccuracy']=int(bv[78:79])
r['Position_longitude']=Decimal(binary.signedIntFromBV(bv[79:107]))/Decimal('600000')
r['Position_latitude']=Decimal(binary.signedIntFromBV(bv[107:134]))/Decimal('600000')
r['fixtype']=int(bv[134:138])
r['Spare']=0
r['RAIM']=bool(int(bv[148:149]))
r.update(commstate.sotdma_parse_bits(bv[-19:]))
#r['commstate'] = commstate.sotdma_parse_bits(bv[-19:])
#r['state_syncstate']=int(bv[149:151])
#r['state_slottimeout']=int(bv[151:154])
#r['state_slotoffset']=int(bv[154:168])
return r
def decode(bv, validate=False):
"""Unpack a bsreport message.
Fields in params:
- MessageID(uint): AIS message number. Must be 4 (field automatically set to "4")
- RepeatIndicator(uint): Indicated how many times a message has been repeated
- UserID(uint): Unique ship identification number (MMSI)
- Time_year(uint): Current time stamp year 1-9999
- Time_month(uint): Current time stamp month 1..12
- Time_day(uint): Current time stamp day of the month 1..31
- Time_hour(uint): Current time stamp UTC hours 0..23
- Time_min(uint): Current time stamp minutes
- Time_sec(uint): Current time stamp seconds
- PositionAccuracy(uint): Accuracy of positioning fixes
- Position_longitude(decimal): Location of base station East West location
- Position_latitude(decimal): Location of base station North South location
- fixtype(uint): Method used for positioning
- Spare(uint): Not used. Should be set to zero. (field automatically set to "0")
- RAIM(bool): Receiver autonomous integrity monitoring flag
- state_syncstate(uint): Communications State - SOTDMA Sycronization state
- state_slottimeout(uint): Communications State - SOTDMA Frames remaining until a new slot is selected
- state_slotoffset(uint): Communications State - SOTDMA In what slot will the next transmission occur. BROKEN
@type bv: BitVector
@param bv: Bits defining a message
@param validate: Set to true to cause checking to occur. Runs slower. FIX: not implemented.
@rtype: dict
@return: params
"""
r = {}
r['MessageID'] = 4
r['RepeatIndicator'] = int(bv[6:8])
r['UserID'] = int(bv[8:38])
r['Time_year'] = int(bv[38:52])
r['Time_month'] = int(bv[52:56])
r['Time_day'] = int(bv[56:61])
r['Time_hour'] = int(bv[61:66])
r['Time_min'] = int(bv[66:72])
r['Time_sec'] = int(bv[72:78])
r['PositionAccuracy'] = int(bv[78:79])
r['Position_longitude'] = Decimal(binary.signedIntFromBV(
bv[79:107])) / Decimal('600000')
r['Position_latitude'] = Decimal(binary.signedIntFromBV(
bv[107:134])) / Decimal('600000')
r['fixtype'] = int(bv[134:138])
r['Spare'] = 0
r['RAIM'] = bool(int(bv[148:149]))
r.update(commstate.sotdma_parse_bits(bv[-19:]))
return r
def decode(bv, validate=False):
r = {}
r['MessageID']=int(bv[:6])
r['RepeatIndicator']=int(bv[6:8])
r['UserID']=int(bv[8:38])
r['NavigationStatus']=int(bv[38:42])
r['ROT']=binary.signedIntFromBV(bv[42:50])
r['SOG']=Decimal(int(bv[50:60]))/Decimal('10')
r['PositionAccuracy']=int(bv[60:61])
r['longitude']=Decimal(binary.signedIntFromBV(bv[61:89]))/Decimal('600000')
r['latitude']=Decimal(binary.signedIntFromBV(bv[89:116]))/Decimal('600000')
r['COG']=Decimal(int(bv[116:128]))/Decimal('10')
r['TrueHeading']=int(bv[128:137])
r['TimeStamp']=int(bv[137:143])
r['RegionalReserved']=0
r['Spare']=0
r['RAIM']=bool(int(bv[148:149]))
r.update(commstate.sotdma_parse_bits(bv[-19:]))
return r
def decode(bv, validate=False):
r = {}
r['MessageID']=int(bv[:6])
r['RepeatIndicator']=int(bv[6:8])
r['UserID']=int(bv[8:38])
r['NavigationStatus']=int(bv[38:42])
r['ROT']=binary.signedIntFromBV(bv[42:50])
r['SOG']=Decimal(int(bv[50:60]))/Decimal('10')
r['PositionAccuracy']=int(bv[60:61])
r['longitude']=Decimal(binary.signedIntFromBV(bv[61:89]))/Decimal('600000')
r['latitude']=Decimal(binary.signedIntFromBV(bv[89:116]))/Decimal('600000')
r['COG']=Decimal(int(bv[116:128]))/Decimal('10')
r['TrueHeading']=int(bv[128:137])
r['TimeStamp']=int(bv[137:143])
r['RegionalReserved']=0
r['Spare']=0
r['RAIM']=bool(int(bv[148:149]))
r.update(commstate.sotdma_parse_bits(bv[-19:]))
return r