AIS Message Definitions

AIS Message: ChanMngmt (::)

Description:

Base station report - F

Name NumberOfBits ArrayLength Type Units Description
MessageID 6 uint AIS message number. Must be 22
RepeatIndicator 2 uint Indicated how many times a message has been repeated
0: default
3: do not repeat any more
UserID 30 uint Unique ship identification number (MMSI)
Spare 2 uint Not used. Should be set to zero.
ChanA 12 uint Channel number from ITU-R M.1084 Annex 4
ChanB 12 uint Channel number from ITU-R M.1084 Annex 4
TxRxMode 4 uint FIX: find the description
0: Tx A/Tx B, Rx A/RX B
1: Tx A, Rx A/Rx B
2: Tx B, Rx A/Rx B
power 1 uint FIX: put in a description
0: high
1: low
corner1_lon 18 decimal degrees north-east corner of area for assignment longitude of corner
corner1_lat 17 decimal degrees north-east corner of area for assignment latitude of corner
corner2_lon 18 decimal degrees south-west corner of area for assignment longitude of corner
corner2_lat 17 decimal degrees south-west corner of area for assignment latitude of corner
IndicatorType 1 uint FIX: put in a description
0: broadcast
1: addressed
ChanABandwidth 1 uint FIX: put in a description
0: specified by channel number
1: 12.5kHz
ChanBBandwidth 1 uint FIX: put in a description
0: specified by channel number
1: 12.5kHz
TransZoneSize 3 uint nm FIX: put in a description
0: 1
1: 2
2: 3
3: 4
4: 5
5: 6
6: 7
7: 8
Spare 23 uint Not used. Should be set to zero.