dk.navicon.AIS
Class ChannelManagement

java.lang.Object
  |
  +--dk.navicon.AIS.AISMessage
        |
        +--dk.navicon.AIS.ChannelManagement

public class ChannelManagement

extends AISMessage

This message shall be transmitted by a base station to command the VHF data link parameters for the geographical area designated in this message. The geographical area designated by this message shall be as defined in section 6.4.1.

Field Summary

int	addressed_or_broadcast 0 = broadcast geographical area message = default; 1 = addressed message (to individual station(s))
int	channel_A Channel number according to Recommendation ITU-R M.1084-3, Annex4.
int	channel_A_bandwidth 0 = default (as specified by channel number); 1 = 12.5 khz bandwidth
int	channel_B Channel number according to Recommendation ITU-R M.1084-3, Annex4.Note: The channel number also defines the channel bandwidth (refer to 6.4.1.3)
int	channel_B_bandwidth 0 = default (as specified by channel number); 1 = 12.5 khz bandwidth
int	latitude_1 Latitude of area to which the assignment applies; upper right corner (north east); in 1/10 minute (90 degrees, North = positive, South = negative)
int	latitude_2 Latitude of area to which the assignment applies; lower left corner (south west); in 1/10 minute (90 degrees, North = positive, South = negative)
int	longitude_1 Longitude of area to which the assignment applies; upper right corner (north east); in 1/10 minute (180 degrees, East = positive, West = negative)
int	longitude_2 Longitude of area to which the assignment applies; lower left corner (south west); in 1/10 minute (180 degrees, East = positive, West = negative)
int	mmsi_nb MMSI number of base station
int	power 0=High (default), 1=Low
int	spare Not used.
int	spare_1 Not used.
int	transitional_zone_size The transitional zone size in nautical miles should be calculated by adding 1 to this parameter value.
int	Tx_Rx_mode 0=Tx1/Tx2, Rx1/Rx2 (default) 1=Tx1, Rx1/Rx2 2 - 15: not used

Fields inherited from class dk.navicon.AIS.AISMessage

msg_id, rep_indi

Constructor Summary

ChannelManagement()

ChannelManagement(java.lang.String s, int fill_bits)

Method Summary

dk.navicon.AIS.MessageDescription[]

getMessageDescription()

Methods inherited from class dk.navicon.AIS.AISMessage

decode, encode

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

mmsi_nb

public int mmsi_nb

MMSI number of base station

spare

public int spare

Not used. Shall be set to zero.

channel_A

public int channel_A

Channel number according to Recommendation ITU-R M.1084-3, Annex4. Note: The channel number also defines the channel bandwidth (refer to 6.4.1.3)

channel_B

public int channel_B

Channel number according to Recommendation ITU-R M.1084-3, Annex4.Note: The channel number also defines the channel bandwidth (refer to 6.4.1.3)

Tx_Rx_mode

public int Tx_Rx_mode

0=Tx1/Tx2, Rx1/Rx2 (default) 1=Tx1, Rx1/Rx2 2 - 15: not used

power

public int power

0=High (default), 1=Low

longitude_1

public int longitude_1

Longitude of area to which the assignment applies; upper right corner (north east); in 1/10 minute (180 degrees, East = positive, West = negative)

latitude_1

public int latitude_1

Latitude of area to which the assignment applies; upper right corner (north east); in 1/10 minute (90 degrees, North = positive, South = negative)

longitude_2

public int longitude_2

Longitude of area to which the assignment applies; lower left corner (south west); in 1/10 minute (180 degrees, East = positive, West = negative)

latitude_2

public int latitude_2

Latitude of area to which the assignment applies; lower left corner (south west); in 1/10 minute (90 degrees, North = positive, South = negative)

addressed_or_broadcast

public int addressed_or_broadcast

0 = broadcast geographical area message = default; 1 = addressed message (to individual station(s))

channel_A_bandwidth

public int channel_A_bandwidth

0 = default (as specified by channel number); 1 = 12.5 khz bandwidth

channel_B_bandwidth

public int channel_B_bandwidth

0 = default (as specified by channel number); 1 = 12.5 khz bandwidth

transitional_zone_size

public int transitional_zone_size

The transitional zone size in nautical miles should be calculated by adding 1 to this parameter value. The default parameter value should be 4, which translate to 5 nautical miles. see ITU-R M.1371-1 4.1.5

spare_1

public int spare_1

Not used. Shall be set to zero.

Constructor Detail

ChannelManagement

public ChannelManagement()

ChannelManagement

public ChannelManagement(java.lang.String s,
                         int fill_bits)
                  throws AISParseException

Method Detail

getMessageDescription

public dk.navicon.AIS.MessageDescription[] getMessageDescription()

Overrides:

getMessageDescription in class AISMessage