UTC of position 2. Latitude, N/S 3. Longitude, E/W 4. GPS quality indicator (see note) 5. Number of satllite in use,00-12, may be different from the number in view 6. Horizontal dilution of precision 7. Antenna altitude above/below mean sealevel, m 8. Geoidal separation, m 9. Age of differential GPS data 10. Differential reference station ID, 0000-1023 11. Checksum NOTE 0 = fix not available or invalid 1 = GPS SPS mode, fix valid 2 = differential GPS, SPS mode, fix valid 3 = GPS PPS mode, fix valid 4 = Real Time Kinetic. Satellite system used in RTK mode with fixed integers 5 = Float RTK. Satellite system used in RTK mode with floating fingers 6 = Estimated (dead reckoning) mode 7 = Manual input mode 8 = Simulator mode The GPS quality indicator shall not be a null field. GLL - Geographic position - latitude and longitude $--GLL,llll.lll,a,yyyyy.yyy,a,hhmmss.ss,A,a*hh | | | | | | | | | | | | | | | +------- 6 | | | | | | +--------- 5 | | | | | +----------- 4 | | | | +---------------- 3 | | +------+----------------------- 2 +---+----------------------------------- 1 1. Latitude, N/S 2. Longitude, E/W 3. UTC of position 4. Status: A=data valid, V=data invalid 5. Mode indicator(see note) 6. Checksum NOTE Positioning system Mode indicator: A = Autonomous D = Differential E = Estimated (dead reckoning) M = Manual input S = Simulator N = Data not valid The Mode indicator field supplements the Status field. The Status field shall be set to V=invalid for all values of Operating Mode except for A=Autonomous and D=Differential. The positioning system Mode indicator and Status field shall not be null fields. A-11 RMA - Recommemded minimum navigation information - Loran C data $--RMA,A,llll.lll,a,yyyyy.yy,a,x.x,x.x,x.x,x.x,x.x,a,a*hh | | | | | | | | | | | | | | | | | | | | | | | | | +------- 10 | | | | | | | | | | | +--------- 9 | | | | | | | | | +---+----------- 8 | | | | | | | | +------------------ 7 | | | | | | | +---------------------- 6 | | | | | | +-------------------------- 5 | | | | | +------------------------------ 4 | | | +----+--------------------------------- 3 | +---+-------------------------------------------- 2 +------------------------------------------------------- 1 1. Status: A=data valid, V=blink, cycle or SNR warning 2. Latitude, degrees N/S 3. Longitude, degrees E/W 4. Time difference A, microseconds 5. Time difference B, microseconds 6. Speed over ground, knots 7. Course over ground, degrees true 8. Magnetic variation(see note 1),degree E/W 9. Mode indicator(see note 2) 10. Checksum NOTE 1 - Easterly variation(E) subtracts from true course Westerly variation(W) adds to true course NOTE 2 Positioning system Mode indicator: A = Autonomous D = Differential E = Estimated (dead reckoning) M = Manual input S = Simulator N = Data not valid The Mode indicator field supplements the Status field. The Status field shall be set to V=invalid for all values of Operating Mode except for A=Autonomous and D=Differential. The positioning system Mode indicator and Status field shall not be null fields. RMC -Recommended minimum specific GPS/TRANSIT data $--RMC,hhmmss.ss,A,llll.lll,a,yyyyy.yyy,a,x.x,x.x,xxxxxx,x.x,a,a*hh | | | | | | | | | | | | | | | | | | | | | | | | | +--- 10 | | | | | | | | | | | +----- 9 | | | | | | | | | +--+------- 8 | | | | | | | | +--------------- 7 | | | | | | | +--------------------- 6 | | | | | | +------------------------- 5 | | | | +---+---------------------------- 4 | | +---+---------------------------------------- 3 | +--------------------------------------------------- 2 +---------------------------------------------------------- 1 1. UTC of position fix 2. Status: A=data valid, V=navigation receiver warning 3. Latitude, N/S 4. Longitude, E/W 5. Speed over ground, knots 6. Course over ground, degrees true 7. Date: dd/mm/yy 8. magnetic variation, degrees E/W 9. Mode indicator(see note) 10. Checksum NOTE Positioning system Mode indicator: A = Autonomous D = Differential E = Estimated (dead reckoning) M = Manual input S = Simulator N = Data not valid The Mode indicator field supplements the Status field. The Status field shall be set to V=invalid for all values of Operating Mode except for A=Autonomous and D=Differential. The positioning system Mode indicator and Status field shall not be null fields. ZDA – Time and date $--ZDA,hhmmss.ss,xx,xx,xxxx,xx,xx*hh | | | | | | | | | | | | | +--------- 7 | | | | | +----------- 6 | | | | +-------------- 5 | | | +------------------ 4 | | +---------------------- 3 | +------------------------- 2 +--------------------------------- 1 1. UTC 2. Day, 01 to 31(UTC) 3. Month, 01 to 12(UTC) 4. Year(UTC) 5. Local zone hours, 00h to +-13h 6. Local zone minutes, 00 to +59 as local hours 7. Checksum This page is intentionally left blank. INDEX A ACK RQ 4-5 Alarm Setup 6-5 All Ships Call 4-9 Auto Acknowlege 2-7 C Calling type 5-1 CH16 1-4 channel mode 1-3 D diagnostic test 8-2 DIST ACK signal 3-6 Distress Alert 3-1 distress alert 3-5...
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