C-Nav 1000 R4, Installation Manual

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APPENDICES Page 43
APPENDIX A.2– INTERPRETATION OF IEC 61162-1 SENTENCES
Output Sentences, GPS
All output sentences use GP as talker identifier.
DTM - Datum Reference
$--DTM,ccc,a,x.x,a,x.x,a,x.x,ccc
Field Format Name Comment
1 --DTM Sentence Id
2 ccc Local datum Always W84
3 a Local datum subdivision code Null field
4 x.x
5 a
Lat offset, min Always zero
6 x.x
7 a
Lon offset, min Always zero
8 x.x Altitude offset Always zero
8 ccc Reference datum Always W84
GBS - GNSS Satellite Fault Detection
$--GBS,hhmmss.ss,x.x,x.x,x.x,xx,x.x,x.x,x.x
Field Format Name Comment
1 --GBS Sentence Id
2
hhmmss.
ss
UTC time of GGA or GNS
3 x.x Expected error in latitude
4 x.x Expected error in longitude
5 x.x Expected error in altitude
6 xx ID number of most likely
failed satellite
7 x.x
Probability of missed
detection for most likely
failed satellite
8 x.x Estimate of bias
9 x.x Standard deviation of bias
estimate
GGA - Global Positioning System Fix Data
$--GGA,hhmmss.ss,llll.ll,a,yyyy.yy,a,x,xx,x.x,x.x,M,x.x,M,x.x,xxxx
Field Format Name Comment
1 --GGA Sentence Id
2
hhmmss.
ss
UTC of position
3 llll.ll
4 a
Latitude
5 yyyy.yy
6 a
Longitude
7 x GPS quality indicator
8 xx Satellites in use
9 x.x
Horizontal dilution of
precision
10 x.x Antenna altitude
11 M
Units of antenna altitude,
meter
12 x.x Geodial separation
13 M Units of geodial sep.
14 x.x Age of differential GPS data
15 xxxx
Differential reference
station ID