APPENDICES Page
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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
Содержание 1000 R4
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