Reference Information
LD900 Installation and Oper ations M anual
75
TRINAV Version 4 Sentence Structure & Example
[WGPOS,4,1,OEM7VERI,APEX5,OM7MR0702AN0006,1041,396729.00,0.0,57 12.08195N,002
11.53806W,113.340,0.7,0.9,,0.285460,0.009316,0.156003,0.663714,1.33,3,2,G,R,1,0,0,0,1,M3,IOR,25E,AOR
W,18,2,G01,G03,G08,G10,G11,G14,G17,G18,G22,G28,G32,R02,R03,R09,R11,R17,R18,R19,777,706,]
TRINAV Version 4 Sentence Defined
Content
Format
Unit Notes
Start Character
A6
[-]
$WGPOS
Format Version
I
[-]
= 4 for this version
Nav. Point No.
I
[-]
See comment 2
System
A
[-]
Application name and version, space separated e.g. Quantum 3.0.0.0
Service Level
A
[-]
Highest enabled service permitted e.g. APEX 5
Version
A
[-]
Firmware Version as reported by the GNSS card e.g. OEM060700SN0062
GPS Week Number
I
[-]
GPS Week no. since August 21 1999
GPS Time of Fix
F10.2
[s]
Seconds into GPS week (GPS Time).
Age of Fix
F4.1
[s]
This field indicates the age of the solution as reported by the GNSS card,
based on the time between receiving measurements and generating output.
Latitude
A13
[dm] dd mm.mmmmmN, space between D and M
Longitude
A14
[dm] ddd mm.mmmmmE, space between D and M
Height
F7.3
[m]
Antenna height above ellipsoid. See comment 3
HDOP
F5.1
[-]
Horizontal Dilution of Position
VDOP
F5.1
[-]
Vertical Dilution of Position
Unit Variance
F9.3
[m2] See comment 4
Variance Latitude
F10.6
[m2] See comment 4
Covariance Lat/Long
F10.6
[m2] See comment 4
Variance Longitude
F10.6
[m2] See comment 4
Variance Height
F10.6
[m2] See comment 4
External Reliability
F7.2
[m]
See comment 5
Fix Status
I
[-]
See comment 6
Constellations in Fix (c)
I
[-]
Number of Constellations used in the computation
Identifiers of Constellations A*c
[-]
Constellation character based on RINEX format (G -GPS, R-GLONASS, E-
Galileo, C-BeiDou, J-QZSS)
GNSS Frequency
I
[-]
Number of GNSS frequencies used in the computation (i.e. Single frequency,
Dual frequency, Triple frequency)
PPP-AR
I
[-]
Phases biases used or not to perform Ambiguity Resolution. Value of 1
indicates a PPP-AR solution, 0 it is not.
Atmospheric Corrections
I
[-]
Use of external Atmospheric Corrections in computation Value of 1 shows it
has Atmospheric correction
applied, 0 it is hasn’t.
GNSS
Integrity/Authentication
Message
I
[-]
External information used as an integrity check on GNSS broadcast data.
Value of 1 shows it has been used, 0 it is hasn’t.
Correction Type
I
[-]
See comment 7
Correction Source (s)
A2
[-]
See comment 8
Names of Correction Links
A*s
[-]
Link names providing corrections. Separated by commas
