NavCom Sapphire Rev.J - Manual (Page 308)

Sapphire Technical Reference Manual Rev. J
308
The output format for this message is described in Table 147.
Table 147: GGA Message Output Format
Output
Format:
$GPGGA,time,lat,N/S,lon,E/W,quality,used,hdop,alt,M,separation,M,age,id*checksum
Field# Field Name Description
F1 time
UTC time for position fix in hours, minutes, seconds (hhmmss.ss)
(000000.00 to 235959.99)
F2 Lat
NMEAGGA: Latitude in decimal degrees and minutes (ddmm.mmmm)
(0000.0000 to 8959.9999)
High precision: (ddmm.mmmmmm) (0 to 8959.999999)
F3 N/S Direction of latitude (N=north, S=south)
F4 Lon
NMEAGGA: Longitude in decimal degrees and minutes (dddmm.mmmm)
(00000.0000 to 17959.9999)
High precision: (dddmm.mmmmmm) (0 to 17959.999999)
F5 E/W Direction of longitude (E=east, W=west)
F6 quality
Quality of the position fix (0 to 8)
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 Kinematic, fixed integers
5 = Float RTK, floating integers
6 = estimated (dead reckoning) Mode
7 = Manual input mode
8 = Simulation mode
F7 used Number of used satellites in the position fix, 00-12
F8 hdop Horizontal Dilution of Precision, 1 (ideal) to >20 (poor)
F9 Alt
Altitude above mean sea level (geoidal height) in meters, a theoretical
value that for practical purposes can range from -50 or so for low places
on Earth, to very large positive values for the heights. NMEAGGA: mm.m,
High precision: mm.mmm
F10 M Units for altitude (M=meters)
F11 separation
Geoidal Separation: the difference between the WGS-84 earth ellipsoid
surface and mean-sea-level (geoid) surface, "-" = mean-sea-level surface
below WGS-84 ellipsoid surface.
Note: If no geoid is loaded, geoidal separation is reported as 0.
F12 M Units for geoidal separation (M=meters)
F13 age Time since last dGPS data was received, in seconds
F14 Id
Reference station ID number (0000 – 1023). In RTG mode this is the
StarFire satellite ID.
F15 *CRC Checksum