NVR-3000 OPERATION MANUAL & INSTALLATION MANUAL
NVR-3000 OM.E 20210412-02
90
GGA -Global positioning system (GPS) fix data
$--GGA,hhmmss.ss,llll.lll,a,yyyyy.yyy,a,x,xx,x.x,x.x,M,x.x,M,x.x,xxxx*hh<CR><LF>
| | | | | | | | | | | | | |
| | | | | | | | | | | | | |
| | | | | | | | | | | | | +------------------ 10
| | | | | | | | | | | | +--------------------- 9
| | | | | | | | | | +--+--------------------- 8
| | | | | | | |
+--+------------------------- 7
| | | | | | |
+------------------------------ 6
| | | | | | +---------------------------- 5
| | | | | +------------------------- 4
| | |
+----+------------------------ 3
| +---+---------------------------------- 2
+-------------------------------------------- 1
1. UTC of position
2. Latitude, N/S
3. Longitude, E/W
4. GPS quality indicator (see Note 1)
5. Number of satellite in use,00-12, may be different from the number in view
6. Horizontal dilution of precision
7. Antenna altitude above/below mean sea level (geoid), m
8. Geoidal separation, m (see Note 2)
9. Age of differential GPS data (see Note 3)
10. Differential reference station ID, 0000-1023
NOTE 1:
All GPS quality indicators in headings 1 through 8 are considered “valid”. The heading “0” is the only
“
invalid” indicator. The GPS quality indicator field should not be a null field.
0 = fix not available or invalid
1 = GPS SPS mode
2 = differential GPS, SPS mode
3 = GPS PPS mode
4 = Real Time Kinematic. Satellite system used in RTK mode with fixed integers
5 = Float RTK. Satellite system used in RTK mode with floating solution
6 = Estimated (dead reckoning) mode
7 = Manual input mode
8 = Simulator mode
NOTE 2:
Geoidal separation: the difference between the WGS-84 earth ellipsoid surface and mean sea level
(geoid) surface, “ – “ = mean sea level surface below the WGS-84 ellipsoid surface.
NOTE 3:
Time in seconds since last SC104 type 1 or 9 update, null field when DGPS is not used.
ZDA - Time and date
$--ZDA,hhmmss.ss,xx,xx,xxxx,xx,xx*hh<CR><LF>
| | | | | |
| | | | | +----------- 6
| | | | +-------------- 5
| | | +------------------ 4
| +---------------------- 3
| +------------------------- 2
+--------------------------------- 1
1. UTC
2. Day, 01 to 31 (UTC)
Содержание NVR-3000
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