NetModule NetBox NB1310, Руководство пользователя

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User Manual NetBox Wireless Routers 26-Apr-2012 103/110
6 Software Interfaces
6.1 GPS Server
6.1.1 Berlios GPS Server
This is a TCP server which provides GPS data in various formats. Find more information under
http://gpsd.berlios.de
6.1.2 NetModule GPS Server
If valid GPS data is available it will be sent as UDP Payload to the configured host. The content is separat-
ed into two lines. The first line contains data in the GPGGA format; the second line contains GPRMC data.
6.1.2.1 $GPGGA - Global Positioning System Fix Data
Format: $GPGGA,<time>,<latitude>,<longitude>,<quality>,<satellites>,0,<sealevel>,,*<CS><CR><LF>
Sample Data: $GPGGA,154250,4749.8678,N,00871.8469,E,1,06,0.0,498,M,0.0,M,,*6A <CR><LF>
No. Name Data Description
1 Sentence Identifier $GPGGA Global Positioning System Fix Data
2 Time <time> UTC of position fix
3 Latitude <latitude,N/S> Latitude of fix
4 Longitude <longitude,E/W> Longitude of fix
5 Fix Quality <quality> 0 = Invalid
1 = GPS fix
6 = estimated
6 Number of Satellites <satellites> Number of satellites in view
7 Horizontal Dilution of Precision
(HDOP) 0.0 Not available (Value = 0)
8 Altitude <sealevel,M> Meters above mean sea level
9 Height of geoid above WGS84 ellip-
soid 0.0,M Not available (Value = 0)
10 Time since last DGPS update blank No last update
11 DGPS reference station id blank No station id
12 Checksum *<CS> Used by program to check for transmis-
sion errors
13 White spaces <CR><LF> Carriage return and line feed