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GPSM001 Datasheet(PDF) 9 Page - rfsolutions.ltd |
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GPSM001 Datasheet(HTML) 9 Page - rfsolutions.ltd |
9 / 20 page DS031-2 Jan ‘04 ©2003 RF Solutions Ltd, www.rfsolutions.co.uk Page 9 T Te ell 0 01 12 27 73 3 8 89 98 80 00 00 0 F Fa ax x 0 01 12 27 73 3 4 48 80 06 66 61 1 GPSM001 OEM GPS Receiver Module GSV—GNSS Satellites in View Description: This message reports the satellites in view, their ID numbers, elevation, azimuth, and SNR values (up to four satellites per message). GSV is described in Table 8. Name Example Units Description Message ID $GPGSV GSV protocol header Number of Messages 1 2 Range 1 to 3 Message Number 1 1 Range 1 to 3 Satellites in View 07 Satellite ID 07 Channel 1 (Range 1 to 32) Elevation 79 degrees Channel 1 (Maximum 90) Azimuth 048 degrees Channel 1 (True, Range 0 to 359) SNR (C/No) 42 dBHz Range 0 to 99, null when not tracking … … Satellite ID 27 Channel 4 (Range 1 to 32) Elevation 27 degrees Channel 4 (Maximum 90) Azimuth 138 degrees Channel 4 (True, Range 0 to 359) SNR (C/No) 42 dBHz Range 0 to 99, null when not tracking Checksum *71 <CR><LF> End of message termination 1 Depending on the number of satellites tracked multiple messages of GSV data may be required. Table 8. GGA Data Format Example: The values reported in this example are interpreted as shown in Table 8. Two messages are require to complete the data transmission. $GPGSV,2,1,07,07,79,048,42,02,51,062,43,26,36,256, 42,27,27,138,42*71 $GPGSV,2,2,07,09,23,313,42,04,19,159,41,15,12,041, 42*41 RMC—Recommended Minimum Specific GNSS Data Description: This message reports the time, date, position, course, and speed from the receiver’s navigation solution. RMC is described in Table 9. Name Example Units Description Message ID $GPRMC RMC protocol header UTC Position 161229.487 Hh mm ss.sss Status A A = data valid or V = data not valid Latitude 3723.2475 Dd mm.mmmm N/S Indicator N N = north or S = south Longitude 12158.3416 Ddd mm.mmmm E/W Indicator W E = east or W = west Speed Over Ground 0.13 knots Course Over Ground 309.62 degrees True Date 120598 Dd mm yy Magnetic Variation 1 degrees E = east or W = west Checksum *10 <CR><LF> End of message termination 1 All "course over ground" data are geodetic WGS84 directions. Table 9. RMC Data Format Example: The values reported in this example are interpreted as shown in Table 9: $GPRMC,161229.487,A,3723.2475,N,12158.3416,W,0.13, 309.62,120598, ,*10 |
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