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Non-differential GPS fix available, 2 = Differential
GPS (DGPS) fix available
<7>
Number of satellites in use, 00 to 08 (leading zeros
will be transmitted)
<8>
Horizontal dilution of precision, 1.0 to 99.9
<9>
Antenna height above/below mean sea level, -
9999.9 to 99999.9 meters
<10>
Geoidal height, -999.9 to 9999.9 meters
<11>
Differential GPS (RTCM-SC104) data age, number
of seconds since last valid RTCM transmission
(null if non-DGPS)
<12>
Differential Reference Station ID, 0000 to 1023
(leading zeros will be transmitted, null if non-
DGPS)
4.2.5 GPS DOP and Active Satellites (GSA)
$GPGSA,<1>,<2>,<3>,<3>,<3>,<3>,<3>,<3>,<3>,<3>,,,,,<4>,<5>,
<6>*hh<CR><LF>
<1>
Mode, M = manual, A = automatic
<2>
Fix type, 1 = not available, 2 = 2D, 3 = 3D
<3>
PRN number, 01 to 32, of satellite used in solution,
up to 8 transmitted (leading zeros will be transmitted)
<4>
Position dilution of precision, 1.0 to 99.9
<5>
Horizontal dilution of precision, 1.0 to 99.9
<6>
Vertical dilution of precision, 1.0 to 99.9
4.2.6 GPS Satellites in View (GSV)
$GPGSV,<1>,<2>,<3>,<4>,<5>,<6>,<7>,...<4>,<5>,<6>,<7>
*hh<CR><LF>
<1>
Total number of GSV sentences to be transmitted
<2>
Number of current GSV sentence
<3>
Total number of satellites in view, 00 to 08 (leading
zeros will be transmitted)
<4>
Satellite PRN number, 01 to 32 (leading zeros will
be transmitted)
<5>
Satellite elevation, 00 to 90 degrees (leading zeros
25
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