GPS 18 Technical Specifications (190-00307-00) Rev. DPage 174.2.4 Global Positioning System Fix Data (GGA)$GPGGA,<1>,<2>,<3>,<4>,<5>,<6>,<7>,<8>,<9>,M,<10>,M,<11>,<12>*hh<1> UTC time of position fix, hhmmss format for GPS 18 PC or LVC; hhmmss.s format for GPS 18-5Hz<2> Latitude, ddmm.mmmm format for GPS 18 PC/LVC; ddmm.mmmmm for GPS 18-5Hz(leading zeros will be transmitted)<3> Latitude hemisphere, N or S<4> Longitude, dddmm.mmmm format for GPS 18 PC/LVC; dddmm.mmmmm for GPS 18-5Hz(leading zeros will be transmitted)<5> Longitude hemisphere, E or W<6> GPS quality indication, 0 = fix not available, 1 = Non-differential GPS fix available, 2 =Differential GPS (WAAS) fix available, 6 = Estimated<7> Number of satellites in use, 00 to 12 (leading zeros will be transmitted)<8> Horizontal dilution of precision, 0.5 to 99.9<9> Antenna height above/below mean sea level, -9999.9 to 99999.9 meters<10> Geoidal height, -999.9 to 9999.9 meters<11> Null (Differential GPS<12> Null (Differential Reference Station ID)4.2.5 GPS DOP and Active Satellites (GSA)$GPGSA,<1>,<2>,<3>,<3>,<3>,<3>,<3>,<3>,<3>,<3>,<3>,<3>,<3>,<3>,<4>,<5>,<6>*hh<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 12 transmitted (leading zeros will betransmitted)<4> Position dilution of precision, 0.5 to 99.9<5> Horizontal dilution of precision, 0.5 to 99.9<6> Vertical dilution of precision, 0.5 to 99.94.2.6 GPS Satellites in View (GSV)$GPGSV,<1>,<2>,<3>,<4>,<5>,<6>,<7>,...<4>,<5>,<6>,<7>*hh<1> Total number of GSV sentences to be transmitted<2> Number of current GSV sentence<3> Total number of satellites in view, 00 to 12 (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 will be transmitted)<6> Satellite azimuth, 000 to 359 degrees, true (leading zeros will be transmitted)<7> Signal to noise ratio (C/No) 00 to 99 dB, null when not tracking (leading zeros will betransmitted)NOTE: Items <4>,<5>,<6>, and <7> repeat for each satellite in view to a maximum of four (4) satellitesper sentence. Additional satellites in view information must be sent in subsequent bursts of NMEA 0183data. These fields will be null if unused.
