Garmin GPS 15L Technical Specifications

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Garmin GPS 15L Technical Specifications Manual pdf 30 page image

190-00266-01 GPS 15H & 15L Technical Specifications Rev. DPage 26Position RecordThe Position Record has a record identifier oftypedef struct{float alt;float epe;float eph;float epv;int fix;double gps_tow;double lat;double lon;float lon_vel;float lat_vel;float alt_vel;float msl_hght;int leap_sec;long grmn_days;} cpo_pvt_data;alt Ellipsoid altitude (meters)epe Est pos error (meters)eph Pos err, horizontal (meters)epv Pos err, vertical (meters)fix 0 = no fix; 1 = no fix; 2 = 2D; 3 = 3D; 4 = 2D differential; 5 = 3D differential;6 and greater - not definedgps_tow GPS time of week (sec)lat Latitude (radians)lon Longitude (radians)lon_vel Longitude velocity (meters/second)lat_vel Latitude velocity (meters/second)alt_vel Altitude velocity (meters/second)msl_hght Mean sea level height (meters)leap_sec UTC leap secondsgrmn_days Garmin days (days since December 31, 1989)Receiver Measurement Recordtypedef struct{unsigned long cycles;double pr;unsigned int phase;char slp_dtct;unsigned char snr_dbhz;char svid;char valid;} cpo_rcv_sv_data;typedef struct{double rcvr_tow;int rcvr_wn;cpo_rcv_sv_data sv[ 12 ];} cpo_rcv_data;rcvr_tow Receiver time of week (seconds)rcvr_wn Receiver week numbercycles Number of accumulated cyclespr Pseudorange (meters)phase To convert to (0 -359.999) multiply by 360.0 and divide by 2048.0slp_dtct 0 = no cycle slip detected; non-zero = cycle slip detectedsnr_dbhz Signal strength - db Hz