Garmin GPS 17HVS Technical Specifications - Page 28

alt epe eph epv fix gps_tow lat lon lon_vel lat_vel alt_vel msl_hght leap_sec grmn_days Ellipsoid altitude (meters) Est pos error (meters) Pos err, horizontal (meters) Pos err, vertical (meters) 0 = no fix; 1 = no fix; 2 = 2D; 3 = 3D; 4 = 2D differential; 5 = 3D differential; 6 and greater = not defined GPS time of week (sec) Latitude (radians) Longitude (radians) Longitude velocity (meters/second) Latitude velocity (meters/second) Altitude velocity (meters/ second) Mean sea level height (meters) UTC leap seconds Garmin days (days since December 31, 1989) Receiver Measurement Record - 0x10 - 0x34 - 0xE2 - cpo_rcv_data - one byte checksum - 0x10 - 0x03 (DLE is first byte) (Receiver record identifier) (Size of data) (See below) (The sum of bytes between the delimiters should equal 0) (DLE) (ETX) typedef struct { unsigned long double unsigned int char unsigned char char char } cpo_rcv_sv_data; cycles; pr; phase; slp_dtct; snr_dbhz; svid; valid; typedef struct { double int cpo_rcv_sv_data } cpo_rcv_data; rcvr_tow; rcvr_wn; sv[ 12 ]; rcvr_tow rcvr_wn cycles pr phase slp_dtct snr_dbhz svid valid Receiver time of week (seconds) Receiver week number Number of accumulated cycles Pseudorange (meters) To convert to (0 -359.999) multiply by 360.0 and divide by 2048.0 0 = no cycle slip detected; non-zero = cycle slip detected Signal strength Satellite number (0 to 31) Note: add 1 to offset to current svid numbers 0 = information not valid; non-zero = information valid 190-00228-21 GPS 16/17 Technical Specifications Page 24 Rev. A