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GPS 18 Technical Specifications (190-00307-00) Rev. D
Page 27
Receiver Measurement Record
typedef 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 number
cycles Number of accumulated cycles
pr Pseudorange (meters)
phase To convert to (0 to 359.999) multiply by 360.0 and divide by 2048.0
slp_dtct 0 = no cycle slip detected; non-zero = cycle slip detected
snr_dbhz Signal strength - db Hz
svid Satellite number (0 to 31; 119 to 138 for WAAS). Note: add 1 to offset to current svid
numbers.
valid 0 = information not valid; non-zero = information valid