A structure used to hold time in GPS format. More...

#include <gpsdefs.h>

Data Fields
uint16_t	wn
	the week number since the GPS system has been put into operation More...

uint32_t	sec
	the second of that week More...

uint32_t	tick
	fractions of a second, 1/RECEIVER_INFO::ticks_per_sec units More...

Detailed Description

A structure used to hold time in GPS format.

Date and time refer to the linear time scale defined by GPS, with the epoch starting at UTC midnight at the beginning of January 6, 1980.

GPS time is counted by the week numbers since the epoch, plus second of the week, plus fraction of the second. The week number transmitted by the satellites rolls over from 1023 to 0, but Meinberg devices just continue to count the weeks beyond the 1024 week limit to keep the receiver's internal time.

UTC time differs from GPS time since a number of leap seconds have been inserted in the UTC time scale after the GPS epoch. The number of leap seconds is disseminated by the satellites using the UTC parameter set, which also provides info on pending leap seconds.

Definition at line 2563 of file gpsdefs.h.