USGlobalSat GPS Forums

Please login or register.

Login with username, password and session length
Advanced search  

News:

Pages: [1]   Go Down

Author Topic: 1 PPS signal and NMEA UTC values  (Read 1126 times)

david.andrei

  • Newbie
  • Karma: 0
  • Offline Offline
  • Posts: 2
1 PPS signal and NMEA UTC values
« on: November 21, 2012, 11:27:40 am »

Hello

I would like to know if the 1 PPS signal is well-synchronized to the UTC values output in the NMEA sentences (GGA, RMC, GLL)? I need to match up the 1hz readings of the GPS to ~50 samples per second of a data acquisition system. I m using the 1 PPS signal to trigger readings of the data acquisition system, but that would only help if I knew that the PPS signal corresponded to, say, a NMEA UTC value of xxx.xxx seconds.
 
Additionally, from the specs, I read that the time is 1us synchronized to GPS time. Does it mean that when the 1 PPS arrives, we are on the boudary of a GPS second within 1 microsecond precision. Then this time is converted to UTC and rounded to 1 millisecond (NMEA UTC value of xxx.000 seconds)?

Thanks
 
Logged

renaebaldini

  • Newbie
  • Karma: 0
  • Offline Offline
  • Posts: 2
Re: 1 PPS signal and NMEA UTC values
« Reply #1 on: June 04, 2013, 01:28:39 am »

The activity of the animal beings has become acutely active everywhere on this earth. Bodies do not get time to booty a blow for a while. With the accretion use of altered gadgets of Gps Jammer, the possibilities of accepting the aboriginal of blow accept absolutely finished. The adaptable phones or the corpuscle phones are some of these accessories that accumulate the bodies consistently in blow with the alfresco world. The adaptable building are additionally accessible about everywhere these canicule and due to this the accessibility of the Cell Phone Jammer has become alike added quick and authentic. Today, you cannot break out of ability of these adaptable building as their signals can bolt your about anywhere. The bearings of bodies who accord to altered business professions has become actual analytical of wifi jammer as their authorities bolt them anywhere any moment.
Logged

david.andrei

  • Newbie
  • Karma: 0
  • Offline Offline
  • Posts: 2
Re: 1 PPS signal and NMEA UTC values
« Reply #2 on: August 14, 2013, 10:40:57 pm »

Hello

I would like to know if the 1 PPS signal is well-synchronized to the UTC values output in the NMEA sentences (GGA, RMC, GLL)? I need to match up the 1hz readings of the GPS to ~50 samples per second of a data acquisition system. I m using the 1 PPS signal to trigger readings of the data acquisition system, but that would only help if I knew that the PPS signal corresponded to, say, a NMEA UTC value of xxx.xxx seconds.
 
Additionally, from the specs, I read that the time is 1us synchronized to GPS time. Does it mean that when the 1 PPS arrives, we are on the boudary of a GPS second within 1 microsecond precision. Then this time is converted to UTC and rounded to 1 millisecond (NMEA UTC value of xxx.000 seconds)?

Thanks
Logged
Pages: [1]   Go Up
 

Page created in 0.185 seconds with 18 queries.