- Mon May 18, 2009 5:50 pm
#73031
Does anyone know whether the San Jose FV-M8 module's 1-PPS signal is well-synchronized to the UTC values output in the NMEA sentences? I need to match up 5 Hz readings of the GPS to ~100 Hz samples of an Inertial Measurement unit. (It's a UAV application.) Because of the uncertainty in the time it takes the GPS's info to transmit over the serial lines (and the unknown latency in the device, between the time the fix was obtained and the NMEA message sent), I need some way to synchronize the GPS to the IMU. I could use the 1-PPS signal to trigger readings of the IMU, but that would only help if I knew that the PPS signal corresponded to, say, a NMEA UTC value of xxx.000 seconds.
Does anyone know whether any of the other GPS modules on this site have PPS signals synchronized to the NMEA values? Thanks if you've any info.
Does anyone know whether any of the other GPS modules on this site have PPS signals synchronized to the NMEA values? Thanks if you've any info.
David Towery (david.towery@aeroprobe.com)
Aeroprobe Corp.
1700 Kraft Dr. Suite 2350
Blacksburg, VA 24060
Aeroprobe Corp.
1700 Kraft Dr. Suite 2350
Blacksburg, VA 24060