2
votes
Confused about time systems in ephemeris computation (from GPS subframes)
My understanding is that $R_x$ is the receiver time when the signal is received. So that would make $t_x$ the transmission time. And you subtract the bias to get a more accurate transmission time.
- 191
1
vote
Delayed Kalman navigation based on two way ranges
I believe you're not taking the problem with the right angle in mind.
Your ping measurements are not delayed measurements, they are wrong. The problem is not that you are receiving them late but that,...
- 571
1
vote
GPS message: compute ephemeris data and pseudo-ranges from subframes
So the RXM-RAW and RXM-EPH messages come from IS-GPS-200H interface control document found here.
http://www.gps.gov/technical/icwg/IS-GPS-200H.pdf
But these are not exactly the same as RXM-RAW RXM-...
- 191
1
vote
Accepted
GPS message: compute ephemeris data and pseudo-ranges from subframes
The GPS standard has been the same since the first GPS satellites were launched, so sources from 1995 are very relevant In fact that is the document I would point you to. One of the best libraries for ...
- 1,904
Only top scored, non community-wiki answers of a minimum length are eligible