Paul, The post can be found at:
https://lists.ntp.isc.org/pipermail/questions/2007-June/014586.html I'm not sure what you mean by the "nmea patch"? My guess is you are trying to do it all on linux and had to jump through hoops to get it all working. It's been a while since I looked at the NMEA refclock, but I'm pretty sure all it looks for is to parse the date/time. A modified nmea reflock driver could be written so that it also checks certain sentences to see if the receiver has a 2D/3D fix, or even is just tracking any satellites. I guess it's not currently in there because not all receivers output the same sentences by default. Also again a 'better' receiver will have TRAIM and/or capable of an overdetermistic single-satellite solution. Again, what GPS receiver are you using? If you are serious it might be worth spending a little cash to mount an antenna with a clear view of the sky and use a receiver that has better features geared toward timing solutions. Jason >Jason >I couldn't find your post on the prefer - it sounds exactly what I am >finding. Incidently the mnea patch does listen to the nmea data (so you >could have a totally free standing ntp system. Unfortunately simple GPS >receivers don't have the capability you mention, hence the need for >sanity checks. > >Paul _______________________________________________ questions mailing list [email protected] https://lists.ntp.isc.org/mailman/listinfo/questions
