); SAEximRunCond expanded to false Errors-To: [EMAIL PROTECTED] RETRY On Wed, August 22, 2007 1:26, Hal Murray said: > ); SAEximRunCond expanded to false > Errors-To: [EMAIL PROTECTED] RETRY > > > I'm trying to check/debug some new software so I'm paying attention to the > output of a Garmin GPS 18 USB. > > It's inside my house, not a great location. Mostly, it works. But every > now > and then it fades out for a few minutes.
Start logging a quality measure for each satellit vs time vs elevation&azimuth. There is always a message giving some kind of SNR. After a few days you should have a good "map" of what sky positions get through to your receiver and what the normal "quality" is at each position. Also note that the 20dB crosscorrelation resistance of the CA code is not all that good. If you get a single SV directly through a window it might be more than 20dB stronger than others going through the house and effectivly jam the weaker signals. -- Björn _______________________________________________ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
