> The nominal accuracy is no better than using the sun as a compass. That is very wrong! With an open skyview, a 10 meter baseline, two decent GPS receivers and antennas will outperform a northfinding gyro-solution both in performance, measurement time and very much so in cost.
> Two GPS systems (say TBolts) have to be an amazingly great distance > apart to give a decent azimuth. Tbolts has no serial message giving carrier phase meassurements, but the doppler measurements might be possible to use. > Apart from star observations, a gyrocompass is the tool of choice if > you want to add an azimuth to a GPS position. If you are in an open environment, GPS is nowadays the best solution. > Does anyone know how laser gyroscopes are developing? Laser gyroscopes - as in Ring Laser Gyroscopes or as in Fiber Optic Gyroscopes? > cheers, > Neville Michie > > > > > On 26/08/2010, at 11:04 AM, David Smith wrote: > >> As a fair percentage of the discussion amongst the learned >> gentlemen on this group involves GPS-based timing systems, I'd like >> to ask a non-time related, but GPS-related question. >> >> As part of microwave radio experimentation, often on windy >> hilltops, I have a need to find direction very accurately. I have >> seen advertised GPS-based Azimuth Pointing Systems such as this: >> http://www.ascscientific.com/APS.html >> However they are a little (lot) out of my budget range. >> >> The system seems to work by taking the raw satellite phase >> information from two separate GPS systems and crunching the data to >> come up with an azimuth figure. Has anyone heard of a (Open >> Source?) program that could be used to do these calculations? >> >> Regards, >> David Smith >> >> _______________________________________________ >> time-nuts mailing list -- [email protected] >> To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/ >> time-nuts >> and follow the instructions there. > > > _______________________________________________ > time-nuts mailing list -- [email protected] > To unsubscribe, go to > https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > and follow the instructions there. > _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
