Hi Didier: Many GPS receivers output carrier phase data but it's usually used in post processing to get survey grade position accuracy. Since the code phase position accuracy is larger than a wavelength the receiver does not know how many integer wavelengths to add. But because of satellite movement this can be figured out later.
The exception is the "in development" carrier phase timing which as far as I know can only be done using the Ashtech Z12. The Motorola GPS receivers have carrier phase data available, but when the 8 channel models were current there was no way to use it without spending a small fortune. I think today there's a Motorola binary to RINEX converter. Have Fun, Brooke Clarke w/Java http://www.PRC68.com w/o Java http://www.pacificsites.com/~brooke/PRC68COM.shtml http://www.precisionclock.com Didier Juges wrote: >John, > >......... > >I remember seeing a number of postings on time-nuts (must have been >Bruce) advocating the increased performance of carrier phase tracking, >but I need to educate myself about what it is and what good it can do >for me :-) > >Any feedback regarding whether I am getting something useful, or just >another item to go in the junk box (I did not break the bank, it went >for $0.99, and $10 shipping...) > >Didier KO4BB > > > > _______________________________________________ time-nuts mailing list time-nuts@febo.com https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts