From: Bruce Griffiths <[EMAIL PROTECTED]> Subject: Re: [time-nuts] Earth rotation angle parameters via GPS? Date: Wed, 19 Mar 2008 16:38:28 +1300 Message-ID: <[EMAIL PROTECTED]>
> Bruce Griffiths wrote: > > The GPS interface control document IS-GPS-200D defines message type 32 > > on page 145 (Figure 30-5) and pages 175-178. > > The message contains the parameters necessary to calculate UT1 (Earth > > rotation angle) when UTC is known. > > Does anyone know of a readily available GPS receiver that makes these > > parameters accessible to the user? > > > > Bruce > > > Rephrasing the above: > > What GPS receivers (preferably timing recievers) are readily available > that make the data contained in the CNAV messages broadcast on L2C > available to the user? L2C capable receivers are still rare. I am supprised we have not seen any normal user GPS with L2C capability. There are now 6 birds up there with L2C capability. With L1 C/A and L2C capability a standard receiver should be able to greatly improve precission. Cheers, Magnus _______________________________________________ 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.
