Hi I believe the *code* is corrected, but the carrier frequency is not. Without correction it's plenty close enough for any receiver that can handle a normal GPS sat. The intended "product" is the code rather than the carrier. Even if you tried to correct for doppler, it would only work for a single point. Your velocity to every place else would be either to fast or to slow for the correction (the motion is in 3 dimensions …).
Bob On Jul 4, 2013, at 5:23 PM, Magnus Danielson <[email protected]> wrote: > On 07/03/2013 02:29 PM, Bob Camp wrote: >> Hi >> >> There are two batches of GPS / WAAS sats up there: >> >> 1) The ones with numbers above 100 that are geosync and that only do WAAS >> >> 2) The ones with numbers<= 32 that do nav. These are not geosync. >> >> I believe the only ones with corrected / high stab clocks on board are those >> in the second group. The stuff in the first group aren't dedicated sats, >> just leased transponders on conventional multipurpose geosync birds. > > Correct. But the up-link station monitors the signal and makes corrects as I > recall it. In fact, there is a whole array of monitoring stations to provide > for ionospheric corrections. > > The orbit is also known and corrected for. > > WAAS/EGNOS has 100 baud data, using half-rate convolution code. > > 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. _______________________________________________ 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.
