Hi >From the US patent:
"... and possibility of extending the operating range by allowing increased separation of reference and base receivers by incorporating ionospheric models provided by WAAS" To me that says - position data from WAAS, carrier from GPS. ----- I have not seen a receiver that produces pseudo range for WAAS (as opposed to EGNOS). Bob -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of Magnus Danielson Sent: Thursday, July 11, 2013 9:25 AM To: [email protected] Subject: Re: [time-nuts] Speaking of Costas loops (WAAS) Hi Bob, On 07/11/2013 12:32 PM, Bob Camp wrote: > Hi > > If there are no receivers using the service (WAAS as a full GPS sat), it's either because: > > 1) Nobody knows about it > 2) It does not work > > Either way why spend the money to keep it running much better than needed for WAAS simply for it to be there unused? There are receivers that produce pseudo-ranges for it [1], and hence can use it in nav solutions. I just found a list of such receivers. The typical receivers does not discloses exactly how they use the WAAS/EGNOS/SBAS signal beyond the obvious correction data. There is also published works on using the WAAS and EGNOS carrier phase reception [2]. There is more if you dig around. [1] Egnos User Guide. http://ec.europa.eu/enterprise/policies/satnav/egnos/files/brochures-leaflet s/egnos-user-guide_en.pdf [2] US 6469663. http://www.google.com/patents/US6469663 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.
