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-leaflets/egnos-user-guide_en.pdf
[2] US 6469663. http://www.google.com/patents/US6469663
Cheers,
Magnus
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