GPS 20 ms accumulations

For all the GPS users out there, has anyone been able to extend
correlations to 20 ms? I have had a heck of a time extending the
correlation interval without hosing my 3rd order PLL.


[email protected]
NASA Goddard Space Flight Center
AETD - Mission Engineering and Systems Analysis
Component and Hardware Systems Branch
Mail Code 596, Greenbelt Rd.
Greenbelt, MD 20771
(301) 286-6565
(301) 286-3823 (fax)

If you have data I could look at that would be great, but in my post I
did not mention I am using a USRP I clocked externally with a signal
generator. In your message you indicate that you were successful
extending correlations to 20 ms when you used a better clock, which
tells me I am screwing up somewhere.


[email protected]
NASA Goddard Space Flight Center
AETD - Mission Engineering and Systems Analysis
Component and Hardware Systems Branch
Mail Code 596, Greenbelt Rd.
Greenbelt, MD 20771
(301) 286-6565
(301) 286-3823 (fax)

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