gps accuracy

[Don]

Hi,

A quote from a site about Gps accuracy:

All users will correct the raw pseudoranges for the ionospheric delay. The
simplest correction will use an internal diurnal model of these delays. The
parameters can be updated using information in the GPS communications
message (although the accuracy of these updates is not yet clearly
established). The effective accuracy of this modeling is about 2-5 m in
ranging for users in the temperate Zones. 

For more than you ever wanted to know:

http://www.edu-observatory.org/gps/gps_accuracy.html

Regards,
Don Rose, B.Mus., A.M.U.S., A.MUS., R.M.T., R.P.T.

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