[time-nuts] NIST

Mark Sims holrum at hotmail.com
Fri Aug 31 15:03:39 EDT 2018

A GPS receiver that supports SBAS, etc will tell you where the sats are.   Some only report to 1 degree,  others 0.1 to 0.01 degrees resolution.  The beam with of a small dish at GPS freqs is not all that narrow.

Using orbital elements or processing the GNSS ephemeris message will give you a result with quite a bit better resolution.

>  There is another problem in that area.  How accurately is the location of the 
satellite known?  published?

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