A good general purpose reference on GPS surveying is

http://140.194.76.129/publications/eng-manuals/em1110-1-1003/toc.htm

Title: * Engineering and Design - NAVSTAR Global Positioning System Surveying *
*by the Army Corp of Engineering.  Full manual is 20 Mb.


*On 12/6/2010 1:06 AM, Rob Kimberley wrote:
Their measurements are usually referenced to a known survey point via
differential methods.

Rob Kimberley

-----Original Message-----
From: [email protected] [mailto:[email protected]] On
Behalf Of Jim Lux
Sent: 06 December 2010 4:40 AM
To: [email protected]; Discussion of precise time and frequency measurement
Cc: Discussion of precise time and frequency measurement
Subject: Re: [time-nuts] OT [GPS Survey grade RX]


Sure..
That's what all those geodesy folks do.  Over sufficient time span, one can
relate gps measurements to an eci frame On Dec 5, 2010, at 5:43 PM, "J.
Forster"<[email protected]>  wrote:

GPS surveying "relative to astronomical reference"? I don't think so.

-John

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