RE: Mearument processing

Dear Ratnakara,

As a good detailed introduction of relativistic effects on GPS, you may want
to look at the following reference:

Global Positioning Systems: Theory and Applications, Volume 1, Chapter 18,
Bradford Parkinson (Editor), Progress in Astronautics and Aeronautics,
Volume 164 (1996)

The will not only tell you about the Sagnac effect, but other effects too.

It depends what you mean by "very precise position", but depending of the
level of accuracy you need and your application, you may want to use dual
frequency receivers and/or differential corrections such as those of the
Omnistar HP service (which you'd have to pay for).

Have you also considered DGPS?

Regards,
Cedric Seynat



__________________________________________
Dr. Cedric Seynat
Satellite Navigation Systems Engineer
GPSat Systems Australia
www.gpsatsys.com.au
Suite 1/22 Aberdeen Road
MacLeod Victoria
Australia 3085
Tel.: +61 (0)3 9455 0041
Fax.: +61 (0)3 9455 0042


-----Original Message-----
From: [email protected]
[mailto:[email protected]]On Behalf Of Ratnakara
S C
Sent: Tuesday, 8 June 2004 9:24 PM
To: [email protected]
Subject: [OpenSource_GPS] Mearument processing


Dear sir
 I am trying to process code range measurements from a ground receivers. I
wanted to compute my receiver position. Forthis purpose I have to compute
range
residue w.r.to measurement. Here I have a problem of modelling all errors. I
wanted to model all errors to get very precise position. some suggest to add
Sagnac effect. Can you give me the reference paper or thesis which convey
all
these things.

with regards
Ratnakara S C
Scientist SF
Flight Dynamics Division
ISRO Satellite Centre
Airport Road, Vimanapura Post
Bangalore - 560017, INDIA

Phone: +91-80-5082467

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