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Re: [Discuss-gnuradio] GPS on USRP

From: Carles Fernandez
Subject: Re: [Discuss-gnuradio] GPS on USRP
Date: Fri, 29 Feb 2008 19:06:43 +0100

Hi Faisal,

I'm also working with GNU Radio for GNSS applications. A good start could be a recording of samples into datafiles and then post-process the data in the way that you feel more comfortable (the book [1] comes with a DVD with a complete GPS L1 receiver implemented in MATLAB, all GNU code). Once you get familiarized with the processing, you can try to implement the receiver in GNU Radio.

At least, this is the way I'm following. Any suggestion would be welcome.


[1] Kai Borre, Dennis M. Akos, Nicolaj Bertelsen, and Peter Rinder, A Software-Defined GPS and Galileo Receiver: A Single-Frequency Approach (Applied and Numerical Harmonic Analysis). Birkhäuser Boston; 1 edition (November 9, 2006)

On Fri, Feb 29, 2008 at 6:45 PM, Paul Creekmore <address@hidden> wrote:

I'm at Purdue University working toward using the USRP for GNSS applications.  Check my understanding: are you wanting to use the USRP to record, say, L1 band samples directly to a data file?  Would you be performing all of the signal acquisition and tracking in post-processing with a separate software tool?

I'm working on Linux (Debian), but we aught to be able to trade notes.  If you've got a working installation of GNU Radio, I can show you how to record samples.


Phaysal Khan wrote:
I am a newbie to USRP, and still struggling to get it working on my windows machine. I am trying to use cygwin. I reckon that many ppl have already acquired and tracked GPS on USRP. Waht I want to do is to capture GPS IF samples (e.g. at IF=5 MHz) and use a software receiver to process those IF samples on PC. Any suggestions to start?!...

Faisal A. Khan
Doctral Candidate
University of New South Wales
NSW 2052, Sydney, Australia
P) +61-2-93854208    M)+61-401-260728

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