2007/5/23, Ben Loftin <address@hidden>:
> Chris,
>
> I have successfully done coarse acquisition using the correlator developed
> here,
>
> https://projects.cecs.pdx.edu/~icarroll/SoftwareGPSCorrelator/index.cgi/wiki
>
> A plot of the 'acquisition' is here
>
> http://64.6.242.226/grblog/uploaded_images/sat_18-714418.png
>
> for satellite PRN 18 with a code offset of 1988 as shown by the 'spike'. The
> gain for the dbsrx was 86 dB while using an active external antenna to get 28
> dB more of gain. More details on my blog,
>
> http://64.6.242.226/grblog/grblog.html
>
> Not sure if I will have a link to the sample data because it is almost 2 GB
> compressed, yikes! If you know how to break up the data let me know and I
will
> upload just the begininning of the file, since it is just over a minute of
> data.
If anyone is interested, I have a complete coarse acquisition module
written for GNU Radio. The source code is available from
http://code.google.com/p/opengnss/.