Hello Christian,
Thank you very much for the links.
On Sun, 12 Dec 2010 19:22:41 +0100, "Christian Vogel" <vogelchr(a)vogel.cx>
wrote:
There are a few. My Trimble Thunderbolt can give you doppler and
codephase (gps often calls it "pseudorange").
Thats interesting, the ublox 5 GPS module I was playing with only
provides those data if you have the so called "raw data premium
feature" enabled (whatever this means, I have not yet looked at
the details).
Sparkfun sells "only the frontend" (mixer,
1-bit ADC, USB)
with sourcecode available in a book and on DVD (WTF?!)
--->
http://www.sparkfun.com/products/8238
Interesting device, I wasn't aware of it (I know about the book).
Is the Source Code of the book available ? So far I have only
seen some material for download at the following site, not sure
if there is the whole content of the DVD:
http://kom.aau.dk/project/softgps/
Would be interesting to use the code with a USRP.
There's actually quite a lot of information out
there,
but there also seem to be quite a lot of half-abandoned
projects (and a few seem to have vanished since the last time I had
an interest in it around 2005).
I had a short look at some but always had the impression that
it is not exactly what I am looking for. I guess I should try
to get a GPS receiver which provides the required data, thats
probably the easiest approach.
Best regards,
Dieter
--
Dieter Spaar, Germany spaar(a)mirider.augusta.de