Hi Peter,
maybe you could be interested on this: at
www.gps-sdr.com there is a C driver for the USRP that manages a couple of DBSRX daughterboards, one centered at L1 and the other one at L2, just what you are mentioning for building a dual-frequency GPS software receiver.
Cheers,
Carles.
On Fri, Aug 8, 2008 at 4:53 PM, Peter Monta
<address@hidden> wrote:
On the chance that there are GPS folks here that are
familiar with the status of the new L2C signals: is there
a currently-maintained list of which satellite is emitting
what? In particular, PRN 29 seems to have no L2C (or
at least none that I can acquire), while PRN 31 has a nice
strong carrier (tracked with L2CM) but no NAV or CNAV data
modulation---it's apparently sending only carrier. I'd
like to find a signal with CNAV data.
While I haven't tried it yet, the USRP should be capable
of saving to disk both L1 and L2C using a pair of dbsrx
daughtercards. That should permit dual-frequency
receiver software. It would be nice to have a
waveform-pair-to-RINEX tool to allow use of the various
web services for dual-frequency solutions.
Cheers,
Peter
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