Re: [Discuss-gnuradio] GPS with DBSRX, Almost There

[Peter Monta]

Martin Dvh wrote:


> Maybe you could inject a stable frequency near the wanted RX frequency.
> Say a few Mhz away from the 1.57542e9 you want to receive.
> Then you could use this in the output to remove the jitter and LO drift.
>
> for example:
> inject 1600000000 Mhz  (=25 harmonic of 64MHz) at the input (after the saw 
> filter)
> This will result in 24.58 Mhz +jitter +LOdrift at the input of the USRP (after 
> dbs_rx downmix)
>   

I wonder if any 25th harmonic is already in the signal, by virtue
of leakage within the USRP itself?  That would be great.

Cheers,
Peter Monta