Re: [Discuss-gnuradio] GPS for USRP ideas

[Matt Ettus]

Quoting Brian Whitaker <address@hidden>:

> Also, every GPS receiver I've seen uses a low-IF -- the receiver brings the
> signal down to about 4MHz, where the BB ADC samples it from a very accurate
> 'GPS clock' (this clock is the low-IF center freq). Not that a GnuRadio GPS
> implementation would have to do this, but we'd need to figure out why the
> rest of the world does this so understand what we'd be giving up in going to
> a direct conversion system.

You can do low-IF, direct conversion, or even high-IF (i.e. 70 MHz) with the
USRP.  Its very flexible.