On 06/01/2010 03:15 PM, Johnathan Corgan wrote: > > I think he's using a USRP2. Isn't the dual source USRP1 only? > > What he's asking for is a dual, coherent DDC for the I and Q inputs of > a BasicRX in a USRP2. This is a common enough request that I think it > would be useful to put into the stock FPGA functionality of UHD, using > VRT to separate the samples into two separate streams. > > Johnathan > > Yes, that's precisely what I want. I want to be able to treat the two inputs of a Basic_RX as real-sampled data that are largely independant, but they're both tuned to the same frequency.
This is for precision radiometry, with a "outside world" channel and a "reference" channel. There are a couple of approaches--one using a reference channel, and the other switching the entire gain chain between "outside world" and "reference". I want to explore both options. The switching option would use a single input, with the input switched. -- Principal Investigator Shirleys Bay Radio Astronomy Consortium http://www.sbrac.org _______________________________________________ Discuss-gnuradio mailing list [email protected] http://lists.gnu.org/mailman/listinfo/discuss-gnuradio
