Hi, Try to use the echotimer shipped with gr-radar. Actually, for FMCW you don't need a tight TX/RX sync, but probably that fixes it.
As well, have a look at the spectrum and check the output of the peak detector. Do you have a high enough SNR for an unambigious peak detection? Or you are just detecting clutter? If you are just detection clutter, it could look like random targets. Furthermore, have a look at grradar.wordpress.com and the videos showing the setup of the Dual CW/FSK radars. Probably that helps you too. Greetings Stefan On 04/08/2016 11:51 PM, Giovanni Bengalis wrote: > Hi Stefan, > > I'm Giovanni,actually I'm working on my last engineering project for > university , I'm trying to implement an altimeter radio with SDR like > USRP N210 or PicoDigitizer 250. > I need your help , actually the simulation works very well , so I can > simulate the FMCW with a bandwidth of 40 MHz . When I removed the static > target simulator and add > a USRP Source to receive the signal by antenna , the range printed is > random. I used a USRP N210. > > > Sincerely, > Giovanni B. > > > _______________________________________________ > Discuss-gnuradio mailing list > Discuss-gnuradio@gnu.org > https://lists.gnu.org/mailman/listinfo/discuss-gnuradio > _______________________________________________ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org https://lists.gnu.org/mailman/listinfo/discuss-gnuradio
