Could you just use Yagi's and send I/Q streams to a server? Maybe a time issue with TCP/IP lag. But you could possibly time stamp the I/Q data.. Additionally, I am interested in larger, slower marine vessels more than small, fast moving planes.
What do you mean by Dynamic Range? I have briefly looked at the University of Washington setup where they are separated by mountains. I assume since they are observing such a far distance, the receiving stations are relatively not far apart(150km). Couldn't you network two stations like they do here and just use yagi's(one pointed directly toward the tower and one towards your area of interest?) They would need to be close since your observation field is at a much shorter distance. Why would you need to use only one USRP? I can send a I/Q stream with a Raspberry Pi and have all demodulation and processing done on the server side. Thanks for the help, Karl Petrow -----Original Message----- From: Johnathan Corgan [mailto:johnat...@corganlabs.com] Sent: Tuesday, March 26, 2013 9:53 AM To: Karl Petrow Cc: Discuss-gnuradio@gnu.org Subject: Re: [Discuss-gnuradio] GR-Radar, Passive Radar On Mon, Mar 25, 2013 at 9:18 AM, Karl Petrow <kpet...@maritimeinfosystems.com> wrote: > Does anyone have a link to any recent progress made on this? I > recently saw this lecture: We've done work with some commercial customers researching low-power active radar with USRPs, but these were (customer) internal projects that did not get published externally. Regarding passive radar--it is very difficult with low-cost hardware such as the USRP to get the dynamic range needed to simultaneously receive the direct path from an emitter and the echoes from an airborne target. Some types of scene geometry would allow physical shielding to attenuate the direct path for a subset of the antenna array, which would help reduce the dynamic range necessary. Johnathan _______________________________________________ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org https://lists.gnu.org/mailman/listinfo/discuss-gnuradio
