We can do this I am sure. I thank Dave and Krys for the advance work they have been doing when not many (any?) were "listening". If we allow the FPGA to do (carrier phase/code) (acquisition/tracking ) in a joint-detection process run on the FPGA, I believe we can do a 12 channel receiver.
In addition to this, Brickle and I have specific interests in Cognitive Radio usage of the USRP as a wideband front end and likely hooking this in to a system with a narrow band SDR to prosecute the signal in a higher dynamic range regime. We are extremely interested in active antenna work as well. I would like to be doing four channel beam steering by the time of AMSAT-NA symposium this fall. Bob -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] Behalf Of Eric Blossom Sent: Sunday, March 20, 2005 6:34 PM To: [EMAIL PROTECTED] Cc: Krzysztof Kamieniecki; discuss-gnuradio@gnu.org Subject: Re: [Discuss-gnuradio] Query on GPS On Sun, Mar 20, 2005 at 09:21:08AM -0500, David Bengtson wrote: > Hi: > > I'm still working on this slowly. I've selected the Maxim 2745 as the > best part available that is reasonably accessible. I've ordered and > received samples of the part from Maxim, and am starting to work on a > block diagram, followed by a schematic. This is looking like a RX module > to plug into the USRP board, and feed data into the FPGA for down > sampling and filtering. > > Question for folks on the mailing list. I'm a hardware engineer, and am > more adept in programming in Matlab and solder than Python. Are there > enough folks out there that would be interested in helping with the > software to make this feasible, as I'm certainly not the guy to write > the code. I do feel competent to do the block diagram for the software, > although Krys is probably more up to speed on that. My guess is that we > would need ~ 2 to 3 folks writing code to demodulate the GPS signal and > turn it into a location. We can talk about generating hardware, as it > looks like the GPS board by itself will be pretty cheap, although costs > will have to wait until I have BOM > > > Dave I'll make sure (probably with some help from Matt) that we get the daughterboard glued into the GNU Radio framework. Between Krys, Bob and others, I'm sure we've got plenty of folks willing to work on the actual GPS signal processing. If you build it, they will come ;-) Eric _______________________________________________ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org http://lists.gnu.org/mailman/listinfo/discuss-gnuradio _______________________________________________ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org http://lists.gnu.org/mailman/listinfo/discuss-gnuradio
