Re: [Discuss-gnuradio] Query on GPS

2005-03-25 Thread David Bengtson
GLONASS spec's are available on-line from Russia. Google found the site, and the spec is a decently sized Word document. The GPS L1 Freq is a CDMA signal at 1575.42 MHz, with a signal BW of~3 MHz. GLONASS is FDMA, with 25 500 kHz channels from 1589 to 1610 MHz. I suspect that you could design a

Re: [Discuss-gnuradio] Query on GPS

2005-03-25 Thread David Bengtson
ng 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: R

Re: [Discuss-gnuradio] Query on GPS

2005-03-23 Thread Jesus Cea
Krzysztof Kamieniecki wrote: This is the GPS standard http://www.navcen.uscg.gov/gps/geninfo/ICD-GPS-200C%20with%20IRNs%2012345.pdf There are more links to interesting GPS documents at http://comsec.com/wiki?GlobalPositioningSystem Which is part of the GNURadio Wiki http://comsec.com/wiki Excellent

Re: [Discuss-gnuradio] Query on GPS

2005-03-22 Thread Krzysztof Kamieniecki
This is the GPS standard http://www.navcen.uscg.gov/gps/geninfo/ICD-GPS-200C%20with%20IRNs%2012345.pdf There are more links to interesting GPS documents at http://comsec.com/wiki?GlobalPositioningSystem Which is part of the GNURadio Wiki http://comsec.com/wiki Quoting Jesus Cea <[EMAIL PROTECTED

Re: [Discuss-gnuradio] Query on GPS

2005-03-22 Thread Jesus Cea
Krzysztof Kamieniecki wrote: Right now it looks like my software does to the demodulation and calculation of position into xyz coordinates, I'm still looking for enough raw data to be able to test the full position calculation. Hi. I'm a newbie in this list, but I'm a telecom engineer and have ex

Re: [Discuss-gnuradio] Query on GPS

2005-03-21 Thread Robert W McGwier
I will be supporting both endeavors personally in the sense that I want the wideband front end for various purposes and will just use filtering to narrow its response. If necessary, I will lower its noise temperature and filter in the same unit to make it work for GPS. I am interested in using t

Re: [Discuss-gnuradio] Query on GPS

2005-03-20 Thread David Bengtson
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 w

Re: [Discuss-gnuradio] Query on GPS

2005-03-20 Thread Robert Cicconetti
On Sun, 20 Mar 2005 21:33:21 -, Robert McGwier <[EMAIL PROTECTED]> wrote: > 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-

RE: [Discuss-gnuradio] Query on GPS

2005-03-20 Thread Robert McGwier
i; 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'

Re: [Discuss-gnuradio] Query on GPS

2005-03-20 Thread Eric Blossom
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 d

Re: [Discuss-gnuradio] Query on GPS

2005-03-20 Thread Krzysztof Kamieniecki
Please excuse the spelling errors, I'm using webmail today. Right now it looks like my software does to the demodulation and calculation of position into xyz coordinates, I'm still looking for enough raw data to be able to test the full position calculation. Major todos: -Integration with GNURad

Re: [Discuss-gnuradio] Query on GPS

2005-03-20 Thread David Bengtson
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 in

Re: [Discuss-gnuradio] Query on GPS

2005-03-17 Thread Krzysztof Kamieniecki
I love replying to myself. I updated my website with a plot showing the results of a correlator doing a brute force search thru frequency and delay on the real raw data. Krzysztof Kamieniecki wrote: I am, slowly but surely. I plan on using the USRP. I recently got some raw data from a person asso

Re: [Discuss-gnuradio] Query on GPS

2005-03-17 Thread Krzysztof Kamieniecki
I am, slowly but surely. I plan on using the USRP. I recently got some raw data from a person associated with GPStk if you are interested. Right now David Bengtson is working on a daughter card. http://www.keystoneradio.com/GnuGPS.html Other links of interest My page: http://www.kamieniecki.com/kr