Harley Thanks I find another way call hyperbolic location method that is more accurate to locate a cell phone. and what u said is correct, I must first get a phone's communication. Now the easier way what I know is using openbts and usrp build a gsm bts to communicate with cell phone. Am I right?
On Tue, May 25, 2010 at 8:11 PM, Harley Myler <h.my...@lamar.edu> wrote: > > On May 24, 2010, at 10:06 PM, John Wu wrote: > > > Hi all, I am a fresh on usrp and gnuradio, now I want to use them to > support locate a cell phone, and what I know is locate a cell phone need to > use triangulation method. Anyone know if gnuradio contain triangulation > block or any open triangulation algorithm available? > > > > Thanks! > > _______________________________________________ > > Discuss-gnuradio mailing list > > Discuss-gnuradio@gnu.org > > http://lists.gnu.org/mailman/listinfo/discuss-gnuradio > > John, the dilemma you will face in locating a cell phone will be the coding > that it incorporates as it communicates with towers. If you know the signal > that a particular phone emits, or of you can establish communication with > one, then the direction finding should be trivial. I am working on ADF now, > but my interest is in locating the towers, not the phones. > > What you may need to do is set up your GR to act like a tower, establish > comm with a phone and then use an antenna array to determine it's location. > I just recently managed to squeeze out of the Ettus group how to control > something with the GPIO so that I can manipulate an antenna array, so you > are pretty much on your own for anything beyond the example programs in the > existing software. > > I did not understand the youtube popcorn thing. > > > > > CONFIDENTIALITY: Any information contained in this e-mail (including > attachments) is the property of The State of Texas and unauthorized > disclosure or use is prohibited. Sending, receiving or forwarding of > confidential, proprietary and privileged information is prohibited under > Lamar Policy. If you received this e-mail in error, please notify the sender > and delete this e-mail from your system. > >
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