Thank you so much for your answer Mark, I will have a look at those hardware-dependent interfaces and I will keep you informed if I do any progress.
Best Regards Mark Proctor escribió: > > 1) Timing probably accurate enough, you would have to measure > nanoseconds even with out processing at the ends. > I guess you could try measuring signal strength but that will depend > almost as much on the environment as on distance. > > 2) I think there are are different interfaces for different hardware > try googling CC2420Packet and CC2420PacketC > > > Date: Thu, 26 Nov 2009 12:44:20 +0100 > > From: [email protected] > > To: [email protected] > > Subject: [Tinyos-help] Distance estimation > > > > Dear all, > > > > I wanted to ask a couple questions that are aimed at the same end. The > > objective is to be able to localize mobile sensors when the come in the > > hearing range of another sensor, for instance, the base station. This > > is somehow intended for indoor location tracking. Then my questions are > > the following > > > > > > 1) Is it possible to use TinyOS in order to estimate (with a low error, > > ie. ~1 meter) the distance between two communicating nodes? My idea is > > using round trip times but I don't know how accurate this could be due > > to the processing time of the nodes. > > > > > > 2) Is it possible to reduce the transmission power of sensor nodes so > > that only a node close can receive the signal? I thought this could > > possibly be done with the LowPowerListening interface, but having a > > quick look at the interface I only saw methods related to the duty cycle. > > > > Any comments, suggestions or experiences are welcome > > > > -- > > Ruben Rios > > _______________________________________________ > > Tinyos-help mailing list > > [email protected] > > https://www.millennium.berkeley.edu/cgi-bin/mailman/listinfo/tinyos-help > > ------------------------------------------------------------------------ > Get a great deal on Windows 7 and see how it works the way you want. See > the Windows 7 offers now. <http://go.microsoft.com/?linkid=9691813> > > > ------------------------------------------------------------------------ > > _______________________________________________ > Tinyos-help mailing list > [email protected] > https://www.millennium.berkeley.edu/cgi-bin/mailman/listinfo/tinyos-help -- Ruben Rios _______________________________________________ Tinyos-help mailing list [email protected] https://www.millennium.berkeley.edu/cgi-bin/mailman/listinfo/tinyos-help
