I would qualify Matt's statement a bit --- The TOS RSSI is certainly not a sufficient estimator to just plug the value from a single packet and get meaningful distance out of it ... but it's not totally useless either.
-R On 6 Apr 2004, Matt Welsh wrote: > As Joe pointed out, TOS_MsgPtr->strength has the RSSI value for the > received packet. Unfortunately, you cannot really use RSSI to tell you > anything about the distance between two motes. However, we have a system > that maintains signatures of RSSI from multiple fixed beacons to > localize a mobile node down to about 1m accuracy: > > http://www.eecs.harvard.edu/~konrad/projects/motetrack/ > > We plan a release after the Sensys deadline. > > Matt > > On Tue, 2004-04-06 at 18:47, [EMAIL PROTECTED] wrote: > > hi,all, > > I am a student in MTU, and my name is xiaoning shan > > I want to use recieved RF power to get the distance information using mica > > board. but I did not see any functions in CC1000Control. > > is there anybody can tell me? Or some other ways to obtain the distance > > between two mica motes with the basic sensor board? > > > > Thanks a lot. > > > > > > > > _______________________________________________ > > Tinyos-users mailing list > > [EMAIL PROTECTED] > > http://mail.Millennium.Berkeley.EDU/mailman/listinfo/tinyos-users > > _______________________________________________ > Tinyos-users mailing list > [EMAIL PROTECTED] > http://mail.Millennium.Berkeley.EDU/mailman/listinfo/tinyos-users > _______________________________________________ Tinyos-users mailing list [EMAIL PROTECTED] http://mail.Millennium.Berkeley.EDU/mailman/listinfo/tinyos-users
