On Thursday 31 August 2006 10:52 am, hemendra jain wrote: > Dear Rony, Sorry to interrupt but.. The person has to know his distance and bearing relative to the radio beacons. This information has to be computed by the reciever and requires expensive electronics - gps without weak signal rf frontend - the transmitter cannot provide this info. since the beacons will have to be omnidirectional he is going to pick up reflected signals killing any chance of getting useful postioning info. But it can definetly provide useful info about the locality and should be useful for just that. For a visually handicapped person even a gps wont work - error of 15 mtrs is common - he will be in extreme danger trying to use these as guidance system or even as a navigational aid. Regarding shops using it as a medium radio clutter will kill any cahnce of finding use ful info.
-- Rgds JTD -- http://mm.glug-bom.org/mailman/listinfo/linuxers
