A method for the locations of a return channel based on transponder litter

摘要

The present invention relates to a method for the locations of a return movement of the litter based transponder (tr1).According to the invention, the process comprises the steps of sending an unmodulated carrier signal (ts) by a base station (bs1), sending a locating signal (os) by the transponder (tr1) which, by means of phase modulation and backscattering of the of the base station (bs1) transmitted carrier signal (ts) is generated when the transponder (tr1) in a sensitive region of the base station (bs) occurs, and locations of the transponder (tr1) on the basis of the locating signal (os).Use of, for example, in the merchandise management systems thereof.