FIELD: radio engineering.
SUBSTANCE: using module of signals processing and control and signal generator, they generate at least one polling signal for transfer to radio frequency identification marker (RFI), of at least one selected object, at the same time polling signal contains code of RFI marker of selected object or alarm code; polling signal is transferred on a carrier frequency, which is identical for RFI markers of all objects, which are subject to detection of coordinates and control, in time gap that corresponds to the selected object, alarm polling signal is identified with a RFI marker of corresponding object by its code or alarm code, response signal of a certain type is generated and sent by mentioned RFI marker as identical for markers of all objects subject to detection of coordinates and control, at least on one specified carrier frequency; mentioned response signal is received with at least three spatially distanced receiving modules with known coordinates, and further specified response signal is processed to obtain coordinates of object.
EFFECT: improved noise immunity and large distance of response channel action and simplification of servicing of large number of objects.
25 cl, 10 dwg
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Authors
Dates
2009-10-27—Published
2007-08-30—Filed