PASSIVE TRANSCEIVER Russian patent published in 2001 - IPC

FIELD: radar detection and ranging, applicable for transmission of friend-or-foe signals and identification of radar surveillance objects, applicable in air traffic control systems, systems of identification of remote objects and in other fields. SUBSTANCE: the passive transceiver has an antenna, series- connected detector, resolver and an identification code generator, whose second input is connected to the second output of the power source, whose first output of the power source, whose first output is connected to the second input of the resolver, modulator, whose output is connected to the detector input, the first group of inputs of the modulator is connected to the group of outputs of the identification code generator, and the second combined input-output is connected to the antenna input. EFFECT: enhanced noise immunity of identification information due to transmission of reply signals at the carrier frequency differing from the interrogation signal frequency. 4 dwg