Receiving circuit

Details Receiving circuit Receiving circuit

H - Electricity

04

B

325/122

H04B 1/16 (2006.01) G01S 3/74 (2006.01) G01S 7/02 (2006.01)

Patent

CA 1243360

ABSTRACT OF DISCLOSURE In a receiving circuit a control circuit and a direction finding circuit generate a digitally encoded "descriptor" which characterises pulses of r.f. radiation received in a particular azimuthal direction and having a particular carrier frequency. The "descriptor" may be compared with data stored in a processing circuit representing r.f. pulses emitted by sources which have already been detected or which are known to exist. To reduce the workload on processing circuit a number of emulator circuits generate pulse patterns which simulate pulses produced by known sources of little inherent interest. If the received pulses match the simulated pulses a gate inhibits control circuit.

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