Geographic gain time control

Details Geographic gain time control Geographic gain time control

G - Physics

01

S

343/17

G01S 13/74 (2006.01) G01S 13/78 (2006.01)

Patent

CA 1115814

GEOGRAPHIC GAIN TIME CONTROL Abstract of the Disclosure Apparatus is provided for modifying a conventional target locating system in which targets respond to an in- terrogation signal by transmitting a reply, and the target location is deduced from the azimuth from which a reply is received and the delay between the interrogation signal and the reply. The improvement includes a controllable attenu- ator coupling the receiving antenna to the targe locating system which i5 controlled to selectively discriminate against selected range cells at selected azimuths. In a preferred embodiment, digital circuitry is relied upon to control the attenuator, and the identification of the range cells to be discriminated against is stored in a digital memory.

298054

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