Side lobe suppressing unit for a pulse radar apparatus

Details Side lobe suppressing unit for a pulse radar apparatus Side lobe suppressing unit for a pulse radar apparatus

G - Physics

01

S

343/62

G01S 7/28 (2006.01)

Patent

CA 1191586

Abstract In a pulse radar apparatus the receiver comprises a main trans- mission channel connected to a directional antenna and an inter- ference canceller connected to said channel for selecting target returns obtained through the major lobe of the antenna radiation pattern. The canceller contains an auxiliary transmission channel connected to an omnidirectional antenna for the inter- mediate-frequency detection of target returns and of signals composed of noise and/or continuous-wave interference signals; a subtraction unit; and a phase- and amplitude-compensating network having two circuit arrangements, one for the in-phase output signal and one for the quadrature output signal of the auxiliary transmission channel for generating output signals for the subtraction unit. Each circuit arrangement consists of a first mixer connected to the subtraction unit and the auxiliary transmission channel, a filter connected to the first mixer, and a second mixer connected to the filter and the auxiliary transmission channel.

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