Pulse radar apparatus

Details Pulse radar apparatus Pulse radar apparatus

G - Physics

01

S

343/36

G01S 13/20 (2006.01) G01S 7/292 (2006.01) G01S 13/22 (2006.01) G01S 13/532 (2006.01)

Patent

CA 1246194

Abstract Described is a pulse radar apparatus having a repetition period containing m wobbles. The pulse radar apparatus is provided with: a transmitting an receiving unit (2), whereby the received target echoes are sampled and digitised; an n-point DFT processing unit (3); a threshold circuit (4); and a cluster combiner circuit (5) comprising means to form a cluster covering one single target using the signals obtained from the threshold circuit (4). Due to the wobbles, additional information arises in the DFT spectra: From the range, azimuth, local maximum values of the DFT spectrum and the associated output channel number of the DFT processing unit (3), a classification unit (6) determines whether a target is a multiple-time-around target. The classification unit (6) is also able to determine the target doppler frequency, even if this frequency exceeds the average pulse reptition frequency.

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