Moving target detection through range cell migration radar

Details Moving target detection through range cell migration radar Moving target detection through range cell migration radar

1990-10-31

1993-08-10

Barron, Jr., Gilberto

Communications: directive radio wave systems and devices (e.g.,

Determining velocity

Combined with determining distance

342162, 342196, G01S 1352, G01S 7295

Patent

active

052353389

ABSTRACT:
Radar signal processor for the detection of fast moving targets having small radar cross-sections. A method and apparatus is used to analyze a target that may travel through many range cells during coherent integration time. By transforming the pulse return data into the spatial frequency domain, range bin migration problems have been solved. The signal to noise ratio is also improved thereby permitting the detection of small targets. The processing consists of three major steps: performing an FFT for each pulse to yield spatial frequency components for each return; performing a special DFT for each spatial frequency yielding constant velocity output for each spatial frequency; and finally performing an inverse FFT to obtain target velocity and position.

REFERENCES:
patent: 4916452 (1990-04-01), Borchert et al.
Geometric Aspects of Long Term Non-Coherent Intergration, Allen et al. (IEEE, vol. 25, No. 5, Sep. 1989).

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