ISAR imaging radar system

Details ISAR imaging radar system ISAR imaging radar system

1991-11-26

1993-02-02

Sotomayor, John B.

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

Synthetic aperture radar

342195, G01S 1390

Patent

active

051841339

ABSTRACT:
A method for removing range migration effects that produce doppler smearing in Inverse Synthetic Aperture Radar (ISAR) system (20) image of moving target (50) first generates a synthetic aperture radar image in the zero doppler cells from the target by summing a plurality of ISAR radar data points. Next, the method and system compensate each of the data points by a factor representing the effect of non-zero doppler frequency shift in said data points. Further, the method and system compensate the generated ISAR image for non-zero doppler frequency shift from the target using the compensated data points. This method and system may be used in an ISAR system doppler processor to reduce or eliminate doppler smearing in ISAR images.

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