Synthetic aperture radar clutter reduction system

Details Synthetic aperture radar clutter reduction system Synthetic aperture radar clutter reduction system

1992-07-17

1996-08-13

Sotomayor, John B.

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

Synthetic aperture radar

342161, 342162, G01S 1390

Patent

active

055460844

ABSTRACT:
A method, and corresponding apparatus, for deriving clutter-reduced images of the ocean surface in synthetic aperture radar (SAR) systems. An estimate of ocean surface parameters is first made and subsequently updated iteratively, to provide a reliable model of a selected patch of the ocean as it existed when a series of conventional spotlight mode SAR images were obtained. Based on the estimated ocean model, and on models of ocean wave behavior, of radar scattering behavior, and of the SAR acquisition system, predicted SAR images can be generated, and compared with the measured SAR images, and clutter-reduced images can be produced as a result. In addition to the clutter-reduced images, the method and apparatus of the invention produce an accurate estimate of ocean surface data, and can be used in a reliable approach for detecting hard targets on the ocean.

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