United States of America As Represented by the Secretary of the Air Force

William L Melvin, Jr

Michael C Wicks

Pinyuen Chen

A signal processing system applies space-time adaptive processing ('STAP') to an airborne surveillance Doppler radar comprised of a single-channel, electronically scanned antenna. The STAP substantially improves signal-to-interference-plus-noise ratio ('SINR') by synthetically creating angular degrees of freedom, thereby improving the detection of weak targets.

Adaptive elevational scan processor statement of government interest

A signal processing system applies space-time adaptive processing ('STAP') to an airborne surveillance Doppler radar comprised of a single-channel, rotating antenna. The STAP substantially improves signal-to-interference-plus-noise ratio ('SINR'), thereby improving the detection of weak targets.

Adaptive post-doppler sequential beam processor

Apparatus and method for improving detection of targets in a radar system that employs adaptive filtering. A nonhomogeneity detector eliminates nonhomogeneous signals from the population of signals received. An adaptive filter weight controller estimates covariance matrices from only homogenous signals. Thus the apparatus and method improves the probability of detecting the presence or absence of a target at the same time that it decreases the probability of a false alarm by improving the performance of an adaptive filter. Though developed for airborne radar, the apparatus and method may be applied to the processing of any image.

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Rome, NY, United States of America

William L Melvin, Jr