Communications: directive radio wave systems and devices (e.g. – Synthetic aperture radar
Patent
1988-05-18
1997-03-11
Sotomayor, John B.
Communications: directive radio wave systems and devices (e.g.,
Synthetic aperture radar
G01S 1390
Patent
active
056106106
ABSTRACT:
An inverse synthetic array radar (ISAR) system provides for improving the resolution of an ISAR image by providing compensation for non-uniformity in the magnitude of the angular velocity of a rotating target as the target rotates to generate the synthetic-aperture-angle, and enables use of a larger synthetic-aperture angle, without compromising ISAR image quality with respect to smear. The preferred embodiment records sampled data signals to generate a collected-data matrix indexed in each of two dimensions on the basis of uniform increments of time, and performs data processing to produce a translated data matrix indexed in a dimension on the basis of uniform increments of synthetic-aperture angle. Further processing of the translated data matrix produces data in a buffer for controlling a display device for the ISAR image.
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Chen Ernest
Hudson Ralph E.
Nussbaum Howard S.
Alkov Leonard A.
Denson-Low Wanda K.
Hughes Electronics
Sotomayor John B.
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