Efficient autofocus method for swath SAR

Details Efficient autofocus method for swath SAR Efficient autofocus method for swath SAR

2006-12-05

2006-12-05

Tarcza, Thomas H. (Department: 3662)

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

Synthetic aperture radar

C342S02500R, C342S02500R, C342S161000, C342S162000, C342S196000

Reexamination Certificate

active

07145498

ABSTRACT:
A moving radar generates a search mode synthetic aperture image of a patch from periodic pulse returns reflected from the patch. The patch is imaged from radar returns derived from two or more overlapping arrays. A strong scatterer is located within each array, then the data from each array is motion compensated with respect to the motion of the radar and the strong scatterer. The motion compensated results for each array are autofocused to derive a phase error for each array. Using the phase error for each array, a connected phase error estimate is computed, added to the phase error of each array to minimize the differences between phases in the overlap between arrays insuring that there is no or minimal phase discontinuity in the overlap region between arrays. Avoiding phase discontinuity yields a clear SAR image of the combination of arrays rendering the patch.

REFERENCES:
patent: 5184134 (1993-02-01), Niho et al.
patent: 6603424 (2003-08-01), Abatzoglou
patent: 6670907 (2003-12-01), Cho
patent: 6781541 (2004-08-01), Cho
patent: 6873285 (2005-03-01), Carrara et al.
patent: 2002/0093880 (2002-07-01), Nakamura

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