COHERENT SUB-APERTURE PROCESSING TECHNIQUES FOR SYNTHETIC APERTURE RADAR

Authors
  1. Wu, K.H.
  2. Vant, M.R.
Corporate Authors
Communications Research Centre, Ottawa ONT (CAN)
Abstract
Coherent sub-aperture techniques for processing synthetic aperture radar (SAR) signals are described. The techniques involve partitioning the full aperture data, in either the time or the frequency domain. Each partition or sub-aperture is then processed independently by the application of a conventional matched filter, or the equivalent. The low resolution images formed by this process are then coherently recombined to form a full resolution image. Such a processing scheme has the advantage of high computational efficiency and provides the capability for the compensation of low frequency spurious motions, even when the SAR is operating in a highly squinted, high resolution imaging situation. A detailed description of two coherent sub-aperture techniques namely, the multi-look matched filtering approach and the step transform, are presented. TRUNCATED
Report Number
1368 —
Date of publication
15 Jan 1984
Number of Pages
106
DSTKIM No
85-02895
CANDIS No
47687
Format(s):
Hardcopy;Originator's fiche received by DSIS

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