5 November 1996 Ultrawideband SAR processing with the Range Migration Algorithm and the ImSyn processor
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Abstract
The ImSynTM Processor is an optoelectronic signal processor developed by Essex Corporation to accelerate coherent imaging processes. This paper focuses on the application of the ImSyn Processor to SAR imaging where severe range differential curvature is present. This occurs in SAR systems imaging large scenes with fine resolution, foliage penetrating (FOPEN) radar and ground penetrating radar. Application of the range migration algorithm removes the differential range curvature but results in a non- uniform or warped frequency space. The ImSyn processor operates directly on the frequency data permitting a discrete Fourier transform in warped frequency space without data interpolation. Both the range migration algorithm and the standard polar formatting algorithm benefit from the increased speed and resolution available from the ImSyn processor. A discussion of the ImSyn processor, the range migration algorithm and an example of a FOPEN image processed on our prototype system are presented.
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Louis C. Phillips, Louis C. Phillips, Laurence A. Eichel, Laurence A. Eichel, Stephen M. Evanko, Stephen M. Evanko, } "Ultrawideband SAR processing with the Range Migration Algorithm and the ImSyn processor", Proc. SPIE 2845, Radar Processing, Technology, and Applications, (5 November 1996); doi: 10.1117/12.257224; https://doi.org/10.1117/12.257224
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