Synthetic aperture radar processing with polar formatted subapertures [electronic resource].

Published:: Washington, D.C. : United States. Dept. of Energy, 1994.
Oak Ridge, Tenn. : Distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy.
Physical Description:: 6 pages : digital, PDF file
Additional Creators:: Sandia National Laboratories
United States. Department of Energy
United States. Department of Energy. Office of Scientific and Technical Information
Access Online:: www.osti.gov

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Summary:

Synthetic Aperture Radar (SAR) uses the motion of a small real antenna to synthesize a larger aperture, and thereby achieve very fine azimuth resolution. Efficient SAR image formation requires modelling the radar echo and compensating (focusing) the delay and phase for various positions in the target scene. Polar-Format processing is one successful algorithm developed to process large scenes at fine resolutions, but is still limited, especially at resolutions near a wavelength. This paper shows how using tiers of subapertures can overcome the limitations of Polar-Format processing and increase the focused scene size substantially while using only efficient vector multiplies and Fast Fourier Transforms.

Subject(s):

Other Instrumentation

Note:

Published through SciTech Connect.
10/01/1994.
"sand--94-1375c"
" conf-9410156--2"
"DE95001830"
28. annual Asilomar conference on signals, systems, and computers,Pacific Grove, CA (United States),31 Oct - 2 Nov 1994.
Doerry, A.W.

Funding Information:

AC04-94AL85000

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