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Cross range streaks in ISAR images generated via the shooting-and-bouncing ray technique: cause and solutions

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2 Author(s)
Bhalla, R. ; Dept. of Electr. & Comput. Eng., Texas Univ., Austin, TX, USA ; Hao Ling

The low-level “cross-range streaks,” observed in the ISAR images generated by the shooting-and-bouncing ray technique, are investigated. The streaks arise due to angular-scintillation noise in the Xpatch data, and such scintillation occurs due to the finite discretization of the ray-shooting grid. We propose two solutions to solve the streaking problem. The first solution uses spatial averaging to filter out the angular-scintillation noise. The second solution uses the multi-angle signature-extrapolation algorithm to generate the frequency-aspect scattered-field data. The performance and computational efficiency of these solutions are analyzed and presented

Published in:

Antennas and Propagation Magazine, IEEE  (Volume:39 ,  Issue: 2 )

Date of Publication:

Apr 1997

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