Bistatic inverse synthetic aperture radar (ISAR) is an efficient geometric configuration of ISAR to image targets traveling along radar transmitter's line of sight, but it has the problem of defocusing and distortion because of the time-varying bistatic angle. In this paper, we derive the defocusing term and the distortion term by expanding the bistatic angle using first-order Taylor expansion. In addition, necessary constraints to neglect the defocusing term are provided via point spread function analysis, and a novel method to eliminate distortion based on linked scatterers is proposed. Simulation results validate our theoretical analysis and show the effectiveness of our method.
Bistatic ISAR distortion and defocusing analysis
IEEE Transactions on Aerospace and Electronic Systems ; 52 , 3 ; 1168-1182
01.06.2016
1069844 byte
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
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