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2013-05-13
A New Conical-Trajectory Polar Format Algorithm for Spotlight Bistatic SAR
By
Progress In Electromagnetics Research, Vol. 139, 611-626, 2013
Abstract
The Polar Format Algorithm (PFA) is suitable for spotlight synthetic aperture radar (SAR) image focusing either in monostatic or bistatic cases. The classic linear-trajectory PFA complete data correction in wavenumber domain, converting data from the polar format to the rectangular format. However, the two-dimension processing (either using interpolation or chirp-z transform) introduces heavy computational load, which limits its real-time applications. This study presents a conical-trajectory PFA for bistatic SAR, in which the transmitter and receiver are designed to fly on conical surfaces, to simplify image formation procedures via eliminating the necessity of range processing. Moreover, the conical-trajectory PFA provides a space-invariant range resolution to simplify the SAR image comprehension. A spotlight forward-looking bistatic missile guidance application was simulated for the algorithm validation and performance analysis.
Citation
Yan Wang, Jingwen Li, Bing Sun, Jie Chen, and Huaping Xu, "A New Conical-Trajectory Polar Format Algorithm for Spotlight Bistatic SAR," Progress In Electromagnetics Research, Vol. 139, 611-626, 2013.
doi:10.2528/PIER13031907
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