A NEW CONICAL-TRAJECTORY POLAR FORMAT ALGORITHM FOR SPOTLIGHT BISTATIC SAR | Zendy

Yan Wang | Zendy; Jingwen Li | Zendy; Bing Sun | Zendy; Jie Chen | Zendy; Huaping Xu | Zendy

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A NEW CONICAL-TRAJECTORY POLAR FORMAT ALGORITHM FOR SPOTLIGHT BISTATIC SAR

Author(s) -

Yan Wang,

Jingwen Li,

Bing Sun,

Jie Chen,

Huaping Xu

Publication year - 2013

Publication title -

electromagnetic waves

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.437

H-Index - 89

eISSN - 1559-8985

pISSN - 1070-4698

DOI - 10.2528/pier13031907

Subject(s) - trajectory , conical surface , polar , bistatic radar , computer science , algorithm , remote sensing , geology , physics , mathematics , radar , radar imaging , telecommunications , geometry , astronomy

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 ∞y 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.

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