In bistatic polar format processing, the planar wavefront assumption is utilized to simplify imaging processing. However, the resulted wavefront curvature error will result in severe smearing and geometry distortion in radar imagery. In this article, a generalized model of the 2-D wavefront curvature error in bistatic polar format algorithm (PFA) imagery under an arbitrary flight path is deduced and analyzed. Based on the derived model, a space-variant refocus processing is proposed to realize wavefront curvature correction. In this method, the reference invariant compensation, and range- and azimuth-variant filtering operations are applied sequentially. After using the space-variant compensation, the effective focused scene size is extended and the refocused quality of bistatic PFA imagery is improved significantly. Finally, numerical simulations verify the validity of our method.


    Access

    Check access

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    Two-Dimensional Phase Error Analysis and Compensation in Bistatic PFA Imagery Under Arbitrary Trajectories


    Contributors:
    Wang, Xin (author) / Zhou, Zhiqing (author)

    Published in:

    Publication date :

    2025-08-01


    Size :

    5241311 byte




    Type of media :

    Article (Journal)


    Type of material :

    Electronic Resource


    Language :

    English



    Optimal Baseline Design and Error Compensation for Bistatic Spaceborne InSAR

    Wang, W. / European Space Agency | British Library Conference Proceedings | 2006


    Motion error compensation method based on unmanned aerial vehicle bistatic SAR system

    LIU FEIFENG / WANG ZHANZE / ZHANG SHUYAO et al. | European Patent Office | 2023

    Free access

    Phase Error Calculation for Fast Time-Domain Bistatic SAR Algorithms

    Vu, V. T. / Sjogren, T. K. / Pettersson, M. I. | IEEE | 2013


    Radar System Calibration with Bistatic Sidelobe Compensation

    TALAI ARMIN / BURZA RAFAL MICHAL / KALLI SASHI PRAVEEN | European Patent Office | 2023

    Free access

    Radar system calibration with bistatic sidelobe compensation

    TALAI ARMIN / BURZA RAFAL MICHAL / KALLI SASHI PRAVEEN | European Patent Office | 2024

    Free access