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METHOD AND APPARATUS FOR SPACE-VARIANCE CORRECTION IMAGING OF BISTATIC SAR, DEVICE AND STORAGE MEDIUM

机译:用于虚拟SAR,装置和存储介质的空间方差校正成像的方法和装置

摘要

A method for space-variance correction imaging of BiSAR includes: motion parameters corresponding to a target point in an equivalent monostatic mode are calculated using a first motion trajectory, a second motion trajectory and an imaging parameter for focusing a radar echo signal, the target point at least including a center point of an imaging scene; azimuth Doppler center bias correction is performed on the radar echo signal by using the motion parameters corresponding to the center point; uniform and residual range cell migration correction is performed on a corrected signal, range blocking is performed, and range space-variance phase errors are corrected block by block; azimuth blocking is performed, and a corresponding number of filters are constructed for filtering processing; and inverse Doppler center bias correction is further performed to obtain a final imaging result graph.
机译:用于B角质的空间方差校正成像方法包括:使用第一运动轨迹,第二运动轨迹和成像参数来计算与等效单个模式中的目标点对应的运动参数,用于聚焦雷达回波信号,目标点 至少包括成像场景的中心点; 通过使用对应于中心点的运动参数对雷达回波信号执行方位角多普勒中心偏置校正; 在校正信号上执行均匀和残留的细胞迁移校正,执行范围阻塞,并且通过块校正范围空间 - 方差相位误差; 执行方位角阻塞,并构造相应数量的滤波器以进行过滤处理; 进一步执行逆多普勒中心偏置校正以获得最终的成像结果图。

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