Chinese Academy of Sciences

Da Liang

Yu Wang

Heng Zhang

Yunkai Deng

Kaiyu Liu

Dacheng Liu

Yafeng Chen

Tingzhu Fang

Haoyu Lin

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.

Method and apparatus for space-variance correction imaging of bistatic SAR, device and storage medium

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Beijing, China

Da Liang