Fast velocity estimation method for moving targets based on complex SAR image

The Journal of Engineering

Meng Lin¹  Chunsheng Li²  Na Pu² 

[1] Beijing Institute of Remote Sensing Information;School of Electronics and Information Engineering, Beihang University;

关键词: filtering theory;    radar imaging;    synthetic aperture radar;    remote sensing by radar;    fast velocity estimation method;    moving targets;    complex SAR image;    fast estimation;    ship velocity;    space-borne synthetic aperture radar;    filtered images;    cross-track velocity;    SAR complex image;   

DOI  :  10.1049/joe.2019.0306

来源: DOAJ

【 摘 要 】

Fast estimation of ship velocity remains a significant gap in ocean applications despite the increasing interest in space-borne synthetic aperture radar (SAR). This study proposed a fast velocity estimation method for moving targets based on complex SAR image. Here, the authors first applied several defocusing filters to the imagining results, estimating the along-track velocity of all moving targets by discerning the differences in the maximum of the filtered images. They then derived the cross-track velocity based on Doppler centroid drift. The results showed that the proposed method is effective in real TerraSAR-X dataset and is able to estimate velocity for moving targets in SAR complex image.

【 授权许可】

Unknown