雷达是通过接收一定时间间隔内电磁回波成像,它与可见光成像不同。地面高程起伏不仅导致地面景物在不同成像条件下几何分布的畸变,而且引起成像灰度特性分布上的不一致,影响雷达景象匹配定位性能。在分析地面高程起伏和雷达成像模型之间关系的基础上,提出了一种基于垂直投影的雷达实时图像校正方法。试验表明了该方法的有效性。 Radar is imaged by electromagnetic echoes within a certain time interval, which is different from visible light imaging. Ground elevation fluctuation not only leads to the distortion of the geometric distribution of the ground scene under different imaging conditions, but also causes the inconsistencies in the distribution of the imaging gray scale characteristics and affects the matching performance of the radar scene matching. Based on the analysis of the relation between ground elevation fluctuation and radar imaging model, a real-time radar image correction method based on vertical projection is proposed. Experiments show that the method is effective.