Millimeter Wave Radar Azimuth Super-Resolution Method Based on Multi-Frame Reconstruction

Aiming at the problem of low azimuth resolution in traditional millimeter wave radar real-beam imagery, an azimuth super-resolution method based on multi-frame reconstruction is proposed. First, utilizing complementary information between multiple frames, the convex set constraint is constructed by the projection onto convex set (POCS) method. Then, projection correction is performed on high-resolution echo data estimation using azimuth residuals and other constraints between multiple frames, ultimately achieving azimuth super-resolution imaging. On the basis of existing single-frame super-resolution methods, this method fully utilizes the complementary information in multi-frame echo data, and can achieve higher azimuth resolution. We use a real-data set to verify the effectiveness of the proposed method.