Azimuth multichannel techniques are promising in the high-resolution and wide-swath (HRWS) synthetic aperture radar (SAR) system. However, in practical engineering, errors among channels will significantly impact the reconstruction of multi-channel echo data, resulting in a smeared SAR image. To address this issue, a novel algorithm is proposed in this article, which based on the statistical treatment of characteristic clusters. In this algorithm, separately channel imaging is carried out firstly, then the image i…