Terahertz radar adaptive aperture BP imaging method based on target scattering characteristics

The invention belongs to the technical field of radar imaging, and particularly relates to a terahertz radar adaptive aperture BP imaging method based on target scattering characteristics. In a terahertz synthetic aperture radar two-dimensional imaging process, original echo energy scattering characteristics are analyzed by azimuth, an optimal aperture division threshold is obtained through iteration based on a maximum entropy criterion, adaptive aperture division is performed on original echo data, and weighted stacking is performed on sub-aperture imaging results to obtain a final imaging result. According to the method, the capability of acquiring detailed information of the target is improved, the imaging effect of the terahertz SAR artificial complex target is effectively improved, and the method is an efficient method for fine imaging of the terahertz SAR artificial target. In addition, the method does not involve complex calculation operation, and the implementation mode is relatively simple. 本发明属于雷达成像