该文研究了激光目标反射后的偏振特性，给出了目标反射后的一些物理参数，如后向反射能量、偏振度等。为区分初始偏振辐射和非偏振辐射，讨论了垂直和水平偏振探测系统及激光发射系统，使从镜面目标反射的初始偏振信号能够复原，同时又排除了非偏振状态的随机偏振辐射。 In this paper, the polarization characteristics of a laser target after reflection are studied, and some physical parameters after the target is reflected are given, such as the energy of retroreflection and the degree of polarization. In order to distinguish between initial polarized radiation and non-polarized radiation, the vertical and horizontal polarization detection systems and the laser emission system are discussed, so that the initial polarization signal reflected from the mirror target can be recovered and at the same time, the random polarization radiation in the non-polarization state is excluded.