激波光学折射和反射效应对激光近程目标探测影响研究

由于飞行器超音速飞行产生的激波，对其上的激光近程探测系统的激光光波传输产生折射和反射效应，引起测距误差和杂波影响。结合光学理论，提出了一种基于激波前后空气密度比的激波折射和反射效应的简洁工程算法，并推导出激波折射效应引起的测距误差公式和激波反射效应引起的杂波功率公式，从宏观角度对上述两种效应进行了仿真计算和分析，从而为激光近程探测系统的研究提供理论依据和方法。

Study of Refraction and Reflection Effect Caused by Shock Wave on Laser Short-range Detection

The shock wave produced by supersonic flight makes the laser wave propagation of a laser short-range detection system on the aircraft emerge the refraction causing ranging error and the reflection causing the clutter. According to optical theory, an engineering algorithm of the refraction and reflection effects of the shock wave based on ratio of air density between front and back of the shock wave was proposed. The formulas of ranging error and clutter power caused by the effects were deduced. The simulation and the analysis were worked out from macro view. The theoretical foundation was provided for the research of laser short-range detection.