在实际应用中 ,高空目标接收天线单位面积接受的激光功率是一个及其重要的参量 ,而这一参量的大小与许多因素有关。推导了该参量与光源的位置、激光束与高空目标接收天线的夹角、大气损耗系数、高空目标出入境的角度等因素之间的关系。通过数学模型的建立 ,求出了高空目标表面有效光强的表达式 ,并利用这一表达式给出了高空目标表面处激光功率随时间的变化规律。同时给出了有效强度的极值和高空目标出、入境角度的求解方法 In practical applications, the laser power per unit area received by a high-altitude target receiving antenna is an important parameter, and the size of this parameter is related to many factors. The relationship between the parameters and the position of the light source, the angle between the laser beam and the target receiving antenna at high altitude, the coefficient of atmospheric loss, and the angle of entry and exit of the target at high altitude are deduced. Through the establishment of the mathematical model, the expression of the effective light intensity at the surface of the target at high altitude is obtained and the variation law of the laser power at the altitude target surface with time is given by using this expression. At the same time, the method of solving the extrema of the effective intensity and the goal of entering and leaving the high altitude is given