利用光束后向散射提高激光跟踪发射精度方法

为提高激光跟踪发射系统激光发射指向精度，提出了一种通过测量发射激光后向散射光尖来修正激光发射指向误差的方法。在介绍系统光机结构及后向散射相关理论的基础上详细论述了光尖探测距离与视差的关系，根据天气情况和长期测量经验获得良好天气、中等天气和较差天气三种天气状况下光尖探测距离，进一步得出三种天气状况下视差修正量。在良好天气状况下，利用预定空间轨迹误差修正方式进行实验验证，对比光束后向散射法与靶板测量法所测得的激光发射指向精度，在预定的空间轨迹上两者测量误差为2.5，实验证明，利用光束后向散射法可以大大提高激光发射的指向精度。

Improvement method of laser pointing accuracy for the tracking and lasing system by backward scattering

In order to correct laser beam pointing error for the high accuracy tracking and lasing system, a laser beam tip measurement method of laser backward scattering was developed. Firstly, the opto-mechanical structure and the backward scattering theory were introduced, and the relationship between detect distance of laser beam tip and binocular parallax was analysed. Secondly, based on the long time observation, the detect distances of laser beam tip in good weather condition, medium weather condition and bad weather condition were obtained respectively. Finally, the validating experiment of laser beam tip measurement method by targeting method in predetermined orbit was carried out in good weather condition. The difference of two methods was 2.5, which indicates that laser beam pointing accuracy could be improved greatly by the laser beam tip measurement method.