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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。
In order to improve the laser pointing accuracy of the laser tracking transmitter system, a method of correcting the laser pointing error by measuring the emission laser backscattering point is proposed. Based on the introduction of the theory of optical system and the theory of backscattering, the relationship between the detection distance of light tip and the parallax is discussed in detail. According to the weather conditions and the long-term measurement experience, good weather, moderate weather and poor weather are under three weather conditions Sharp detection range, further three parallax correction under the weather conditions. In good weather conditions, the use of scheduled space trajectory error correction experimental verification, comparison of beam backscattering method and the target plate measured laser emission pointing accuracy, in the predetermined space trajectory measurement error between the two 2.5 " Experiments show that the use of beam backscattering method can greatly improve the pointing accuracy of laser emission.