一种面向运载火箭自动对接的三维测量场构建方法

Construction Method of Three-Dimensional Measurement Field for Automatic Docking of Launch Vehicles

旋转激光自动经纬仪系统(R-LATs)是一种基于前方角度交汇的分布式大尺寸测量系统。各激光扫描基站的布局位置直接影响着测量区域内的测量精度和应用性能。从测量区域的测量不确定度量化着手,利用蒙特卡罗法获取各点的测量不确定度,以测量区域的最大不确定度作为主要优化目标,利用差分进化算法自动寻优,更简单有效地实现了面向运载火箭自动对接的R-LATs系统布站优化。最后进行了运载火箭对接测量场的实际应用验证。应用结果表明:该方法能有效优化激光扫描基站布局,提高系统测量精度,满足实际应用需求。

Rotary laser automatic theodolite system(R-LATs)is a distributed large-scale measurement system based on the intersection of front angles.The layout position of each laser scanning base station directly affects the measurement accuracy and application performance in the measurement area.In this paper,the measurement uncertainty of the measurement area is quantified.The Monte Carlo method is used to obtain the measurement uncertainty of each point,and the maximum uncertainty of the measurement area is taken as the main optimization objective.The differential evolution algorithm is used to automatically optimize,which makes the R-LATs system layout optimization for the automatic docking of launch vehicles be realized more simply and effectively.Finally,the practical application verification of the docking measurement field of launch vehicles is carried out,and the application result shows that the method can effectively optimize the layout of laser scanning base station,improve the measurement accuracy of the system,and meet the actual application requirements.