大型天线面板形变快速检测方法和精度分析  

Rapid Inspection Method and Accuracy Analysis of Large Antenna Panel Deformation

作　　者：付连波 刘建军[1,2] 任鑫 严韦[1,2] 孔德庆 陈王丽[1] 黄海 高兴烨[1] FU Lianbo;LIU Jianjun;REN Xin;YAN Wei;KONG Deqing;CHEN Wangli;HUANG Hai;GAO Xingye(National Astronomical Observatories,Key Laboratory of Lunar and Deep Space Exploration,Chinese Academy of Sciences,Beijing 100101,China;University of Chinese Academy of Science,Beijing 100049,China)

机构地区：[1]中国科学院国家天文台中国科学院月球与深空探测重点实验室,北京100101 [2]中国科学院大学,北京100049

出　　处：《光子学报》2022年第6期79-90,共12页Acta Photonica Sinica

基　　金：中国科学院重点部署项目(No.ZDBS‐SSW‐TLCOO1);国家自然科学基金(No.11803056);中国科学院太空应用重点实验室开放基金(No.LSU‐2016‐05‐3)。

摘　　要：大型天线面板在使用的过程中受到环境及自身重力的影响,不可避免会发生形变,对天线性能产生影响。针对大型天线面板形变的快速动态检测需求,设计了基于高精度三维激光扫描仪的天线面板形变测量方案。采用拟合抛物面的算法进行点云数据配准,统计学和曲面拟合算法进行滤波和天线面板形变分析,通过测量、分析处理天线面板点云数据,获得了70 m天线面板形变信息,实现了高效率、高精度和自动化的大型天线面板形变检测。With the rapid development of China's planetary exploration project,the communication requirements between spacecraft and ground are getting higher and higher,the antenna aperture is getting bigger and the antenna panel structure is more complex.Large antenna use process,by the temperature,wind,frost,rain,snow and other natural factors,as well as the role of their own gravity,with the passage of time,the antenna structure will inevitably deformation.On the other hand,with the change of antenna pitch angle,the antenna panel will be deformed by gravity.In order to meet the requirements of fast adjustment of antenna face shape and antenna performance analysis for engineering tasks,it is very important to obtain antenna shape variables with high efficiency and high accuracy.This paper adopts the scheme of high precision 3D laser scanner to measure the antenna panel deformation,and constructs a large antenna panel deformation dynamic detection system.And it was applied to the largest fully movable 70 m antenna in Asia at Tianjin Wuqing Station,which was constructed by China's Tianqin-1 Mars Exploration Project.By measuring,analyzing and processing the antenna panel point cloud data,the 70 m antenna panel deformation information was obtained.According to the characteristics of the point cloud data of antenna panel,we adopt the fitting paraboloid specific algorithm for point cloud data alignment to realize the alignment between the point cloud data of theoretical model and actual measured point cloud data,and achieve high efficiency and high accuracy alignment after many falls.The statistical algorithm removes the discrete point cloud data,and the surface fitting algorithm removes the point cloud number data of antenna structure.Finally,the filtering of antenna panel point cloud data and antenna panel deformation analysis are realized,which realizes the high-efficiency,high-precision and automated large antenna panel deformation detection.The data of the theoretical model of the antenna panel is constructed as a grid,an

关 键 词：大型天线 形变分析 快速检测 三维激光扫描仪 点云数据处理 精度分析 

分 类 号：TN82[电子电信—信息与通信工程]