基于半光程差的天线反射面型面精度检测

周国锋; 李晓星

基于半光程差的天线反射面型面精度检测

北京航空航天大学机械工程及自动化学院, 北京 100191

基金项目: 北航D2025紧缩场研制项目

详细信息

作者简介:
周国锋(1982-),男,湖南浏阳人,博士生,adian@me.buaa.edu.cn.

中图分类号: TN 820; TB 921
计量
- 文章访问数: 3901
- HTML全文浏览量: 132
- PDF下载量: 848
- 被引次数: 0
出版历程
- 收稿日期: 2010-07-08
- 网络出版日期: 2011-06-30

Base on semi-optical path difference of antenna reflector surface accuracy detection

School of Mechanical Engineering and Automation, Beijing University of Aeronautics and Astronautics, Beijing 100191, China

摘要

摘要: 型面拟合最小量的选取是天线面板型面检测中的关键技术之一.天线表面各点半光程差的均方根是衡量天线型面精度的指标.根据圆锥曲面的几何定义及其光学性质,提出了圆锥曲面天线面板半光程差的直接计算方法,给出了基于半光程差的非线性最小二乘曲面拟合算法.以旋转抛物面天线面板为例,通过模拟和实际测量,对比分析了分别选取轴向误差和半光程差作为最小量拟合计算结果.试验验证了选取半光程差作为最小量拟合的算法具有更高的数值计算精度及稳定性.
- 半光程差 /
- 圆锥曲面拟合 /
- 非线性最小二乘 /
- 反射面型面检测
Abstract: The selection of minimum value of surface fitting is one of the key technologies refer to the antenna panel surface detection. The antenna surface root-mean-square of semi-optical path difference is an index of antenna surface accuracy. A direct calculation method of semi-optical path difference (OPD) was presented according to the geometric definition of conic surface and its optical properties. The nonlinear least squares curve fitting algorithm based on the semi-optical path difference was described. Employing a parabolic reflector panel as the sample, through simulation and actual measurements, the fitting results were contrastively analyzed while selected axial deviation and semi-optical path difference as minimum value respectively. The experiments verifying the fitting method based on semi-optical path difference is more precision and stability.
- semi-optical path difference /
- conic surface fitting /
- nonlinear least squares /
- antenna surface detection

HTML全文

参考文献(1)

[1] Anderson L J,Groth L H.Reflector surface deviations in large parabolic antennas [J].IEEE Transactions on Antennas and Propagation,1963,11(2):148-152 [2] Ruze J.Antenna tolerance theory:a review [J].Proceeings of the IEEE,1966,54(4):633-642 [3] 王从思,段宝岩,仇原鹰,等.一种抛物面天线形状误差的合理评价方法[J].上海理工大学学报,2006,28(1):14-18 Wang Congsi,Duan Baoyan, Qiu Yuanying,et al.Improved evaluation for calculating shape errors of parabolic antennas [J].Journal of University of Shanghai for Science and Technology,2006,28(1):14-18(in Chinese) [4] 王从思,段宝岩,仇原鹰.大型天线变形反射面的新拟合方法[J].西安电子科技大学学报,2006,32(6):839-843 Wang Congsi,Duan Baoyan,Qiu Yuanying.A novel method for fitting the distorted reflector of a large antenna [J].Journal of Xidian University,2006,32(6):839-843(in Chinese) [5] 陈继华,李广云.离散点抛物面拟合的算法研究[J].天线技术,2005,35(4):39-43 Chen Jihua,Li Guangyun.Research on discrete points parabolic fitting algorithm [J].Radio Engineering of China,2005,35(4):39-43(in Chinese) [6] Butler B P,Forbes A B,Harris P M.Algorithms for geometric tolerance assessment .Technical Report DITC 228/94,1994 [7] 张曦,胡春华,陈五一.二次曲面拟合与拟合参数不确定度分析[J].北京航空航天大学学报,2006,32(9):1091-1095 Zhang Xi,Hu Chunhua,Chen Wuyi.Quadratic surface fitting and uncertainty analysis of fitting parameters [J].Journal of Beijing University of Aeronautics and Astronautics,2006,32(9):1091-1095(in Chinese) [8] 周贤宾,陈连峰,李东升.反射器夹层面板精密成形原理[J].北京航空航天大学学报,2004,30(4):296-300 Zhou Xianbin,Chen Lianfeng,Li Dongsheng.Principle of precision forming for sandwich panel of Large antenna reflector[J].Journal of Beijing University of Aeronautics and Astronautics,2004,30(4):296-300(in Chinese)

施引文献

资源附件(0)

访问统计