大型高指向精度反射面天线轨道不平度对指向精度的影响研究
Alternative TitleThe research on the influence of large high pointing accuracy of reflector antenna track irregularity to the pointing
吴江; 王博
2015-10-27
Conference Name2015年中国电子学会第二十一届青年学术年会
Source Publication2015年中国电子学会第二十一届青年学术年会会议论文集
Pages644
Conference Date2015年10月26-27日
Conference Place陕西西安
Project Number2015CB857102
Abstract本文根据奇台110 m 口径射电望远镜高指向精度特点,在现有天线指向模型的基础上,推导了轨道误差源(轨道不平度)对指向精度影响的关系模型,基于功率谱函数傅里叶级数系数归并法,建立了天线轨道不平度数学模型,针对国外某完全焊接式50m 天线,轨道水平度测量数据,通过实验数值仿真,通过查表法补偿轨道不平度造成天线指向误差,使俯仰角误差精度提高了1.5 角秒,对高指向精度天线实现的研究提供了有力支持。
Funding Organization国家重点基础研究发展计划(国家973计划) ; 中国电子学会;陕西省科学技术协会
Other AbstractIn this paper, from the high pointing accuracy of QiTai 110 m diameter radio telescope characteristics, a pointing model was deduced between the pointing error and track flatness. Based on power spectrum function and Fourier series coefficients merge method, we established the mathematical model of antenna track roughness. Through the experiment of a foreign 50 m antenna completely welded track, antenna elevation Angle error was improved by 1.5 seconds which provided strong support to achieve high pointing accuracy of antenna research.
Keyword轨道不平度 指向精度 指向模型 射电望远镜
Indexed By其他
Language中文
Document Type会议论文
Identifierhttp://ir.xao.ac.cn/handle/45760611-7/1586
Collection110米口径全可动射电望远镜(QTT)_110米大口径全可动射电望远镜关键技术研究(973项目)_课题2:复杂环境下天线结构保型与高精度指向控制
Affiliation西安电子科技大学电子装备结构设计教育部重点实验室,陕西西安 710071
Recommended Citation
GB/T 7714
吴江,王博. 大型高指向精度反射面天线轨道不平度对指向精度的影响研究[C],2015:644.
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