基于相控阵馈线的大型天线反射器变形测量与修正方法

IF 1.8 4区物理与天体物理 Q3 ASTRONOMY & ASTROPHYSICS

Research in Astronomy and Astrophysics Pub Date : 2024-03-19 DOI:10.1088/1674-4527/ad2ac2

Zan Wang, De-Qing Kong, Hong-Bo Zhang, Yan Su, Xin-Ying Zhu, Cong-Si Wang, Yu-Chen Liu

{"title":"基于相控阵馈线的大型天线反射器变形测量与修正方法","authors":"Zan Wang, De-Qing Kong, Hong-Bo Zhang, Yan Su, Xin-Ying Zhu, Cong-Si Wang, Yu-Chen Liu","doi":"10.1088/1674-4527/ad2ac2","DOIUrl":null,"url":null,"abstract":"To solve the problem of time-consuming measurement and correction of large antennas’ reflector deformation, a new microwave holography methodology based on a Phased Array Feed (PAF) is proposed. Starting from the known expression of receiving signals in microwave holography, the theory of PAF holography is derived through Geometrical Optics. Reflector deformation, as well as pointing deviation and subreflector offset, can be calculated out by applying the derived equations. A measurement and correction system based on PAF holography is depicted, and two kinds of measurement methods are illustrated. The proposed measurement methodology is verified by numerical simulation, and its measurement error is analyzed. The results indicate that our proposed methodology is feasible, especially for Cassegrain antennas.","PeriodicalId":54494,"journal":{"name":"Research in Astronomy and Astrophysics","volume":"29 1","pages":""},"PeriodicalIF":1.8000,"publicationDate":"2024-03-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Reflector Deformation Measurement and Correction Methodology of Large Antenna Based on Phased Array Feed\",\"authors\":\"Zan Wang, De-Qing Kong, Hong-Bo Zhang, Yan Su, Xin-Ying Zhu, Cong-Si Wang, Yu-Chen Liu\",\"doi\":\"10.1088/1674-4527/ad2ac2\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"To solve the problem of time-consuming measurement and correction of large antennas’ reflector deformation, a new microwave holography methodology based on a Phased Array Feed (PAF) is proposed. Starting from the known expression of receiving signals in microwave holography, the theory of PAF holography is derived through Geometrical Optics. Reflector deformation, as well as pointing deviation and subreflector offset, can be calculated out by applying the derived equations. A measurement and correction system based on PAF holography is depicted, and two kinds of measurement methods are illustrated. The proposed measurement methodology is verified by numerical simulation, and its measurement error is analyzed. The results indicate that our proposed methodology is feasible, especially for Cassegrain antennas.\",\"PeriodicalId\":54494,\"journal\":{\"name\":\"Research in Astronomy and Astrophysics\",\"volume\":\"29 1\",\"pages\":\"\"},\"PeriodicalIF\":1.8000,\"publicationDate\":\"2024-03-19\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Research in Astronomy and Astrophysics\",\"FirstCategoryId\":\"101\",\"ListUrlMain\":\"https://doi.org/10.1088/1674-4527/ad2ac2\",\"RegionNum\":4,\"RegionCategory\":\"物理与天体物理\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q3\",\"JCRName\":\"ASTRONOMY & ASTROPHYSICS\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Research in Astronomy and Astrophysics","FirstCategoryId":"101","ListUrlMain":"https://doi.org/10.1088/1674-4527/ad2ac2","RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"ASTRONOMY & ASTROPHYSICS","Score":null,"Total":0}

引用次数: 0

摘要

为了解决大型天线反射器变形测量和校正耗时的问题，提出了一种基于相控阵馈电（PAF）的新型微波全息方法。从微波全息中接收信号的已知表达式出发，通过几何光学推导出 PAF 全息理论。应用推导出的方程可以计算出反射器变形以及指向偏差和子反射器偏移。描述了基于 PAF 全息技术的测量和校正系统，并说明了两种测量方法。通过数值模拟验证了所提出的测量方法，并分析了其测量误差。结果表明，我们提出的方法是可行的，尤其适用于卡塞格伦天线。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

查看原文本刊更多论文

Reflector Deformation Measurement and Correction Methodology of Large Antenna Based on Phased Array Feed

To solve the problem of time-consuming measurement and correction of large antennas’ reflector deformation, a new microwave holography methodology based on a Phased Array Feed (PAF) is proposed. Starting from the known expression of receiving signals in microwave holography, the theory of PAF holography is derived through Geometrical Optics. Reflector deformation, as well as pointing deviation and subreflector offset, can be calculated out by applying the derived equations. A measurement and correction system based on PAF holography is depicted, and two kinds of measurement methods are illustrated. The proposed measurement methodology is verified by numerical simulation, and its measurement error is analyzed. The results indicate that our proposed methodology is feasible, especially for Cassegrain antennas.

求助全文

通过发布文献求助，成功后即可免费获取论文全文。去求助

来源期刊

Research in Astronomy and Astrophysics 地学天文-天文与天体物理

CiteScore

3.20

自引率

16.70%

发文量

2599

审稿时长

6.0 months

期刊介绍： Research in Astronomy and Astrophysics (RAA) is an international journal publishing original research papers and reviews across all branches of astronomy and astrophysics, with a particular interest in the following topics: -large-scale structure of universe formation and evolution of galaxies- high-energy and cataclysmic processes in astrophysics- formation and evolution of stars- astrogeodynamics- solar magnetic activity and heliogeospace environments- dynamics of celestial bodies in the solar system and artificial bodies- space observation and exploration- new astronomical techniques and methods