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| 台址内部设备瞬态干扰引起的110 m射电望远镜近场耦合计算方法 | |
| Alternative Title | Calculation method of near-field coupling of a 110-m radio telescope caused by transient radiation interference of equipment within the observatory site |
彭涣欢1; 邹棋1; 肖培1; 刘萌瑶1; 蔡明辉2 ; 刘奇2; 李高升1
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| 2024 | |
| Source Publication | 中国科学:物理学 力学 天文学
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| ISSN | 1674-7275 |
| Volume | 54Issue:1Pages:219510 |
| Contribution Rank | 2 |
| Abstract | 射电望远镜具有高灵敏度和高分辨率的特性,台址内部微弱的电磁干扰会影响其工作状态,增加天文观测难度.本文针对110 m射电望远镜台址内部瞬态辐射干扰引起的近场耦合问题,提出了一种基于偶极子近似和时域物理光学的混合计算方法.首先对台址内部设备瞬态干扰源进行分析,利用偶极子天线理论对近场辐射源进行分析与建模,结合时域物理光学法分析并计算了台址内部干扰源对射电望远镜天线口径面近场的电磁耦合特性,最后结合Feko全波算法验证本文方法的有效性.本文方法为110 m射电望远镜台址内部辐射干扰对天文观测的影响分析提供了理论支撑. |
| Other Abstract | Radio telescopes are renowned for their high sensitivity and resolution. However, subtle electromagnetic interference from internal sources within the observatory site can considerably disrupt their operational state, thereby aggravating the challenges associated with astronomical observations. This study addresses the issue of near-field coupling induced by transient radiation interference from internal sources within the observatory site of the 110-m radio telescope. For this purpose, a hybrid calculation method based on dipole approximation and time-domain physical optics is proposed. The analysis commences with a meticulous examination of transient radiation interference emanating from internal sources at the observatory site. Leveraging the principles of dipole antenna theory, the near-field radiation sources are analyzed and accurately modeled. By integrating the time-domain physical optics approach, the electromagnetic coupling characteristics of the internal sources of radiation interference on the near-field aperture plane of the radio telescope are comprehensively analyzed and quantified. Finally, the efficacy of the proposed method is validated using the FEKO full-wave algorithm. The proposed method serves as a theoretical foundation for analyzing the influence of interference from internal sources of radiation at the observatory site on the astronomical observations of the 110-m radio telescope |
| Keyword | 射电望远镜 瞬态干扰 近场耦合 物理光学法 |
| URL | 查看原文 |
| Indexed By | CSCD ; 中文核心期刊要目总览 |
| Language | 中文 |
| WOS ID | CSCD:7658835 |
| CSCD ID | CSCD:7658835 |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.xao.ac.cn/handle/45760611-7/7614 |
| Collection | 射电天文研究室_微波技术实验室 |
| Corresponding Author | 李高升 |
| Affiliation | 1.湖南大学电气与信息工程学院，长沙 410082; 2.中国科学院新疆天文台，乌鲁木齐 830011 |
| Recommended Citation GB/T 7714 | 彭涣欢,邹棋,肖培,等. 台址内部设备瞬态干扰引起的110 m射电望远镜近场耦合计算方法[J]. 中国科学:物理学 力学 天文学,2024,54(1):219510. |
| APA | 彭涣欢.,邹棋.,肖培.,刘萌瑶.,蔡明辉.,...&李高升.(2024).台址内部设备瞬态干扰引起的110 m射电望远镜近场耦合计算方法.中国科学:物理学 力学 天文学,54(1),219510. |
| MLA | 彭涣欢,et al."台址内部设备瞬态干扰引起的110 m射电望远镜近场耦合计算方法".中国科学:物理学 力学 天文学 54.1(2024):219510. |
| Files in This Item: | ||||||
| File Name/Size | DocType | Version | Access | License | ||
| 彭涣欢-2024-台址内部设备瞬态干扰引（2167KB） | 期刊论文 | 出版稿 | 开放获取 | CC BY-NC-SA | View Application Full Text | |
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