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| 7毫米波段接收机冷热负载二次反射结构物理光学仿真 | |
| Alternative Title | Physical-Optical simulation of secondary reflection Structure of 7mm Wave receiver with cold and hot load |
王凯 ; 宁云炜; 王洋; 闫浩; 曹亮
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| 2019-07-01 | |
| Source Publication | 微波学报
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| ISSN | 1005-6122 |
| Volume | 35Issue:增刊Pages:189-193 |
| Contribution Rank | 1 |
| Abstract | 射电天文强度校准的目的是将设备接收到射电源的强度响应等效转换为温度标尺，结合天线参数并最终将其转换为绝对的流量密度。常规校准采用冷热负载法。文中基于冷热负毂法校准原理，结合7mm制冷接收机杜瓦内部结构，提出将冷负载放置于杜瓦内部，通过两面反射镜将其辐射二次反射至接收机馈源内部，同理再通过两面反射镜将杜瓦外部的热负载辐射二次反射至接收机馈源内部，记录相关数据从而完成校准。对冷热负载二次反射结构进行物理光学仿真，远场方向图仿真结果验证了该设计的可行性，后续工作需结合实际馈源对双反射面做进一步优化设计。 |
| Other Abstract | The purpose of radio astronomical amplitude calibration is to convert the amplitude response of the received radio source into a temperature scale, and finally convert it into an absolute flux density combined with the antenna parameters. The conventional calibration method is cold and hot load method. Based on the calibration principle of the cold and hot load method and the internal structure of the 7 mm cryogenic receiver dewar, this paper proposes that the cold load be placed inside the dewar, and the radiation of the cold load is reflected to the feed of the receiver by two mirrors. In the same way, the radiation of the hot load outside the dewar is reflected to the feed of the receiver by two mirrors, and the relevant data are recorded to complete the calibration. The feasibility of the design is verified by the physical optics simulation of the cold and hot load secondary reflector structure from the far field pattern simulation results. Further optimization design of the secondary reflection structure is needed in the follow-up work in combination with the actual feed. |
| Keyword | 射电天文 接收机 强度校准 冷热负毂法 远场 |
| Indexed By | 中文核心期刊要目总览 |
| Language | 中文 |
| Document Type | 期刊论文 |
| Identifier | http://ir.xao.ac.cn/handle/45760611-7/3344 |
| Collection | 射电天文研究室_微波技术实验室 110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3：超宽带接收机与高速数字终端 |
| Affiliation | 中国科学院新疆天文台, 乌鲁木齐830011 |
| First Author Affilication | Xinjiang Astronomical Observatory, Chinese Academy of Sciences |
| Recommended Citation GB/T 7714 | 王凯,宁云炜,王洋,等. 7毫米波段接收机冷热负载二次反射结构物理光学仿真[J]. 微波学报,2019,35(增刊):189-193. |
| APA | 王凯,宁云炜,王洋,闫浩,&曹亮.(2019).7毫米波段接收机冷热负载二次反射结构物理光学仿真.微波学报,35(增刊),189-193. |
| MLA | 王凯,et al."7毫米波段接收机冷热负载二次反射结构物理光学仿真".微波学报 35.增刊(2019):189-193. |
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| File Name/Size | DocType | Version | Access | License | ||
| 王凯-2019-7毫米波段接收机冷热负载（1406KB） | 期刊论文 | 出版稿 | 开放获取 | CC BY-NC-SA | View Application Full Text | |
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