| 全极化微波辐射计加法型模拟复相关器研究 |
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| 引用本文： | 王新彪,李靖,姜景山. 全极化微波辐射计加法型模拟复相关器研究[J]. 宇航学报, 2011, 32(8): 1840-1847. DOI: 10.3873/j.issn.1000-1328.2011.08.028 |
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| 作者姓名： | 王新彪 李靖 姜景山 |
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| 作者单位： | 1.中国科学院空间科学与应用研究中心，北京 100190; 2.中国科学院微波遥感技术重点实验室，北京 100190; 3.中国科学院研究生院，北京 100049 |
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| 基金项目： | 收稿日期：20100608;修回日期：20110530 |
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| 摘 要： | 全极化微波辐射计的核心部分是复相关器。介绍了一种加法型模拟复相关器，它采用混合耦合器构成移相网络，在中频将电磁波信号相位调整到特定状态，从而实现了用加法思想获取全部Stokes参量。分别研制了分布参数和集总参数的移相网络，对它们测量并进行比较。最后对加法型模拟复相关器进行了整体测试，给出了噪声源测量下的相位反演能力测试。结果表明加法型模拟复相关器具有较好的极化测量性能。
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| 关 键 词： | 全极化微波辐射计 加法型模拟相关器 混合耦合器 |
| 收稿时间： | 2010-06-08 |
Study on Additive Analog Correlator Used in Fully Polarimetric Radiometer |
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| WANG Xin-biao,,,LI Jing,JIANG Jing-shan. Study on Additive Analog Correlator Used in Fully Polarimetric Radiometer[J]. Journal of Astronautics, 2011, 32(8): 1840-1847. DOI: 10.3873/j.issn.1000-1328.2011.08.028 |
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| Authors: | WANG Xin-biao LI Jing JIANG Jing-shan |
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| Affiliation: | 1.Center for Space Science and Applied Research, Chinese Academy of Sciences, Beijing 100190, China; 2. The Key Laboratory of Microwave Remote Sensing, CAS, Beijing 100190, China; 3. Graduate University of Chinese Academy of Sciences, Beijing 100049, China |
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| Abstract: | Fully polarimetric radiometer's key component is the complex correlator.An additive analog complex correlator is represented in this paper.The phase-shifting network constituted by hybrid coupler is used to adjust the electromagnetic phase to a specific state in IF,and all Stokes parameters are obtained by using the additive thought.Both distributed and lumped parameters of phase-shift networks are developed respectively,their measurement and comparison are performed too.At last,the overall test for the add... |
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| Keywords: | Fully polarimetric radiometer Additive analog correlator Hybrid coupler |
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