| 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(8). |
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| 作者姓名： | 王新彪 李靖 姜景山 |
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| 作者单位： | 中国科学院空间科学与应用研究中心;中国科学院微波遥感技术重点实验室;中国科学院研究生院; |
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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 |
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(8). |
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| Authors: | WANG Xin-biao LI Jing JIANG Jing-shan |
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| Institution: | WANG Xin-biao1,2,3,LI Jing1,JIANG Jing-shan1,2(1.Center for Space Science and Applied Research,Chinese Academy of Sciences,Beijing 100190,China,2.The Key Laboratory of Microwave Remote Sensing,CAS,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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