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遥感技术与应用  2015, Vol. 30 Issue (4): 744-756    DOI: 10.11873/j.issn.1004-0323.2015.4.0744
图像与数据处理     
23.8 GHz数字相关型全极化微波辐射计的定标及其影响分析
王振占1,2,谢莹1,2,3,陆浩1,2,董帅1,2,3,李彬1,2
(1.中国科学院国家空间中心微波遥感技术重点实验室,北京 100190;
2.中国科学院国家空间中心,北京 100190;3.中国科学院大学,北京 100049 )
Calibration and Impact Analysis of 23.8 GHz Digital\|correlation Full-polarimetric Microwave Radiometer
Wang Zhenzhan1,2,Xie Ying1,2,3,Lu Hao1,2,Dong Shuai1,2,3,Li Bin1,2
(1.Key Laboratory of Microwave Remote Sensing Technology,
Chinese Academy of Sciences,Beijing 100190,China;
2.Center for Space Science and Applied Research,Chinese Academy of Sciences,Beijing 100190,China;
3.University of Chinese Academy of Sciences,Beijing 100049,China)
 全文: PDF(6958 KB)  
摘要:

为实现全极化微波辐射计对海面风场的高精度测量,不但需要特殊的全极化定标基准,同时需要高稳定性的接收机系统。恒温控制是提高系统稳定性简单有效的途径之一。基于23.8 GHz的数字相关型全极化微波辐射计,考虑温度对于定标的影响,采用特殊的温控方案,设计出一套恒温控制系统,使辐射计工作在一种稳定的状态下。实验结果表明:通过恒温控制可以使辐射计工作维持在一种稳定的状态,从而可以简化定标过程,延长定标周期,同时保证定标精度的要求。

关键词: 全极化微波辐射计定标周期灵敏度恒温控制    
Abstract:

Temperature control is a simple and effective way to improve the system stability of the total\|power\|type microwave radiometer,the full\|polarimetric microwave radiometer can achieve high precision measurement for retrieving the sea surface wind vector by the method.Using a 23.8 GHz digital\|correlation full\|polarimetric microwave radiometer,considering the effects of temperature on calibration of the polarimeter and adopting a special temperature control scheme,a constant temperature control system was designed to make the radiometer work stably.The experimental results show that the constant temperature control scheme can make the radiometer work in a stable state which can simplify the calibration process,make the calibration cycle longer and ensure the accuracy requirement of the calibration.

Key words: Full-polarimetric microwave radiometer    Calibration cycle    Sensitivity    Temperature control
收稿日期: 2014-12-04 出版日期: 2015-09-22
:  TP 732.1  
基金资助:

微波辐射计定标研究(Y3C016AG60)。

通讯作者: 谢莹(1989- ),女,辽宁锦州人,硕士研究生,主要从事温度对微波辐射计系统性能影响方面的研究。Email:nkxieying@gmail.com。    
作者简介: 王振占(1969- ),男,河北青龙人,研究员,主要从事微波遥感新技术及应用技术研究,重点包括:全极化微波辐射测量技术、定标和应用基础研究,微波辐射计海洋大气参数的反演应用研究,微波遥感器的定标/检验研究以及太赫兹大气探测机理研究等。Email: wangzhenzhan@mirslab.cn。
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引用本文:

王振占,谢莹,陆浩,董帅,李彬. 23.8 GHz数字相关型全极化微波辐射计的定标及其影响分析[J]. 遥感技术与应用, 2015, 30(4): 744-756.

Wang Zhenzhan,Xie Ying,Lu Hao,Dong Shuai,Li Bin. Calibration and Impact Analysis of 23.8 GHz Digital\|correlation Full-polarimetric Microwave Radiometer. Remote Sensing Technology and Application, 2015, 30(4): 744-756.

链接本文:

http://www.rsta.ac.cn/CN/10.11873/j.issn.1004-0323.2015.4.0744        http://www.rsta.ac.cn/CN/Y2015/V30/I4/744

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