电子学报 ›› 2013, Vol. 41 ›› Issue (6): 1084-1087.DOI: 10.3969/j.issn.0372-2112.2013.06.007

• 学术论文 • 上一篇    下一篇

全极化微波辐射计数字化引入误差分析

陆浩1,2, 王振占1   

  1. 1. 中国科学院空间科学与应用研究中心, 北京 100190;
    2. 中国科学院研究生院, 北京 100049
  • 收稿日期:2012-02-07 修回日期:2012-08-27 出版日期:2013-06-25
    • 作者简介:
    • 陆 浩 男,生于1988年,安徽省利辛县人,博士研究生,主要从事高速数字相关器、极化微波辐射计等方面的研究. E-mail:luhao0408@126.com王振占 男,生于1969年,河北省青龙县人,研究员,博士生导师.中国科学院"百人计划"引进人才.主要从事微波遥感新技术及应用技术研究.
    • 基金资助:
    • 中国科学院"百人计划"择优支持专项经费

The Error Analysis of Digital Technology in Polarimetric Microwave Radiometer

LU Hao1,2, WANG Zhen-zhan1   

  1. 1. Center for Space Science and Applied Research, Chinese Academy of Sciences, Beijing 100190, China;
    2. Graduate University of Chinese Academy of Sciences, Beijing 100049, China
  • Received:2012-02-07 Revised:2012-08-27 Online:2013-06-25 Published:2013-06-25
    • Supported by:
    • Specail Fund for Merit-based Support of 100 Talents Program of The Chinese Academy of Sciences

摘要: 全极化微波辐射计是一种用于海洋表面风场测量的新型被动微波遥感器.数字相关器是全极化辐射计的核心部件.数字相关器的应用相对于模拟相关辐射计具有可配置、集成度高和易于控制的特点.同时,数字化技术会给辐射计带来量化误差和相位抖动误差.具体的误差分析验证了全极化微波辐射计中数字化的可行性.文中详细分析了定量误差,并根据实际工程应用说明了多比特数字化带来的误差可以在系统整体误差中忽略.

关键词: 量化误差, 相位抖动, 数字技术, 全极化微波辐射计

Abstract: Polarimetric microwave radiometer is a new passive microwave remote sensor used to measure ocean surface wind field.Digital correlator is the core component of polarimetric radiometer.Compared to analog correlator,the digital correlator radiometer has the configurable,highly integrated and easy-to-control features/At the same time,digital technology will bring radiometer quantization error and phase jitter.Detailed error analysis is the way to verify the feasibility of digital technology in fully polarimetric microwave radiometer.The quantitative error is analyzed.According to practical application,the error caused by multi-bit digital technology can be ignored in the overall system.

Key words: quantization error, phase jitter, digital technology, fully polarimetric microwave radiometer

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