电子学报 ›› 2021, Vol. 49 ›› Issue (2): 380-386.DOI: 10.12263/DZXB.20190815

• 科研通信 • 上一篇    下一篇

高光谱微波辐射计宽带高速数字系统设计

罗阳锦1,2, 张升伟1, 陆浩1   

  1. 1. 中国科学院国家空间科学中心微波遥感技术重点实验室, 北京 100190;
    2. 中国科学院大学, 北京 100190
  • 收稿日期:2019-07-16 修回日期:2020-05-11 出版日期:2021-02-25 发布日期:2021-02-25
  • 作者简介:罗阳锦 女,1992年出生,四川人.本科就读于兰州理工大学,于2015获得学士学位,现阶段为中国科学院国家空间科学中心博士研究生.主要研究领域为被动微波遥感探测技术与应用.E-mail:luoyangjin123456@163.com;张升伟 男,1963年出生,山东人.理学硕士,博士生导师.2001年至2014年为中国科学院空间科学与技术研究中心研究员,主持和参加国家重大科研项目十余项.目前研究领域为被动微波遥感探测机理、技术与应用研究,先进微波遥感器系统设计与研制.
  • 基金资助:
    国家重点研发计划(No.2018YFB0504900,No.2018YFB0504902)

The System Design of Wide Frequency Band and High Speed Digital System of Hyperspectral Microwave Radiometer

LUO Yang-jin1,2, ZHANG Sheng-wei1, LU Hao1   

  1. 1. The Key Laboratory of Microwave Remote Sensing, National Space Science Center, Chinese Academy of Sciences, Beijing 100190, China;
    2. University of Chinese Academy of Sciences, Beijing 100190 China
  • Received:2019-07-16 Revised:2020-05-11 Online:2021-02-25 Published:2021-02-25

摘要: 高光谱微波辐射计是基于频谱分析技术的精细谱段微波辐射计,通过增加探测通道实现高垂直分辨率大气探测,解决传统微波辐射计通道数少,频谱分辨率低的问题.该系统采用高性能模数转换器(Analog-to-Digital Converter,ADC)实现对模拟输入信号进行10Gsps采样,8bit量化,并基于高性能现场可编程门阵列(Field Programming Gate Array,FPGA)芯片获取输入信号的功率谱.文章详细介绍了宽带高速数字系统设计、器件选型和测试方法,给出了测试结果,分析表明硬件系统设计符合设计要求.

 

关键词: 谱分析技术, 高光谱微波辐射计, 功率谱, 高性能模数转换器, 现场可编程门阵列

Abstract: Hyperspectral microwave radiometer is based on the technological analysis of spectrum.It is able to increase vertical resolution of measurement of atmosphere by increasing frequency measurement channels.The back-end system of hyperspectral microwave radiometer sampled analogical signal with 4GHz frequency band at 10Gsps by using high-performance analog-to-digital converter (ADC).The output digital signal from ADC was dealt with on field programming gate array (FPGA) by implementing the algorithm of power spectrum.The detailed subsystem design,the ways to choose components meeting the design requirements and the testing methods were presented.In addition,some basic test results and analysis results were presented.

Key words: technology of spectrum analysis, hyperspectral microwave radiometer, power spectrum, high-performance analog-to digital converter (ADC), field programming gate array (FPGA)

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