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遥感技术与应用  2012, Vol. 27 Issue (2): 305-309    DOI: 10.11873/j.issn.1004-0323.2012.2.305
传感器研究     
全极化微波辐射计中5 GHz带宽数字相关器设计
陆 浩1,2,王振占1
(1.中国科学院微波遥感技术重点实验室,北京 100190;2.中国科学院研究生院,北京 100049)
Design of 5 GHz Bandwidth Digital Correlator in Fully Polarimetric Microwave Radiometer
Lu Hao1,2,Wang Zhenzhan1
(1.Key Laboratory of Microwave Remote Senging,Chinese Academy of Sciences,Beijing 100190,China;2.Graduate University of Chinese Academy of Sciences,Beijing 100049,China)
 全文: PDF(1804 KB)  
摘要:

为测得反演海洋风场所需的全部4个Stokes参数,全极化微波辐射计采用多路相关技术,对水平和垂直极化信号进行自相关和互相关处理,是一种全新的微波遥感系统。数字相关器是全极化辐射计的核心部件。详细介绍了一种高速新型数字相关器的设计。4片高速A/D转换器采样4路信号并外接多路复用模块实现高速数据流的降速,然后通过Xilinx公司新一代的FPGA\|Vertex5芯片作相关运算,将相关结果实时传输至上位机。提出的新型数字相关器可以实现系统最高5 GHz带宽的数据处理。

关键词: 全极化微波辐射计数字相关器数据降速FPGA    
Abstract:

To get the four Stokes vectors and ocean surface fields,fully polarimetric microwave radiometer can adopt multi-channel digital correlation technology including the self-correlation and cross-correlation between the horizontal and vertical polarization signals.Fully polarimetric microwave radiometer is a new-type of microwave remote sensors.Digital correlation is the core part of the system.A novel digital correlation is introduced in this study.Four high-speed A/D converters are used to sample the signals of four channels with the results translated to multiplexers for decelerating.The latest Field-Programmable Gate Array (FPGA)-Virtex5 fabricated by Xilinx has been used to complete the correlation,meanwhile,the results  are translated to PC in time.The new-type of correlator can process data with up to 5 GHz bandwidth.

Key words: Fully polarimetric microwave radiometer    Digital correlator    Data decelerating    FPGA
收稿日期: 2011-05-23 出版日期: 2013-01-23
:  TP 732  
基金资助:

中国科学院“百人计划”择优支持经费资助。

作者简介: 陆 浩(1988-),男,安微利辛人,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。Email:luhao0408@126.com。
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引用本文:

陆 浩,王振占. 全极化微波辐射计中5 GHz带宽数字相关器设计[J]. 遥感技术与应用, 2012, 27(2): 305-309.

Lu Hao,Wang Zhenzhan. Design of 5 GHz Bandwidth Digital Correlator in Fully Polarimetric Microwave Radiometer. Remote Sensing Technology and Application, 2012, 27(2): 305-309.

链接本文:

http://www.rsta.ac.cn/CN/10.11873/j.issn.1004-0323.2012.2.305        http://www.rsta.ac.cn/CN/Y2012/V27/I2/305

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