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全极化微波辐射计系统中高速数字相关器设计
Alternative TitleDesign of High-Speed Digital Correlator in Fully Polarimetric Microwave Radiometer
陆浩; 王振占; 刘憬怡; 姜景山; luhao0408@126.com
Department微波遥感部
Source Publication电子学报
2011
Volume39Issue:12Pages:2831-2835
ISSN0372-2112
Language中文
Keyword全极化微波辐射计 数字相关器
Abstract海面风场直接影响大气与大洋环流相互作用,是研究海流运动规律的必要条件。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。文中详细介绍了一种新型数字相关器的设计和实现。两片高速A/D转换器采样四路信号并通过XILINX公司新一代的FPGA-Vertex5作相关运算。同时本文给出了数字相关器的测试结果。相关器采样率360MHz,8bit量化,测试有效位数在7。2bit以上。100MHz和150MHz信号输入下,测量值与理论值之间的相关系数在0。9999999以上。系统功耗11。3W。
Other AbstractFully polarimetric microwave radiometer is a new type of passive microwave sensor for measuring ocean wind vector.Digital correlation technology is used inside it to get all the four Stokes parameters of ocean emission in this paper.Digital correlator is the main part of the fully polarimetric radiometer.In the paper,design of a novel digital correlator is presented.Two high-speed,dual A/D converters are used to sample four signals,and the sampling results are operated in FPGA-Vertex5 to make both self-and cross-correlation calculations.The testing results of the correlator are given.The sampling rate is 360 MHz with effective number of bits more than 7.2 bits in 8 bits resolution.For both 100 MHz and 150 MHz input,the correlation coefficient between the measurements and their theoretical results is more than 0.9999999.The whole power of digital correlator is 11.3 W.
Indexed ByEI ; CSCD
Funding Project中国科学院空间科学与应用研究中心
Citation statistics
Document Type期刊论文
Identifierhttp://ir.nssc.ac.cn/handle/122/3449
Collection微波遥感部
Corresponding Authorluhao0408@126.com
Recommended Citation
GB/T 7714
陆浩,王振占,刘憬怡,等. 全极化微波辐射计系统中高速数字相关器设计[J]. 电子学报,2011,39(12):2831-2835.
APA 陆浩,王振占,刘憬怡,姜景山,&luhao0408@126.com.(2011).全极化微波辐射计系统中高速数字相关器设计.电子学报,39(12),2831-2835.
MLA 陆浩,et al."全极化微波辐射计系统中高速数字相关器设计".电子学报 39.12(2011):2831-2835.
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