电子学报2011，Vol.39Issue(12)：2831-2835,5.
全极化微波辐射计系统中高速数字相关器设计
Design of High-Speed Digital Correlator in Fully Polarimetric Microwave Radiometer
陆浩 1王振占 2刘憬怡 1姜景山1
作者信息
- 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
- 折叠
摘要
Abstract
Fully 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 ISO 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.关键词
全极化微波辐射计/数字相关器/FPGA/ADCKey words
fully polarimetric microwave radiometer/ digital correlator /FPGA/ ADC分类
信息技术与安全科学引用本文复制引用
陆浩,王振占,刘憬怡,姜景山..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):2831-2835,5.
