基于GNSS-R的海面风场监测系统研究  

Study of Ocean Wind-field Monitoring System Based on GNSS-R

作　　者：路勇[1,2] 杨东凯[1] 熊华钢[1] 李伟强[1] 

机构地区：[1]北京航空航天大学电子信息工程学院,北京市100083 [2]哈尔滨工程大学动力与能源工程学院,哈尔滨市150001

出　　处：《武汉大学学报（信息科学版）》2009年第4期470-473,503,共5页Geomatics and Information Science of Wuhan University

基　　金：国家863计划资助项目(2007AA12Z340,2006AA09Z137)

摘　　要：为全面获取海面粗糙度信息,实现导航卫星反射信号高精度风场反演,在给出海浪谱及散射信号相关功率模型基础上,通过对海面时延一维、时延/多普勒二维信息采样方式进行分析和仿真,验证了散射信号相关功率Z-V模型。仿真结果表明,时延/多普勒二维采样方式能全面反映海面粗糙度信息。以此为理论依据设计完成了基于二维信息获取的多普勒延迟映射接收机,阐述了接收机的硬件组成及工作原理,分析了多普勒串行码片并行的数据处理模式,为导航卫星反射信号的海面散射功率获取提供了可靠方式。In order to get the information of ocean roughness and the precision result of windfield retrieval, The Delay one- dimension sampling and the Delay/Doppler two- dimension sampling was analyzed and simulated based on model of Spectrum of Ocean Waves and scatter correlate power, the Z-V model of was validated. The simulation result show that the Delay/Doppler two- dimension sampling was comprehensive for describing the information of ocean roughness; the design of Doppler Delay Mapping Receiver was accomplished based on two- dimension sampling theory. The configuration of hardware, work principle was expatiated. The data processing mode of Doppler serial/ Code delay parallel was analyzed. So the reasonable way of getting scatter correlate power was present.

关 键 词：导航卫星 海面散射 二维采样 多普勒延迟映射接收机 

分 类 号：P228.41[天文地球—大地测量学与测量工程] P229.2[天文地球—测绘科学与技术]