微波雷达海洋回波多普勒频谱的数值仿真  

Numerical Simulation of Doppler Spectrum of Sea Echo for Microwave Radar

作　　者：陈泽宗[1] 金燕[1] 陈曦[1] 范林刚[1] 

机构地区：[1]武汉大学电子信息学院,武汉市珞珈山430072

出　　处：《武汉大学学报（信息科学版）》2013年第9期1048-1051,共4页Geomatics and Information Science of Wuhan University

基　　金：国家海洋公益性行业科研专项重大资助项目(201205032);中央高校基本科研业务费专项资金资助项目(2012212020203)

摘　　要：研究了微波与海面相互作用的散射机理,在Plant等人研究成果的基础上对多普勒频谱仿真模型进行改进和完善。根据Bragg散射原理、复合表面理论和线性波理论,引入不同极化机制下的NRCS,给出多普勒频谱的谱型、幅度和时域变化特征,比较分析了不同海况下的仿真结果。An improved numerical simulation method of Doppler Spectrum of sea echo for ground-based microwave wave radar is presented based on a study of scattering mechanism of microwave with ocean surface and some research results by W. J. Plant et al. According to the theories of Bragg scattering, composite surface, linear wave, and the expressions for NRCS of different polarization types, the characteristics of Doppler spectrum is displayed in shape, amplitude and time domain, and Doppler spectra of different ocean conditions are compared and qualitatively analyzed. Accordingly, it can be concluded that the simulation re- sults reflect actual ocean environment and accord with objective law, which provides signifi- cant theoretical model for oceanographic observation by microwave wave radar and informa- tion extraction of sea state, especially parameters of wind, wave and current.

关 键 词：微波测浪雷达 多普勒频谱 数值仿真 

分 类 号：TP751[自动化与计算机技术—检测技术与自动化装置] TN95[自动化与计算机技术—控制科学与工程]