摘要
海面风场反演是利用全球导航卫星系统反射信号(GNSS-R)进行海面遥感探测的一个重要应用,其前提是确定散射区域信息。通过分析比较S.C.Wu算法及在此算法基础上提出的二分法,仿真得出二分算法测得的镜面反射点也可以正确得到散射点的区域变化信息。仿真分析了二分法下的海面散射信号的时延-多普勒二维相关功率关系,验证了二分算法模型简单且实际应用性强的优势。
Sea surface wind field retrieval is an important application of the global navigation satellite system for the detection of sea surface remote sensing signals. Its premise is to determine the scattering area information. By analyzing and comparing the S. C. Wu algorithm and the dichotomy based on this algorithm,the simulation results show that the measurement of the specular reflection point of the two algorithm can get the correct information of the regional variation of the scattering point. Finally,the time delay Doppler correlation power relationship of sea surface scattering signal is simulated by using the method of dichotomy. The advantages of simple and practical application of the two algorithm are verified.
出处
《科学技术与工程》
北大核心
2016年第17期221-224,共4页
Science Technology and Engineering
基金
国家自然科学基金(61271284
61362005
61561016)
广西自然科学基金项目(2013GXNSFA019004
2014GXNSFAA118352
2014GXNSFBA118280)
广西无线宽带通信与信号处理重点实验室主任基金项目
广西信息科学实验中心项目
广西研究生教育创新计划项目(YCSZ2015146)资助
关键词
镜面反射点
二分法
散射信号
时延
多普勒
specular point
dichotomy algorithm
scattering signal
time delay
Doppler
