基于阵列GPS反射信号的海浪多参数反演方法研究

项目名称： 基于阵列GPS反射信号的海浪多参数反演方法研究

项目编号： No.61201097

项目类型： 青年科学基金项目

立项/批准年度： 2013

项目学科： 电子学与信息系统

项目作者： 王波

作者单位： 山东省科学院

项目金额： 24万元

中文摘要： 针对当前GPS-R技术仅用单个反射信号反演有效波高一个参数的不足，本项目通过研究阵列GPS海面反射信号的时延-多普勒成像特性及其模型,建立阵列GPS海面反射信号反演波向、波周期和有效波高参数的模型和算法，并提高反演精度。基于雷达系统理论和GPS信号C/A码相关特性，结合GPS信号海面散射特性，建立阵列GPS海面反射信号与波向、波周期和有效波高之间的数学模型；利用直射信号的辅助信息，研究阵列GPS海面反射信号时延-多普勒特征成像方法；研究单个GPS反射信号反演波向和波周期的模型和算法，建立阵列GPS海面反射信号反演海浪的多参数反演优化模型和算法，验证有效波高反演方法，研发基于阵列GPS海面反射信号的海浪参数反演软件，并进行实验验证。其研究成果对海洋观测新技术研究和新装备制造，及其在我国北斗系统中的应用等扩展领域，都具有明显学术价值和重要的战略意义。

中文关键词： 全球定位系统；波浪；有效波高；；

英文摘要： Aiming at the limitation that GPS-R technique only estimates significant wave height using only single reflection, the project is focused on the research on the delay-doppler characteristics and model of array GPS reflections from sea surface, and establishes the model and algorithms of estimating wave direction, wave period and significant wave heights based on array GPS reflections which may improve the estimation accuracy. Based on radar system theory, the characteristics of signal correlations of GPS C/A code, the scattering characteristics of GPS signals, the relation of array GPS reflections with wave directions, wave period and significant wave heights is modeled. With the assisted information of direct GPS signals, the method of delay-doppler mapping of array GPS reflections is investigated. The model and algorithms of estimating wave direction and wave period using single reflection is researched, and then the multi-parameter estimating model and algorithm using array reflections is established. Preliminary estimating software is developed as well, integrated with significant wave height estimating method. Finally, an experiment is carried out to validate the results. The research results of this project would have significant academic value and important strategic significance for new technology resear

英文关键词： GPS；ocean wave；significant wave height；；