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基于RMSprop的高精度GNSS-R镜点快速预测算法

High-precision GNSS-R Specular Point Prediction Algorithm Based on RMSprop
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摘要 从全球导航卫星系统反射信号(Global Navigation Satellite System Reflectometry,GNSS-R)测高应用中对镜面反射点的高精度需求出发,利用GNSS-R空间几何位置关系和机器学习中的RMSprop(Root Mean Square Prop)算法对镜面反射点问题进行研究,提出了一种基于RMSprop的高精度镜面反射点预测算法,该算法能够实现对学习率的自适应调整,加速梯度下降,提高算法的收敛性能。仿真结果表明,该算法收敛快,精度高。 Based on the requirements for high-precision specular points in Global Navigation Satellite System Reflectometry(GNSS-R)altimetry applications,the issue of specular reflection points is studied by using the GNSS-R spatial geometric position relations and RMSprop algorithm.A high-precision specular point prediction algorithm based on RMSprop is proposed,which can adjust the learning rate adaptively,accelerate the gradient descent,and improve the convergence performance of the algorithm.The simulation results show that the algorithm converges quickly and has high precision.
作者 盛志超 周勃 秦瑾 顾斯祺 孟婉婷 SHENG Zhichao;ZHOU Bo;QIN Jin;GU Siqi;MENG Wanting(Shanghai Aerospace Electronic Technology Institute,Shanghai 201109,China)
出处 《无线电工程》 北大核心 2021年第10期1057-1063,共7页 Radio Engineering
基金 上海市科委高新技术领域基金(19511101200) 上海市经信委基金资助项目(200130)。
关键词 全球导航卫星反射信号 镜面反射点 RMSprop 梯度下降 GNSS-R specular point RMSprop gradient descent
作者简介 盛志超,男,(1995—),毕业于上海航天技术研究院信息与通信工程专业,硕士,助理工程师。主要研究方向:GNSS-R算法研究。;周勃,男,(1979—),硕士,高级工程师。主要研究方向:GNSS-R总体设计。;秦瑾,女,(1988—),硕士,高级工程师。主要研究方向:GNSS-R总体设计和算法研究。;顾斯祺,女,(1994—),硕士,助理工程师。主要研究方向:GNSS-R数据处理。;孟婉婷,女,(1990—),硕士,工程师。主要研究方向:GNSS-R数据处理。
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