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SVRM辅助的北斗GEO卫星反射信号土壤湿度反演方法

杨磊 吴秋兰 张波 梁勇 洪学宝 邹文博

杨磊, 吴秋兰, 张波, 等 . SVRM辅助的北斗GEO卫星反射信号土壤湿度反演方法[J]. 北京航空航天大学学报, 2016, 42(6): 1134-1141. doi: 10.13700/j.bh.1001-5965.2015.0656
引用本文: 杨磊, 吴秋兰, 张波, 等 . SVRM辅助的北斗GEO卫星反射信号土壤湿度反演方法[J]. 北京航空航天大学学报, 2016, 42(6): 1134-1141. doi: 10.13700/j.bh.1001-5965.2015.0656
YANG Lei, WU Qiulan, ZHANG Bo, et al. SVRM-assisted soil moisture retrieval method using reflected signal from BeiDou GEO satellites[J]. Journal of Beijing University of Aeronautics and Astronautics, 2016, 42(6): 1134-1141. doi: 10.13700/j.bh.1001-5965.2015.0656(in Chinese)
Citation: YANG Lei, WU Qiulan, ZHANG Bo, et al. SVRM-assisted soil moisture retrieval method using reflected signal from BeiDou GEO satellites[J]. Journal of Beijing University of Aeronautics and Astronautics, 2016, 42(6): 1134-1141. doi: 10.13700/j.bh.1001-5965.2015.0656(in Chinese)

SVRM辅助的北斗GEO卫星反射信号土壤湿度反演方法

doi: 10.13700/j.bh.1001-5965.2015.0656
基金项目: 国家"863"计划(2013AA102301);山东农业大学智能化农业装备研发项目(2015-16);山东农业大学盐碱地改良利用项目(2014-IV-4)
详细信息
    作者简介:

    杨磊 男,硕士,讲师。主要研究方向:GNSS应用。E-mail:yanglei_sdau@163.com;梁勇 男,博士,教授,博士生导师。主要研究方向:数字农业。E-mail:yongl@sdau.edu.cn

    通讯作者:

    梁勇,E-mail:yongl@sdau.edu.cn

  • 中图分类号: P237;S152.7+1

SVRM-assisted soil moisture retrieval method using reflected signal from BeiDou GEO satellites

  • 摘要: 提出了一种支持向量回归机(SVRM)辅助的北斗地球静止轨道(GEO)卫星反射信号土壤湿度反演方法。使用全球导航卫星系统反射信号(GNSS-R)右旋圆极化(RHCP)天线和左旋圆极化(LHCP)天线接收体制进行了地基实验,采集了北斗GEO卫星直射、反射信号原始数据,并从中提取直射、反射信号的相关功率,结合北斗GEO卫星的高度角与方位角信息作为输入,烘干称重法获取的土壤湿度作为输出对使用径向基(RBF)核函数的ε-SVRM进行了训练。独立测试集上的结果表明,SVRM辅助的北斗GEO卫星反射信号土壤湿度反演方法获取的土壤湿度结果与烘干称重法获取的土壤湿度参考值误差控制在3%以内,线性回归方程决定系数为0.897 9,均方根误差RMSE为1.492 6%,证明了该方法具有良好的泛化特性,实际应用中效果良好。

     

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出版历程
  • 收稿日期:  2015-10-12
  • 刊出日期:  2016-06-20

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