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- 2018
利用GPS-IR监测土壤含水量的反演模型
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Abstract:
GPS-IR （GPS-interferometric reflectometry）本质上是一种基于GPS辐射源的双基地雷达技术，利用大地测量型接收机记录的信噪比（signal-to-noise ratio，SNR）数据可用于反演土壤含水量。针对GPS-IR获取土壤含水量的参数估计问题，提出了一种改进的反射信号参数估计方法，并研究了土壤含水量反演模型的建立过程。实验结果表明，利用改进的反射信号参数估计方法可获得更加准确可靠的结果，反射信号相位与土壤含水量间存在显著的线性相关，可建立土壤含水量的线性反演模型，但在连续降雨条件下会存在较大误差
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