基于GNSS反射信号双变量统计特征的海面风速反演方法
本发明涉及一种基于GNSS反射信号双变量统计特征的海面风速反演方法,属于遥感技术领域。本发明设计了根据邻域样本点权重及邻域范围的局部加权回归模型,得到特征值随风速变化的敏感性,为LES、NBRCS分配融合权重,进而得到融合特征;然后基于融合特征建立随机森林回归模型,得到双变量风速反演结果。相比于波形匹配法,该方法计算量小,无需波形仿真;相比于单特征经验地球物理模型函数法,该方法能同时考虑多个特征对风速反演精度的影响,进一步提升风速反演性能。
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