【摘要】 本文主要讨论了直接搜索算法在合成孔径雷达(SAR)数据反演地表湿度中的应用。相对于其它确定性算法,直接搜索算法在计算时不需要目标函数的导数信息,避免了函数求导所引起的矩阵方程病态化。同时,该类算法计算量小,计算时间短,精确度高,适用于实时大运算量反演土壤水分。更多还原

【Abstract】 Direct Search Method is used in inversion of soil moisture from SAR data in this paper.Compared to other classic search method,this kind of method can avoid solving ill-posed matrix equation caused by derivation.At the same time,it needs small amount of calculation,and can get relative high accuracy.It fits to be used in real-time inversion of soil moisture.更多还原