基于地形对被动微波辐射的影响机理研究, 利用AIEM 模型模拟微波辐射的地形效应, 建立实验地貌微 缩景观, 由车载微波辐射计进行观测, 探索影响被动微波辐射特征的地形因子。地基实验表明, 在低频波段本地入 射角对山地倾斜表面的微波辐射有10 K—15 K 的影响, 小于10GHz 的观测频率可以消除地形高度对微波辐射的影响。 同时, 实验验证微波极化受地表形态属性——山体坡向和山体形状的影响显著, 地形坡度对极化信息影响不明显。

Based on the theory of the relief effects on passive microwave radiation, we think that it is necessary to do the experiments in the field by observing the different topographic landscapes we design and compare the data we observe with the simulations of relief effects modeled by AIEM. The result shows there are 10-15 K bias of brightness temperatures affected by the tilted angles between flat terrain and mountainous terrain. When the frequencies are less than 10 GHZ, the relief effects of terrain elevation becomes weakening. Therefore, we certified that microwave polarization paths and directions have obviously changed due to the surface geometrical property, such as shape and the orientation of hills.