机载侧视雷达图像在探测沙漠腹地故河道中的应用研究

以机载合成孔径侧视雷达图像(X波段)为主要信息源,根据雷达波探测故河道的基本原理,结合实地探险考察资料,分析了河道的影像特征,研究了河道的分布及其变迁过程,并通过采样测试数据和简化的数学模型,探讨了X波段雷达波的穿透作用。

THE APPLICATION OF AIRBORNE SLA IMAGE IN SURVEYING FOSSIL RIVER COURSE

Lying in the hinterland of the Taklimakan Desert, the Keliya River forms a mystic green corridor. Revealing the distribution features of the lower reaches of this fossil river is of great significance in the ecological construction and the groundwater source survey. Using X-band airborne SLA image as an important information source, combined with field investigation, this paper studied and analyzed the fundamental principle of this technique and the airborne SLA imagery features, stretching characteristics and changing process of the river course. By sampling data and sampling mathematical model, the authors approached the penetration effect of the airborne SLA image. The study indicates that the X-band of the airborne SLA image can penetrate a depth of 14.6cm in the region of background desert, and 10.34cm in the fossil river bed.