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雷达干涉测量(InSAR)和雷达立体测量(Radargrammetry)是使用SAR影像生成DEM的两种主动遥感新技术,前者利用反射雷达波的相位信息,而后者利用其灰度信息。本文利用ERS-1/2卫星对香港地区成像获取的SAR影像分别构成干涉像对和立体像对生成了DEM,并以外部DEM为参考,利用对比和统计方法分析了两种测量方法的精度情况和技术优势。
InSAR and Radargrammetry are two active remote sensing technologies that use SAR images to generate DEM. The former utilizes the phase information of the reflected radar wave and the latter utilizes its gray information. In this paper, we use the ERS-1/2 satellite to generate the DEM for the interference image pairs and the stereo pair images obtained from SAR imaging in Hong Kong, and use the external DEM as a reference to analyze the accuracy of the two measurement methods by using comparison and statistical methods And technical advantages.