说明：  干涉合成孔径雷达(InSAR)技术具有高精度的地形测绘能力。然而在山区地形条件下，受SAR 侧视成像的影响，存在较多的几何畸变区域，干涉相位表现为不连续或者缺少有效信息的情况，对单一的干涉图像对处理难以得到精确的数字高程模型(DEM)。融合两或多角度的干涉数据可以用于解决这一问题。机载双天线InSAR 对飞数据进行实验,最近的一篇新文献
(Interferometric Synthetic Aperture Radar (InSAR) is a powerful technique for precise topographic mapping. However, owing to the side-looking SAR imaging geometry, geometry distortions appear in mountainous scenarios. Because of phase discontinuities or the absence of a valid phase, it is difficult to recover accurate DEM in such areas with single-aspect InSAR data. Fusion of two or more different aspects of InSAR data can deal with this problem in practice. Experiments using two antiparallel aspects of airborne InSAR data are carried out based on this idea.)