As a powerful earth-observation technique, synthetic aperture radar interferometry (InSAR) is thought as one of the effective techniques for obtaining large-area and high-quality DEMs.

• 合成孔径雷达干涉测量技术(InSAR)作为一种极具发展潜力的对地观测技术,被认为是获取大范围高质量DEM数据的最有效手段之一。