INSAR高精度DEM提取方法及其精度分析

Methods on High-accuracy DEM Extraction from Interferometric SAR and Its Accuracy Analysis

数字高程模型(DEM)可以传达出所需要的地形、地貌及一些专题信息。因此获取高质量的DEM特别重要。随着科学技术的不断发展,InSAR技术也在不断的更新发展,目前使用InSAR技术提取数字高程模型已经越来越普遍,InSAR技术可以提供,大量、高速、高分辨率的数据。本文从合成孔径雷达干涉测量技术的原理出发,详细的描述InSAR技术获取DEM的技术流程,之后对实验结果进行精度分析,证明InSAR技术提取DEM是可行的,最后分析InSAR提取DEM的误差来源及不足之处。

The model of Digital elevation （DEM） can convey That Our needed topography, landform and some thematic informations. Therefore, How to obtaining high-quality DEM is particularly It is important That with the continuous development of science and technology, InSAR technology has been constantly updated and developed. At present, it is more and more common to use InSAR technology to extract digital elevation model. InSAR tech-nology can provide a large amount of date, high-speed and high-resolution data. Based on the principle of synthetic aperture radar interferometry technology, this paper describes in detail the technical process of InSAR technology to obtain DEM, then conducts precision analysis of experimental results to prove that InSAR technology is feasible to extract DEM, and finally analyzes the error sources and deficiencies of InSAR technology to extract DEM.