摘要:InSAR具有全天候、高分辨率和连续空间覆盖的特性,能够提供沉陷区短周期内空间连续曲面的形变信息。简述了InSAR提取地面高程信息的基本原理及数据处理过程。用ERS-1数据进行试验,着重介绍了利用InSAR技术提取高程信息,以及各流程中处理的关键技术和所要考虑的因素等。试验结果表明,利用InSAR技术提取DEM是一种非常有效的方法。最后就InSAR在国内外的应用前景作了简单的论述。
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