InSAR技术制作DEM数据的精度检验

Accuracy Detection of DEM Data Produced by InSAR Technology

SAR数据具有较高的穿透性,利用InSAR技术制作DEM数据的生产模式已日趋成熟;然而受SAR数据源的约束,其制作的DEM数据精度如何,能满足多大比例尺的DEM,一直是存在争议的问题。利用高精度控制点、1∶10000 DEM成果数据、实景三维DEM成果数据检验了利用InSAR技术制作的DEM数据的高程精度质量和地物表达的精细度。

SAR data has high penetrability.The DEM data production mode based on InSAR technology has become more and more mature.Re-stricted by SAR data source,how much accuracy DEM data can be achieved and how much scale DEM can be satisfied are controversial prob-lems.We used the high precision control points,1∶10000 DEM data and 3D DEM data to detect DEM data accuracy produced by InSAR and terrain expression precision.