先进SAR卫星的地形估计性能:cosmos - skymed和TerraSAR-X

2017 8th International Conference on Recent Advances in Space Technologies (RAST) Pub Date : 2017-06-01 DOI:10.1109/RAST.2017.8003006

U. Sefercik, N. Yastikli, C. Atalay

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引用次数: 1

摘要

目前，cosmos - skymed (CSK)和TerraSAR-X (TSX)是最先进的合成孔径雷达(SAR)卫星，可提供以前星载SAR任务无法实现的最高空间分辨率。除了高空间分辨率外，它们都能够重复通过干涉测量，从而可以从空间对可见的地球表面进行三维数字建模。本文综合分析了CSK和TSX高分辨率聚光(HS)图像的数字地球模拟性能，生成的数字地表模型(DSMs)的绝对垂直精度和相对垂直精度。使用机载激光扫描(ALS)导出的参考DSM计算了伊斯坦布尔不同土地类别的精度。CSK和TSX在开放、建成和森林土地类别中获得了兼容的结果。考虑标准偏差，绝对垂直精度在8 ~ 10 m之间。根据主动传感的期望，CSK和TSX的相对垂直精度优于绝对垂直精度。

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Terrain estimation performance of advanced SAR satellites: Cosmo-SkyMed and TerraSAR-X

Presently, Cosmo-SkyMed (CSK) and TerraSAR-X (TSX) are the most advanced synthetic aperture radar (SAR) satellites which offer highest spatial resolution that could not be achieved from previous spaceborne SAR missions. In addition to high spatial resolution both of them are capable of repeat-pass interferometry that makes possible three dimensional digital modelling of visible earth surface from space. In this study, digital earth modelling performance of CSK and TSX high resolution spotlight (HS) images is comprehensively analyzed regarding absolute and relative vertical accuracies of generated digital surface models (DSMs). Accuracies were calculated on different land classes in Istanbul using a reference DSM derived by airborne laser scanning (ALS). Compatible results were achieved for CSK and TSX in open, built-up, and forest land classes. The absolute vertical accuracies are between 8 m and 10 m considering standard deviation. The relative vertical accuracies are superior to absolute both for CSK and TSX as expected from active sensing.

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2017 8th International Conference on Recent Advances in Space Technologies (RAST)

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