SAR Interferometry with TerraSAR-X
SAR Interferometry with TerraSAR-X
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发表时间：
2003
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影响因子：
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通讯作者：
M. Eineder;H. Runge;Elke Börner;R. Bamler;N. Adam;B. Schättler;H. Breit;S. Suchandt
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文献类型：
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作者：
M. Eineder;H. Runge;Elke Börner;R. Bamler;N. Adam;B. Schättler;H. Breit;S. Suchandt
在过去的十年中，利用ERS串联任务的数据，从SAR干涉测量中生成数字高程模型（DEM）的技术已经得到了验证和改进，达到了准操作状态。凭借这一经验和改进的单次通过系统概念，2000年从航天飞机雷达地形任务（SRTM）获得的数据已被用于生成具有前所未有质量的全球DEM。然而，在山地地形的极端观测条件下，ERS和SRTM都受到雷达特定的停留和阴影效应的影响，甚至失败，导致大量区域未被覆盖，给相位展开带来严重问题。本文量化了导致滞留和阴影的区域，并从总体上提出了克服阴影和改善相位展开的创新方法。
During the last decade, the techniques to generate digital elevation models (DEM) from SAR interferometry have been demonstrated and refined to a quasi-operational status using data from the ERS tandem mission. With this experience and an improved single-pass system concept, data from the Shuttle Radar Topography Mission (SRTM) acquired in 2000 have been used to produce a global DEM with unprecedented quality. However, under the extreme viewing conditions in mountainous terrain both ERS and SRTM suffer from or even fail due to the radar specific layover and shadow effect that leaves significant areas uncovered and poses severe problems to phase unwrapping. The paper quantifies the areas leading to layover and shadow, and shows innovative ways to overcome shadow and improve phase unwrapping in general.