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首页> 外文期刊>Geoscience and Remote Sensing Letters, IEEE >Global Mosaics of the Relative Height Error From TanDEM-X Quicklooks
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Global Mosaics of the Relative Height Error From TanDEM-X Quicklooks

机译：TanDEM-X Quicklooks的相对高度误差的整体镶嵌

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摘要

The primary objective of the TanDEM-X mission is the generation of a global high-precision digital elevation model (DEM) by using synthetic aperture radar interferometry. This letter presents the developed strategy for estimating the relative height error of the TanDEM-X DEM on a global scale. The mosaicking process of the final DEM combines all acquisitions at full resolution and is expected to be finished by late 2016. On the other hand, global mosaics can be generated starting from quicklook images already available for each single input data take. These downsized mosaics are operationally used to analyze the performance improvement that can be achieved by combining multiple acquisitions over the same ground areas and are a powerful mean for optimizing further acquisition planning. This letter reports the expected global performance of the final TanDEM-X product in advance of the full-resolution DEM. Knowledge of the global status of the TanDEM-X DEM relative height error is fundamental for optimizing the acquisition strategy and, therefore, the final performance and represents a valuable input for the scientific community as well as for selecting suitable areas for further interferometric experiments on a global scale.
机译：TanDEM-X任务的主要目标是通过使用合成孔径雷达干涉测量法来生成全球高精度数字高程模型（DEM）。这封信提出了在全球范围内估算TanDEM-X DEM相对高度误差的开发策略。最终DEM的镶嵌过程将全分辨率的所有采集合并在一起，预计将在2016年底完成。另一方面，可以从每个输入数据已经可用的快速查看图像开始生成全局镶嵌。这些缩小的镶嵌图在操作上用于分析性能改进，该性能改进可以通过在相同地面区域上合并多个采集来实现，并且是优化进一步采集计划的有力手段。这封信报告了最终的TanDEM-X产品在全分辨率DEM之前的预期全球性能。 TanDEM-X DEM相对高度误差的全球状况知识是优化采集策略的基础，因此，也是最终性能的代表，它对科学界以及为进一步进行干涉测量实验选择合适的区域提供了宝贵的意见。世界规模。

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