We utilized the TanDEM-X digital elevation model (DEM) for investigating the complete record of confirmed terrestrial impact structures with respect to its suitability to support geological analysis. The consistently high resolution and high accuracy of this model is a prerequisite for detailed morphological studies. This DEM represents an interesting repository to aid in preparing and executing fieldwork for the exploration of new impact crater candidates. For a selection of small, mid-sized, and large impact structures, we here compare the TanDEM-X results with those from other DEMs that were derived either with synthetic aperture radar interferometry or from optical stereo pairs. Our analysis includes high-resolution mapping and the generation of detailed elevation cross sections. Only for very small impact craters, when the diameter is in the order of the pixel posting of TanDEM-X of 12 m or when the texture of the local environment does not support radar remote sensing, accurate analysis is hampered. Our results demonstrate that the high horizontal and vertical accuracies of the TanDEM-X DEM, coupled with its dense pixel grid, provide a considerable improvement in space-borne remote sensing of the complete record of simple and complex terrestrial impact structures over a wide range of diameters.

中文翻译：

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TanDEM-X 数字高程模型和地面撞击结构


我们利用 TanDEM-X 数字高程模型 (DEM) 来调查已确认的陆地撞击结构的完整记录，以确定其是否适合支持地质分析。该模型始终如一的高分辨率和高精度是详细形态学研究的先决条件。该 DEM 代表了一个有趣的存储库，可帮助准备和执行探索新候选陨石坑的实地工作。对于一系列小型、中型和大型撞击结构，我们在这里将 TanDEM-X 结果与其他 DEM 的结果进行比较，这些 DEM 是通过合成孔径雷达干涉测量法或光学立体对导出的。我们的分析包括高分辨率绘图和详细高程横截面的生成。仅对于非常小的撞击坑，当直径为TanDEM-X像素张贴的12 m量级时或当局部环境纹理不支持雷达遥感时，精确分析受到阻碍。我们的结果表明，TanDEM-X DEM 的高水平和垂直精度，加上其密集的像素网格，可以显着改进星载遥感，对各种简单和复杂的地面撞击结构的完整记录进行记录。直径。