Abstract The primary objective of the German TanDEM-X mission is the generation of a globally available, highly accurate and detailed digital elevation model (DEM), with the final product having 12 m posting, 2 m relative and 10 m absolute vertical accuracy. The first version of this global DEM has been finalized by the German Aerospace Center (DLR), in September 2016. Our experience with the experimental application of non-local means filters to TanDEM-X data suggests that TanDEM-X has the potential of producing DEMs of even higher resolution and accuracy. The goal of this investigation is to explore the possibility of employing non-local InSAR filters to achieve an effective resolution of 6 m, with an equivalent posting, and a relative height error below 0.8 m, i.e. an increase of quality by a factor of 2 × 2 in resolution and a factor of 2 m/0.8 m = 2.5 in height accuracy — all in all one order of magnitude.

中文翻译：

---

用于 TanDEM-X 高分辨率 DEM 生成的非局部均值 InSAR 滤波的潜力和限制

摘要 德国 TanDEM-X 任务的主要目标是生成全球可用的、高精度和详细的数字高程模型 (DEM)，最终产品具有 12 m 的张贴精度、2 m 的相对精度和 10 m 的绝对垂直精度。该全球 DEM 的第一个版本已于 2016 年 9 月由德国航空航天中心 (DLR) 完成。我们将非局部均值滤波器实验应用于 TanDEM-X 数据的经验表明，TanDEM-X 具有产生DEM 具有更高的分辨率和精度。本次调查的目标是探索使用非局部 InSAR 滤波器实现 6 m 有效分辨率的可能性，具有等效发布，以及低于 0.8 m 的相对高度误差，即质量提高 2 倍× 2 的分辨率和 2 m/0 的系数。