TanDEM-X is a formation flying interferometer consisting of two SAR satellites. Together they acquire bistatic SAR data of the earth in order to generate a global digital elevation model as well as individual scientific interferometric datasets on user request. This article gives an overview about ten years of acquisition and formation planning for the TanDEM-X mission. This planning on the one hand includes the derivation of the formation, i.e., the 3-D distance between both satellites in orbit. On the other hand, it needs to consider the regions of interest and the mission, satellite, and instrument constraints in order to effectively plan the bistatic acquisitions. During the ten years in operation TanDEM-X successfully completed various mission goals during dedicated mission phases. All these phases, their characteristics as well as the scientific and commercial outcome are described in detail.

中文翻译：

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TanDEM-X任务阶段-双站获取和编队规划十年

TanDEM-X是由两个SAR卫星组成的地层飞行干涉仪。他们共同获取地球的双基地SAR数据，以便根据用户要求生成全球数字高程模型以及各个科学干涉数据集。本文概述了TanDEM-X任务的十年采购和编队计划。一方面，该计划包括形成的推导，即在轨的两颗卫星之间的3-D距离。另一方面，它需要考虑感兴趣的区域以及任务，卫星和仪器的约束条件，以便有效地计划双站采集。在运行的十年中，TanDEM-X在专门的任务阶段成功完成了各种任务目标。所有这些阶段