Geodesy and Cartography of Phobos

在火星施werpunkt计划的结论中，我们建议对火星卫星火卫一的大地测量学和制图学进行深入研究。基于MGS（火星全球勘测者）MOC（火星轨道相机）和火星快车HRSC（高分辨率立体相机）图像，我们将跟踪和模拟火卫一在最近的火星任务期间在其轨道上的运动。摄影测量技术将用于推导改进的大地测量控制点网络，并重新测量小卫星的振动运动。然后，我们将推导出与全球大地测量框架相关的全球形状和地形模型，这些模型将比维京时代的先前模型在精度和分辨率方面更高。我们将得出体积、体积密度和惯性矩因素的新估计，这些因素与振动测量一起对内部结构具有重要意义。从HRSC图像和地形模型中，我们将得到一组新的地形图像地图。来自DLR行星研究所行星大地测量系的提案团队拥有开展提案研究的软件和工具，以及独特的工作经验。

In the conclusion of the Mars Schwerpunkt Programm , we propose to carry out an indepth study on the geodesy and cartography of the Martian satellite Phobos. On the basis of MGS (Mars Global Surveyor) MOC (Mars Orbiting Camera) and Mars Express HRSC (High Resolution Stereo Camera) images we will track and model the motion of Phobos in its orbit over the time of the recent Mars missions. Photogrammetric techniques will be used to derive an improved geodetic control point network and to re-measure the librational motion of the small satellite. We will then derive global shape and topography models tied to the global geodetic frame, which will be higher in accuracy and resolution than the previous models from the Viking era. We will derive new estimates of volume, bulk density, and moment of inertia factors, which -together with the measurements of libration- bear important implications on internal structure. From the HRSC images and topographic models, we will derive a set of new topographic image maps. The proposal team from the Planetary Geodesy Department of the DLR Institute of Planetary Research has the software and the tools, as well as a unique work experience to carry out the proposed study.