Geodesy and Cartography of Phobos

火卫一的大地测量和制图

• 批准号: 18489011
• 负责人: Professor Dr. Jürgen Oberst
• 金额: --
• 依托单位: Institut für Planetenforschung
• 依托单位国家: 德国
• 项目类别: Priority Programmes
• 财政年份: 2005
• 资助国家: 德国
• 起止时间: 2004-12-31 至 2008-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/18489011?language=en
• 关键词: Geodesy; Cartography; Phobos

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.

在火星施沃朋特计划的结论中，我们建议对火星卫星Phobos的大地测量和制图进行深入研究。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)的图像，我们将跟踪并模拟火卫一在最近的火星任务期间在其轨道上的运动。将利用摄影测量技术得出改进的大地控制点网络，并重新测量小卫星的摆动运动。然后，我们将推导出与全球大地框架绑定的全球形状和地形模型，其精度和分辨率将高于北欧海盗时代的以前模型。我们将得出体积、体积密度和转动惯量系数的新估计值，这些估计值与振动测量一起对内部结构具有重要影响。从HRSC图像和地形模型中，我们将得到一套新的地形图。德国航天中心行星研究所行星大地测量部的提议小组拥有开展拟议研究的软件和工具，以及独特的工作经验。