MEX-M-MRS-1-2-3-PRM-0435

Data Set Overview The Mars Express (MEX) Radio Science (MaRS) Data Archive is a timeordered collection of raw and partially processed data collected during the MEX Mission to Mars. For more information on the investigations proposed see the MaRS User Manual MARSUSERMANUAL2004 in the MaRS DOCUMENT/MRS_DOC folder. This is a Target Gravity measurement covering the time 20050722T03:18:55 to 20050722T07:44:28.000. This data set was collected during the MEX Mission Prime Mission Phase (PRM) 20042005. This is a Target Gravity on Mars. These kind of measurements were typically conducted during Mars Express pericenter over interesting geophysical structures like Tempe Fossae or Olympus Mons. This particular measurement was conducted over Ascraeus Mons. There were three types of scientific measurements conducted during PRM: Occultation, Bistatic Radar and Gravity where one has to distinguish between global gravity measurements which were conducted around apocenter and target gravity measurements which were conducted around pericenter over interesting geophysical structures. For more information see INST.CAT or the MaRS User Manual MARSUSERMANUAL2004. For all measurements if not indicated otherwise Transponder 1 onboard the s/c was used. Transponder 2 is designed to be a backup. Mission Phase Definition It should be noted that the Mars Express (MEX) Radio Science (MaRS) group uses mission phases which deviate from the ones defined in the MISSION.CAT files given by ESA in order to keep the keywords and abbreviations consistent for Mars Express, Venus Express and Rosetta. Those mission phase abbreviations are also used in the data description field of the dataset_id. MaRS mission name | abbreviation | time span Near Earth Verification | NEV | 20030602 20030731 truncated!, Please see actual data for full text [truncated!, Please see actual data for full text]

数据集概览：火星快车（Mars Express，简称MEX）无线电科学（MaRS）数据档案库收录了在火星任务期间收集的原始及部分处理数据的时间序列集合。关于拟进行的调查，请参阅MaRS用户手册MARSUSERMANUAL2004，位于MaRS文档/MRS_DOC文件夹中。本数据集涉及20050722T03:18:55至20050722T07:44:28.000的时间段，对目标重力进行了测量。该数据集收集于火星快车任务的首期任务阶段（PRM）20042005期间。这是对火星上的目标重力进行的测量。此类测量通常在火星快车经过有趣的地貌结构如提梅斯峡谷（Tempe Fossae）或奥林帕斯山（Olympus Mons）的近地心点时进行。本次特定测量是在阿斯克拉厄斯山（Ascraeus Mons）上进行的。在PRM期间，共进行了三种科学测量：掩星、双站雷达和重力测量。在重力测量中，需区分全球重力测量（在远地心点进行）和目标重力测量（在近地心点、针对有趣的地貌结构进行）。更多详细信息，请参阅INST.CAT或MaRS用户手册MARSUSERMANUAL2004。除非另有说明，所有测量均使用搭载于卫星上的应答器1进行。应答器2设计为备份。任务阶段定义：值得注意的是，火星快车（MEX）无线电科学（MaRS）小组使用的任务阶段与ESA提供的MISSION.CAT文件中定义的阶段有所不同，以保持火星快车、金星快车和罗塞塔的术语和缩写的一致性。这些任务阶段缩写也用于dataset_id数据描述字段中。MaRS任务名称 | 缩写 | 时间跨度
火星快车任务 | NEV | 20030602 20030731 截断！，请参阅实际数据以获取全文 [截断！，请参阅实际数据以获取全文]