MEX-M-MRS-1-2-3-PRM-0452

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 Global Gravity measurement covering the time 20050728T11:16:07 to 20050728T14:25:40.000. This data set was collected during the MEX Mission Prime Mission Phase (PRM) 20042005. This is a measurement of the Global Gravity field of Mars. Global gravity measurements were typically done when Mars Express was around Apocenter. 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 Cruise 1 | CR1 | 20030801 20031225 truncated!, Please see actual data for full text [truncated!, Please see actual data for full text]

数据集概览：火星快车号（Mars Express，简称MEX）的无线电科学（MaRS）数据存档是一系列按时间顺序排列的原始及部分处理数据，这些数据是在火星快车号火星任务期间收集的。关于提议的调查详情，请参阅MaRS用户手册MARSUSERMANUAL2004，位于MaRS文档/MRS_DOC文件夹中。这是一组覆盖时间范围为20050728T11:16:07至20050728T14:25:40.000的全局重力测量数据。该数据集是在火星快车号任务初级阶段（PRM）20042005期间收集的。这是对火星全局重力场的测量。全局重力测量通常在火星快车号接近火星远地点时进行。在PRM阶段，共进行了三种科学测量：掩星、双站雷达和重力测量，其中需要区分在近地点附近进行的全球重力测量和在远地点附近进行的针对有趣地质结构的重力测量。更多信息请参阅INST.CAT或MaRS用户手册MARSUSERMANUAL2004。除非另有说明，所有测量均使用在航天器上的应答器1进行。应答器2作为备份设计。任务阶段定义：值得注意的是，火星快车号（MEX）无线电科学（MaRS）小组使用的任务阶段与ESA提供的MISSION.CAT文件中定义的阶段不同，以保持火星快车号、金星快车号和罗塞塔号的术语和缩写的一致性。这些任务阶段缩写也用于dataset_id的数据描述字段中。MaRS任务名称 | 缩写 | 时间范围：近地验证 | NEV | 20030602 - 20030731 飞船1 | CR1 | 20030801 - 20031225 [截断！请参阅实际数据以获取完整文本] [截断！请参阅实际数据以获取完整文本]