MEX-M-MRS-1-2-3-PRM-0710

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 Occultation measurement covering the time 20051225T01:23:00 to 20051225T01:42:00. This data set was collected during the MEX Mission Prime Mission Phase (PRM) 20042005. 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, and Rosetta. For Venus Express other definitions are used. 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 Mission Commissioning | MCO | 20031226 20040630 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（MEX）无线电科学（MaRS）数据档案是一系列按时间顺序排列的原始数据及部分处理数据，这些数据是在火星快车号任务期间收集的。有关所提议的调查信息，请参阅MaRS用户手册MARSUSERMANUAL2004，位于MaRS文档/MRS_DOC文件夹中。本数据集覆盖了20051225T01:23:00至20051225T01:42:00的时间段，属于掩星测量。该数据集收集于火星快车号任务的首次任务阶段（PRM）20042005期间。在PRM阶段进行了三种类型的科学测量：掩星、双站雷达和重力测量。其中，需要区分全球重力测量（在远地点附近进行）和目标重力测量（在近地点附近针对有趣的地貌结构进行）。更多信息请参见INST.CAT或MaRS用户手册MARSUSERMANUAL2004。除非另有说明，所有测量均使用搭载在卫星上的应答器1进行。应答器2设计为备用。任务阶段定义：需要注意的是，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文件中定义的任务阶段存在差异，目的是为了保持火星快车号、罗塞塔号的关键词和缩写的一致性。对于金星快车号，使用其他定义。这些任务阶段的缩写也用于数据集ID的数据描述字段中。MaRS任务名称 | 缩写 | 时间跨度
近地验证 | NEV | 20030602 - 20030731
巡航1 | CR1 | 20030801 - 20031225
任务启动 | MCO | 20031226 - 20040630
（请注意，文本已被截断，请参阅实际数据以获取完整内容。[文本已被截断，请参阅实际数据以获取完整内容]。）