MEX-M-MRS-1-2-3-EXT8-4189

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 see the MaRS User Manual MARSUSERMANUAL2004 in the MaRS DOCUMENT/MRS_DOC folder. This is a Occultation measurement covering the time 20210208T09:43:42.000 to 20210208T10:05:50.649. This data set was collected during the MEX Extended Mission Phase 8 (EXT8) 2021 to 2022. There were four types of scientific measurements conducted during Extended Mission: Solar Conjunction, Occultation, Bistatic Radar and Gravity where one has to distinguish between gravity measurements conducted on Phobos as well as global gravity measurements on Mars which were conducted around apocenter and target gravity measurements on Mars 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 Commissi 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）无线电科学（MaRS）数据档案库是对火星任务期间收集的原始及部分处理数据的按时间顺序编排的集合。关于调查的更多信息，请参阅MaRS用户手册MARSUSERMANUAL2004，该手册位于MaRS文档夹下的MRS_DOC文件夹中。本数据集覆盖了从20210208T09:43:42.000至20210208T10:05:50.649的时间段的掩星测量。该数据集是在MEX扩展任务第8阶段（EXT8）2021至2022年间收集的。在扩展任务期间进行了四种类型的科学测量：太阳 conjunction、掩星、双站雷达和重力测量。在这些测量中，需要区分在火卫一上进行的重力测量、在火星近地点附近进行的全球重力测量以及在火星有趣的地物理结构附近进行的近地点重力测量。更多信息请参阅INST.CAT或MaRS用户手册MARSUSERMANUAL2004。除非另有说明，所有测量均使用搭载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，则使用其他定义。这些任务阶段缩写也用于数据集_id的数据描述字段中。MaRS任务名称 | 缩写 | 时间范围
近地验证 | NEV | 20030602 - 20030731
巡航1 | CR1 | 20030801 - 20031225
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