MEX-M-MRS-1-2-3-EXT8-4176

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 20210104T11:22:01.200 to 20210104T11:44:09.549. 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）数据档案库是按照时间顺序排列的原始数据及部分处理数据的集合，这些数据是在火星快车号执行火星任务期间收集的。有关调查的更多信息，请参阅MaRS用户手册MARSUSERMANUAL2004，该手册位于MaRS文档/MRS_DOC文件夹中。本数据集涉及20210104T11:22:01.200至20210104T11:44:09.549时间段的掩星测量。该数据集是在MEX扩展任务阶段8（EXT8）期间，即2021年至2022年期间收集的。在扩展任务期间进行了四种类型的科学测量：太阳联合观测、掩星、双站雷达和重力测量。在此，需区分在火卫一上进行的重力测量以及在全球范围内进行的火星重力测量，这些测量是在远地点附近进行的，以及针对火星上特定地质结构的近地点重力测量。更多信息请参阅INST.CAT或MaRS用户手册MARSUSERMANUAL2004。对于所有测量，除非另有说明，否则均使用搭载在航天器上的应答器1。应答器2设计为备用。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，这是为了保持火星快车号和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。这些任务阶段的缩写也用于数据集ID的数据描述字段。MaRS任务名称 | 缩写 | 时间范围
近地验证 | NEV | 20030602 - 20030731
巡航1 | CR1 | 20030801 - 20031225
任务阶段定义截断！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]