MEX-M-MRS-1-2-3-EXT8-4210

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 20210410T04:27:19.620 to 20210410T10:00:37.269. This data set was collected during the MEX Extended Mission Phase 8 (EXT8) 2021 to 2022. This is a radio occultation egress measurement of the Martian atmosphere. This was done after exiting occultation by the planet during the occultation season. 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 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）数据档案收录了在火星探测任务期间收集的原始及部分处理过的时序数据。关于调查的详细信息，请参阅MaRS用户手册《MARSUSERMANUAL2004》，位于MaRS文档夹下的MRS_DOC文件夹。本数据集涉及2021年4月10日04:27:19.620至10:00:37.269期间的掩星测量。该数据集是在MEX扩展任务第八阶段（EXT8）2021至2022年期间收集的。这是对火星大气进行的无线电掩星出射测量，在掩星季节，在行星掩星之后完成。在扩展任务期间进行了四种类型的科学测量：太阳联合、掩星、双站雷达和重力测量，其中需区分在火卫一上进行的重力测量以及火星上的全球重力测量，这些测量是在远地点附近进行的，以及针对火星上特定地球物理结构的近地点重力测量。更多详细信息请参考INST.CAT或MaRS用户手册《MARSUSERMANUAL2004》。对于所有测量，除非另有说明，否则使用搭载在航天器上的应答器1。应答器2设计为备份。任务阶段定义：需要注意的是，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文件中定义的任务阶段有所不同，以保持火星快车和罗塞塔的关键词和缩写的一致性。对于金星快车，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。MaRS任务名称 | 缩写 | 时间跨度
近地验证 | NEV | 20030602 - 20030731（截断！请参阅实际数据以获取完整内容）[截断！请参阅实际数据以获取完整内容]