MEX-X-MRS-1-2-3-EXT4-3565

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 Solar Conjunction measurement covering the time 20130425T15:40:41 to 20130426T15:40:27.000. This data set was collected during the MEX Extended Mission Phase 4 (EXT4) 2013 to 2014. 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 Commis truncated!, Please see actual data for full text [truncated!, Please see actual data for full text]

数据集概述：火星快车（Mars Express，简称MEX）射电科学（MaRS）数据存档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。本数据集涵盖了一次太阳会合测量，时间范围从20130425T15:40:41至20130426T15:40:27.000。该数据集是在MEX扩展任务阶段4（EXT4）2013至2014年间收集的。在扩展任务期间进行了四种类型的科学测量：太阳会合、掩星、双站雷达和重力测量。在重力测量方面，需要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，后者是在火星远日点附近进行的，以及针对特定地理结构的近日点重力测量。更多详细信息请参阅INST.CAT或MaRS用户手册MARSUSERMANUAL2004。对于所有测量，除非另有说明，否则使用在航天器上搭载的应答器1。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（MEX）射电科学（MaRS）小组使用的任务阶段与ESA提供的MISSION.CAT文件中定义的阶段有所不同，这是为了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
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]