MEX-M-MRS-1-2-3-EXT2-3836

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 20090924T10:23:25.500 to 20090924T13:25:30.500. This data set was collected during the MEX Extended Mission Phase 2 (EXT2) 2007 to tbd. 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 truncated!, Please see actual data for full text [truncated!, Please see actual data for full text]

数据集概述：火星快车号（Mars Express，简称MEX）无线电科学（MaRS）数据档案库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。关于提议的调查，请参阅MaRS用户手册MARSUSERMANUAL2004，位于MaRS文档/MRS_DOC文件夹中。本数据集涵盖的时间段为20090924T10:23:25.500至20090924T13:25:30.500，属于掩星测量。该数据集是在火星快车号扩展任务第二阶段（EXT2）2007年至待定日期期间收集的。在扩展任务期间进行了四种类型的科学测量：太阳 conjunction、掩星、双站雷达和重力测量。重力测量需区分在火星卫星火卫一上进行的重力测量、火星全球重力测量（在远日点附近进行）以及围绕近地物物理结构进行的重力测量（在近日点附近进行）。详细信息请参阅INST.CAT或MaRS用户手册MARSUSERMANUAL2004。除非另有说明，否则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有所不同，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，使用的是其他定义。这些任务阶段缩写也用于dataset_id的数据描述字段中。MaRS任务名称 | 缩写 | 时间段：近地验证 | NEV | 20030602 - 20030731 | 巡航1 | CR1 | 20030801 - 20031225 | 任务截断！请参阅实际数据以获取全文 [任务截断！请参阅实际数据以获取全文]