MEX-M-MRS-1-2-3-PRM-0678

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 20051213T13:35:49.000 to 20051213T14:02:58.000. This data set was collected during the MEX Mission Prime Mission Phase (PRM) 20042005. There were three types of scientific measurements conducted during PRM: Occultation, Bistatic Radar and Gravity where one has to distinguish between global gravity measurements which were conducted around apocenter and target gravity measurements 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, Venus Express and Rosetta. 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 Comissioning | MCO | 20031226 20040630 Prime Mission | P 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）的无线电科学（MaRS）数据档案是对火星任务期间收集的原始数据及部分处理数据的按时间顺序整理。有关所提议的调查，请参阅MaRS用户手册MARSUSERMANUAL2004，位于MaRS文档夹下的MRS_DOC文件夹。本数据集覆盖了20051213T13:35:49.000至20051213T14:02:58.000的时间段，是一项掩星测量。该数据集是在MEX任务的初级任务阶段（PRM，20042005年）期间收集的。在PRM期间进行了三种类型的科学测量：掩星、双站雷达和重力测量。其中，需区分全球重力测量（在远地点附近进行）和目标重力测量（在近地点附近针对有趣的地貌结构进行）。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。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，以保持火星快车号、金星快车号和罗塞塔号的关键词和缩写的一致性。这些任务阶段缩写也用于数据描述字段中的dataset_id。MaRS任务名称 | 缩写 | 时间范围
近地验证 | NEV | 20030602 - 20030731
巡航1 | CR1 | 20030801 - 20031225
任务启动 | MCO | 20031226 - 20040630
初级任务 | P

请注意，信息被截断，完整内容请参考实际数据。