MEX-M-MRS-1-2-3-EXT2-2444

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 20100525T11:04:44.050 to 20100525T11:30:33.949. This data set was collected during the MEX Extended Mission Phase 2 (EXT2) 2007 to tbd. There were three types of scientific measurements conducted during Extended Mission: 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, 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 Commissioning | MCO | 20031226 20040630 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）数据存档是对火星任务期间收集的原始及部分处理数据的按时间顺序排列的集合。关于拟议的调查，请参阅MaRS用户手册MARSUSERMANUAL2004，该手册位于MaRS文档夹下的MRS_DOC文件夹中。本数据集覆盖了20100525T11:04:44.050至20100525T11:30:33.949的掩星测量。此数据集在MEX扩展任务第二阶段（EXT2）2007年至待定期间收集。在扩展任务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（在近地点附近针对感兴趣的地球物理结构进行）。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，否则使用在卫星上的应答器1。应答器2设计为备份。任务阶段定义：应注意的是，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文件中定义的不同，以确保火星快车号和罗塞塔号的术语和缩写保持一致。对于金星快车号，则使用其他定义。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 | 时间范围：近地验证 | NEV | 20030602 - 20030731 航行1 | CR1 | 20030801 - 20031225 任务启动 | MCO | 20031226 - 20040630 截断，请参阅实际数据以获取全文 [截断，请参阅实际数据以获取全文]