MEX-M-MRS-1-2-3-PRM-0258

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 20050103T10:43:00 to 20050103T11:03:00. This data set was collected during the MEX Mission Prime Mission Phase (PRM) 20042005. This is a radio occultation ingress measurement of the Martian atmosphere. It was done prior entering occultation by the planet during the second occultation season from 20041208 to 20050104. 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 truncated!, Please see actual data for full text [truncated!, Please see actual data for full text]

数据集概览
火星快车号（Mars Express，简称MEX）的无线电科学（MaRS）数据存档是一个按时间顺序排列的原始数据及部分处理数据的集合，这些数据是在火星探测任务期间收集的。关于所提议的调查，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20050103T10:43:00至20050103T11:03:00的时间段，是对火星大气层的掩星测量。此测量是在第二次掩星季节（从20041208至20050104）进入掩星之前进行的。在MEX任务初级阶段（20042005）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。在此过程中，需区分全球重力测量（在近地点附近进行）和目标重力测量（在远地点附近针对感兴趣的地球物理结构进行）。更多详细信息，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了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
值得注意的是，火星快车号（MEX）的无线电科学（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，这是为了保持火星快车号、金星快车号和罗塞塔号的术语和缩写的一致性。这些任务阶段的缩写也用于数据集ID的数据描述字段中。
MaRS任务名称 | 缩写 | 时间跨度
近地验证 | NEV | 20030602 - 20030731
巡航1 | CR1 | 20030801 - 20031225
[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]