MEX-M-MRS-1-2-3-PRM-0547

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 Bistatic Radar measurement covering the time 20050906T04:21:00 to 20050906T09:50:00. This data set was collected during the MEX Mission Prime Mission Phase (PRM) 20042005. This is a Bistatic Radar measurement to determine surface properties of Mars. The measurement was done as the specific target was available under good observing conditions. The High Gain Antenna was pointed towards Mars (coordinates: 52.90 87.10 Residual South Polar Cap). 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, 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 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）无线电科学（MaRS）数据存档是对火星快车号执行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排列的集合。有关提出的调查详情，请参阅MaRS用户手册MARSUSERMANUAL2004，位于MaRS文档夹/MRS_DOC中。本数据集涵盖了20050906T04:21:00至20050906T09:50:00之间的双基地雷达测量数据。该数据集是在MEX任务的主要任务阶段（PRM）20042005期间收集的。这是一项旨在确定火星表面特性的双基地雷达测量。测量是在特定目标在良好的观测条件下可用时进行的。高增益天线指向火星（坐标：52.90 87.10，残余南极帽）。在PRM期间进行了三种类型的科学测量：掩星、双基地雷达和重力。在有趣的地球物理结构上，需要区分全球重力测量（在远地点附近进行）和目标重力测量（在近地点附近进行）。更多信息请参阅INST.CAT或MaRS用户手册MARSUSERMANUAL2004。对于所有测量，除非另有说明，否则使用星载应答机1。应答机2被设计为备份。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。MaRS任务名称 | 缩写 | 时间范围：近地验证 | NEV | 20030602 20030731 （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]）