MEX-M-MRS-1-2-3-EXT2-2459

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 20100606T11:57:00 to 20100606T17:22:00. This data set was collected during the MEX Extended Mission Phase 2 (EXT2) 2007 to tbd. 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 (). 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 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）数据档案收录了在火星任务期间收集的原始及部分处理数据的时间序列集合。有关提议的调查信息，请参阅MaRS用户手册MARSUSERMANUAL2004，该手册位于MaRS文档夹/MRS_DOC中。本数据集涉及20100606T11:57:00至20100606T17:22:00时间段的双站雷达测量。该数据集是在MEX扩展任务第二阶段（EXT2）2007年至待定期间收集的。该双站雷达测量旨在确定火星表面的特性。测量在特定目标在良好的观测条件下可用时进行。高增益天线指向火星（）。在扩展任务期间，共进行了三种科学测量：掩星、双站雷达和重力测量。需区分全球重力测量，该测量在远地点附近进行，以及围绕近地点在感兴趣的地球物理结构上进行的靶重力测量。更多信息请参阅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卫星上的应答器1进行。应答器2被设计为备用。任务阶段定义：需要注意的是，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，以确保火星快车号、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的数据描述字段中。MaRS任务名称 | 简称 | 时间跨度：近地验证 | NEV | 2003年6月2日至2003年7月31日，部分截断！请参阅实际数据以获取全文[部分截断！请参阅实际数据以获取全文]