MEX-M-MRS-1-2-3-EXT2-3724

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 20150420T02:50:32.500 to 20150420T03:16:21.949. This data set was collected during the MEX Extended Mission Phase 2 (EXT2) 2007 to tbd. There were four types of scientific measurements conducted during Extended Mission: Solar Conjunction, Occultation, Bistatic Radar and Gravity where one has to distinguish between gravity measurements conducted on Phobos as well as global gravity measurements on Mars which were conducted around apocenter and target gravity measurements on Mars 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 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）数据存档是由火星快车号任务期间收集的原始数据及部分处理数据组成的时间序列集合。有关拟议的调查内容，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。本数据集涉及20150420T02:50:32.500至20150420T03:16:21.949期间发生的掩星测量。该数据集是在火星快车号扩展任务阶段2（EXT2）的2007年至待定期间收集的。在扩展任务期间进行了四种类型的科学测量：太阳 conjunction、掩星、双站雷达和重力测量。其中，必须区分在火卫一上进行的重力测量、火星全球重力测量（在远日点附近进行）以及围绕火星有趣地质结构进行的近日点重力测量。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进行。应答器2作为备用设计。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，目的是为了保持火星快车号、罗塞塔号的关键词和缩写的一致性。对于金星快车号，则使用其他定义。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 | 时间范围
近地验证 | NEV | 20030602 - 20030731
巡航1 | CR1 | 20030801 - 20031225
任务被截断！请参阅实际数据以获取完整文本[任务被截断！请参阅实际数据以获取完整文本]