THE CLUSTER MAGNETIC FIELD INVESTIGATION
THE CLUSTER MAGNETIC FIELD INVESTIGATION
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DOI：
10.1007/978-94-011-5666-0_3
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发表时间：
1997-12
影响因子：
10.3
通讯作者：
A. Balogh;M. Dunlop;S. Cowley;D. Southwood;J. Thomlinson;K. Glassmeier;G. Musmann;H. Lühr
中科院分区：
文献类型：
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作者：
A. Balogh;M. Dunlop;S. Cowley;D. Southwood;J. Thomlinson;K. Glassmeier;G. Musmann;H. Lühr
星团使命为研究近地等离子体环境中的等离子体过程和结构提供了新的机会。磁场的四点测量将能够分析一系列现象的三维结构和动力学，这些现象塑造了磁层的宏观特性。将结合磁场数据的差分测量，利用经典的时间序列分析技术，反复使用物理模型和对星团轨道沿着遇到的现象进行模拟，得出一系列参数，如电流密度矢量、波矢量和不连续法线和曲率。控制和理解影响四点测量的误差源是所使用的分析技术的组成部分。飞行仪器包括两个三轴磁通门磁力计和每个航天器上的一个机载数据处理单元，采用高度容错结构建造。高分辨率（高达8 pT）下的高矢量采样率（高达67个矢量s-1）与板载事件检测软件和突发存储器相结合，可捕获一系列动态现象的特征。数据处理计划旨在确保磁场数据的快速传播，以支持对集群遇到的磁层现象的协作分析。
The Cluster mission provides a new opportunity to study plasma processes and structures in the near-Earth plasma environment. Four-point measurements of the magnetic field will enable the analysis of the three dimensional structure and dynamics of a range of phenomena which shape the macroscopic properties of the magnetosphere. Difference measurements of the magnetic field data will be combined to derive a range of parameters, such as the current density vector, wave vectors, and discontinuity normals and curvatures, using classical time series analysis techniques iteratively with physical models and simulation of the phenomena encountered along the Cluster orbit. The control and understanding of error sources which affect the four-point measurements are integral parts of the analysis techniques to be used. The flight instrumentation consists of two, tri-axial fluxgate magnetometers and an on-board data-processing unit on each spacecraft, built using a highly fault-tolerant architecture. High vector sample rates (up to 67 vectors s-1) at high resolution (up to 8 pT) are combined with on-board event detection software and a burst memory to capture the signature of a range of dynamic phenomena. Data-processing plans are designed to ensure rapid dissemination of magnetic-field data to underpin the collaborative analysis of magnetospheric phenomena encountered by Cluster.