Cluster STAFF Summary Parameters

This data set contains the Cluster STAFF Summary Parameters : the total power of the magnetic field and the power of the spin-plane components of the electric field for several frequency ranges. Caveats The STAFF prime parameters do not have the standard CSDS timing which is synchronous with the spacecraft spin clock. The operation of the STAFF digital spectrum analyser is synchronised with the DWP clock. The summary parameters are the average of all those instrument measurements made during STAFF 4 s periods whose middle times lie within the minute boundaries. The difference from the standard CSDS definition is negligible for all practical purposes. The summary parameter and prime parameter E_pow_f2 is supplied by STAFF only when the satellites are in normal mode. In burst mode both STAFF and EFW measure the waveform to 180 Hz, and the onboard spectrum analyser is not used to determine the spectrum in the band 10--180 Hz. The parameters B_pow_f2, E_pow_f2, B_par_f2, and B_perp_f2 are determined from the waveform measurements which, in the case of the electric field, come from EFW. Thus in normal mode the parameter E_pow_f2 is supplied by STAFF, while in burst mode it is replaced by the parameter of the same name from the EFW experiment.本数据集涵盖Cluster卫星STAFF汇总参数，包含多个频段的磁场总功率与电场自旋平面分量功率。 注意事项：STAFF原始参数未采用与航天器自旋时钟同步的标准CSDS（Cluster科学数据系统）时序。STAFF数字频谱分析仪的工作时序与DWP时钟同步。汇总参数为STAFF 4秒观测时段内全部仪器测量值的平均值，且该时段的中间时刻落在分钟时间边界范围内。从实际应用角度而言，该定义与标准CSDS定义的差异可忽略不计。 汇总参数与原始参数E_pow_f2仅在卫星处于正常工作模式时由STAFF提供。在爆发模式下，STAFF与EFW（电场与波实验）均会对180Hz及以下的波形进行测量，且星载频谱分析仪不会用于获取10~180Hz频段的频谱。参数B_pow_f2、E_pow_f2、B_par_f2及B_perp_f2均由波形测量结果计算得到；其中电场相关的测量数据来自EFW实验载荷。因此，正常模式下参数E_pow_f2由STAFF提供，而在爆发模式下，该参数将由EFW实验载荷提供的同名参数替代。

搜集汇总

背景与挑战

背景概述

该数据集包含Cluster卫星任务中STAFF仪器的汇总参数，提供多个频率范围内磁场总功率和电场自旋平面分量功率的测量数据，时间跨度为2001年至2012年，覆盖地球磁层、磁鞘、磁尾等多个空间区域。数据为校准后的CDF格式，主要用于分析空间环境中的电磁波动现象，包括不同频率带的功率谱密度，并区分了正常模式和突发模式下参数来源的差异。