MMS 2 Search Coil Magnetometer (SCM) AC Magnetic Field Level 2 (L2), High Speed Burst Mode, 16384 Sample/s Data

Search Coil Magnetometer (SCM) AC Magnetic Field (16384 samples/s), Level 2, High Speed Burst Mode Data. The tri-axial Search-Coil Magnetometer with its associated preamplifier measures three-dimensional magnetic field fluctuations. The analog magnetic waveforms measured by the SCM are digitized and processed inside the Digital Signal Processor (DSP), collected and stored by the Central Instrument Data Processor (CIDP) via the Fields Central Electronics Box (CEB). Prior to launch, all SCM Flight models were calibrated by LPP team members at the National Magnetic Observatory, Chambon-la-Foret (Orleans). Once per orbit, each SCM transfer function is checked thanks to the onboard calibration signal provided by the DSP. The SCM is operated for the entire MMS orbit in survey mode. Within scientific Regions Of Interest (ROI), burst mode data are also acquired as well as high speed burst mode data. This SCM data set corresponds to the AC magnetic field waveforms in nanoTesla and in the GSE frame. The SCM instrument paper for SCM can be found at http://link.springer.com/article/10.1007/s11214-014-0096-9 and the SCM data product guide at https://lasp.colorado.edu/mms/sdc/public/datasets/fields/.

搜索线圈磁强计（Search Coil Magnetometer, SCM）交流磁场（采样率16384样本/秒）二级高速突发模式（High Speed Burst Mode）数据集。该三轴搜索线圈磁强计及其配套前置放大器可测量三维磁场扰动。SCM采集的模拟磁波形经数字信号处理器（Digital Signal Processor, DSP）内部完成数字化与处理后，由仪器中央数据处理器（Central Instrument Data Processor, CIDP）通过磁场探测中央电子箱（Fields Central Electronics Box, CEB）完成采集与存储。发射前，所有SCM飞行型号均由位于奥尔良的尚邦拉福雷国家地磁观测台的LPP团队成员完成校准。每完成一次轨道运行，便借助DSP提供的星上校准信号对单台SCM的传递函数进行校验。SCM在整个MMS轨道周期内均以勘测模式运行。在科学感兴趣区域（Regions Of Interest, ROI）内，除常规数据外，亦可采集突发模式数据与高速突发模式数据。本SCM数据集对应GSE坐标系下、单位为纳特斯拉（nanoTesla）的交流磁场波形。关于SCM仪器的相关学术论文可参见http://link.springer.com/article/10.1007/s11214-014-0096-9，SCM数据产品指南则可访问https://lasp.colorado.edu/mms/sdc/public/datasets/fields/。