Estimating high-energy electron fluxes by intercalibrating Reimei optical and particle measurements using an ionospheric model
Estimating high-energy electron fluxes by intercalibrating Reimei optical and particle measurements using an ionospheric model
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DOI：
10.1016/j.jastp.2012.06.014
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发表时间：
2012-11
影响因子：
1.9
通讯作者：
D. Whiter;B. Lanchester;T. Sakanoi;K. Asamura
中科院分区：
文献类型：
--
作者：
D. Whiter;B. Lanchester;T. Sakanoi;K. Asamura
本文介绍了一种利用电离层模型对“灵号”微卫星的粒子和光学测量数据进行互标定的技术。Reimei有三个极光相机（MAC），以及电子和离子能谱分析仪（ESA/ISA）。测量到的最大电子能量为12keV，这意味着在高能事件中，粒子数据经常丢失能量流的重要部分。虽然总电子能量通量可以从光学测量中估计出来，但MAC数据必须精确校准，这由于来自月球和雪反射等未知和可变背景而变得复杂。利用欧空局对完整电子能谱的不饱和测量作为电离层模型的输入，可以校准同步相机观测结果，从而可以对同一事件中最大能量远高于欧空局测量值的其他时间的总电子能量通量进行估计。
This paper describes a technique for intercalibrating particle and optical measurements from the Reimei microsatellite using an ionospheric model. Reimei has three auroral cameras (“MAC”), together with electron and ion energy spectrum analysers (“ESA/ISA”). The maximum electron energy measured is 12keV, which means that during high-energy events, the particle data are often missing an important part of the energy flux. Although the total electron energy flux can be estimated from the optical measurements, the MAC data must be accurately calibrated, which is complicated by an unknown and variable background from sources such as the moon and snow reflection. Using unsaturated ESA measurements of the complete electron spectrum as input for an ionospheric model, the coincident camera observations can be calibrated, allowing estimates to be made of the total electron energy flux at other times during the same event, when the maximum energy is well above that measured by ESA.