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风云二号系列卫星是我国开展动态空间天气事件和空间环境监测及预警业务的重要观测平台,各系列星上均安装有高能带电粒子探测仪器开展卫星轨道空间带电粒子辐射环境连续实时的动态监测.FY2G卫星于2015年1月发射,星上采用了全新的高能粒子探测器,包括:一台高能电子探测器可监测200keV->4 MeV的高能电子,一台高能质子重离子探测器可监测4~300 MeV的高能质子,从而实现对带电粒子更宽、更精细能谱的监测.本文给出了FY2G高能带电粒子探测器在2015年1月至2015年10月期间几起典型的带电粒子动态观测结果,结合太阳和地磁活动相关参数,对高能带电粒子通量在亚暴、磁暴和太阳爆发等扰动影响下细节变化过程和特征作出了较为详细的分析描述,展现了FY2G卫星高能带电粒子探测器对轨道空间粒子环境动态变化的准确响应能力,表明观测数据可开展更加精细的轨道粒子环境评估.针对FY2G高能带电粒子探测结果进一步开展了与GOES系列卫星同期观测的比对分析,结果反映出在较小的扰动条件下多星观测到的带电粒子响应和通量变化可基本趋于一致或保持相对稳定的偏差,而扰动条件的显著变化会加大多星观测带电粒子响应和通量变化的差异,这些结果可为今后开展多星数据同化应用提供参考,也为发展磁层对扰动响应的更加复杂的图像提供了新的可能.
The Fengyun II series of satellites is an important observation platform for China to carry out dynamic space weather events and space environment monitoring and early warning businesses. High-energy charged particle detectors are installed on each series of stars to carry out continuous and real-time dynamic monitoring of the satellite orbital space charged particle radiation environment. FY2G satellite launched in January 2015, the star uses a new high-energy particle detector, including: a high-energy electronic detector can monitor 200keV-> 4MeV high-energy electrons, a high-energy proton detector can monitor 4 ~ 300 MeV energetic protons, so as to realize a wider and finer energy spectrum monitoring of charged particles.In this paper, several typical charged particle dynamics from January 2015 to October 2015 in FY2G high energy charged particle detector Based on the observations and the related parameters of solar and geomagnetic activity, the detailed process and characteristics of the detail changes of high-energy charged particle flux under the influence of sub-storms, magnetic storms and sun bursts are given. The FY2G satellite high-energy charged particle detection The accurate response of the device to the dynamic changes of orbital space particle environment indicates that the observation data can carry out a more refined orbit Sub-environment assessment.According to the FY2G high-energy charged particle detection results, the comparison with the GOES series satellite synchronization observation is further carried out. The results show that the charged particle response and the flux change observed by the multi-stars under the small perturbation conditions can basically be In the same or maintain a relatively stable deviation, and significant changes in disturbance conditions will increase the multi-star observation of charged particle response and flux variations, these results provide reference for future multi-satellite data assimilation applications, but also for the development of magnetic layer pairs The more complex images that perturb the response offer new possibilities.