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风云二号卫星空间环境监测器由空间高能粒子探测器和太阳X射线探器两台单机组成，运行在地球同步轨道高度，能够提供实时的太阳耀斑监测和质子事件监测．风云二号空间环境监测器是国内第一套天基太阳质子事件监测警报系统，在23周太阳活动峰年期间基本监测到所有的质子事件，并通过分析实时监测的耀斑X射线辐射特征，多次成功地开展了太阳质子事件警报服务．风云二号空间环境监测器也是国内第一次进行地球同步高度的空间环境探测，发现地球同步高度粒子变化的一些基本特征，包括粒子通量的昼夜周期变化；在太阳和地磁宁静时，能量大于1.4MeV电子通量在10～2×102/cm2·s·sr之间变化，能量大于l MeV的质子通量在6×102~8×103／cm·s·sr之间变化．
Fengyun II satellite space environment monitor by the space high-energy particle detector and the sun X-ray detector two stand-alone, running at the geostationary orbit height, to provide real-time solar flare monitoring and proton event monitoring. Fengyun II space environment monitor is the first set of space-based solar proton incident monitoring and warning system in the 23 solar week peak period of basic monitoring of all the proton events, and by analyzing real-time monitoring of flare X-ray radiation characteristics and more The successful launch of the solar proton incident alert service. The Storm II space environment monitor is also the first time that China has conducted space environment exploration for geosynchronous altitude and found some basic characteristics of the changes of the particles in the geosynchronous height, including the diurnal cycle of particle flux. When the solar and geomagnetic sedation, the energy is greater than The 1.4MeV electron flux changes between 10 ~ 2 × 102 / cm2 · s · sr, and the proton fluxes with energies greater than 1 MeV range from 6 × 102 ~ 8 × 103 / cm · s · sr.