FY-2(02批)气象卫星异常事件与空间天气关系研究  

Research on the relationships between FY-2 meteorological satellite anomalies and space weather

作　　者：赵现纲[1] 魏彩英[1] 韩琦[1] 焦维新[2] 

机构地区：[1]国家卫星气象中心,北京100081 [2]北京大学地球与空间科学学院,北京100871

出　　处：《地球物理学进展》2011年第5期1522-1527,共6页Progress in Geophysics

基　　金：国家自然科学基金项目(40674097)资助

摘　　要：本文研究了FY-2(02批)气象卫星异常事件与空间天气的关系.根据异常产生的原理和现象,研究中把FY-2(02批)气象卫星在轨运行期间发生的异常事件分为设备状态跳变和天线消旋失锁两大类,并分别分析了太阳X射线、磁通总量、各种α粒子、各种质子和电子通量等空间天气参数与两类异常事件之间的关系.分析结果表明设备状态跳变事件与大于2 MeV电子通量有明显关系,83%的此类事件发生在电子通量的高值期.研究中同时还发现同一颗卫星在不同的安全管理模式下异常发生的频次大不相同,而同类的两颗卫星,不同的静电防护措施也会导致异常发生的频次差异很大.此研究结论证明了静电防护措施和卫星在轨安全管理对于预防卫星异常的有效性,同时也为卫星的异常预测以及后续卫星的空间天气保护设计方案提供了借鉴.This article has studied on the relationships between FY-2 meteorological satellite anomalies and space weather. According to the principles and phenomena of the in orbit anomalies, we classifies them into two types： Device State Transitions （DST） and Losing Lock of Antenna （LLA）. In our paper, we analyzes the relationship between these anomalies and space weather parameters which includes x-ray flux, total magnetic flux, alpha particles, protons and electrons. Our analysis result shows that there is a clear relationship between DST anomaly and ^-2 MeV electrons, 83 ~ anomalies of this type occurred during the high value of ~.~2 MeV electrons. Our research also shows that the anomaly frequencies of the same satellite are varied widely under different safe modes, while the same type satellites with different electrostatic protective measures may also have very different anomaly frequencies. （）ur research confirmed the validity of electrostatic protection and security management. The conclusion provides reference for satellite anomaly prediction and helps to design space weather protection program of following satellites.

关 键 词：气象卫星 空间天气 卫星异常 静电防护 

分 类 号：P318[天文地球—固体地球物理学]