利用COSMIC掩星数据监测电离层的异常变化  

Monitoring of Ionospheric Anomaly Using COSMIC Occultation Measurements

作　　者：王虎[1,2] 刘志强[3,2] 白贵霞[1] 党亚民[1] 

机构地区：[1]中国测绘科学研究院,北京100830 [2]同济大学测量与国土信息工程系,上海200092 [3]河海大学地球科学与工程学院,南京210098

出　　处：《空间科学学报》2014年第1期46-52,共7页Chinese Journal of Space Science

基　　金：国家自然科学基金项目(41374014,41174023);北斗分析中心项目(GFZX0301040309)共同资助

摘　　要：分析了COSMIC掩星数据反演电子密度的方法,利用实例研究反演方法的特点,并采用ISR非相干散射雷达获取的电子密度数据进行验证,进而反演了长三角区域SHAO(IGS)站上空在日全食和太阳风暴期间的电子密度廓线图.通过与平静日期间电离层电子密度进行比较,发现日全食及太阳风暴导致电离层发生的异常变化,从而提出COSMIC掩星数据反演电子密度在监测电离层变化时所具有的优势.The paper introduces the method of electron density inversion using COSMIC occulta- tion data, and advantages of the inversion method are analyzed using practical calculation. Mean- while, electron density profiles obtained from ISR （Incoherent Scattering Radar） are compared and analyzed with those from COSMIC occultation. Finally, electron density profiles over the SHAO （IGS station） which is located in Yangtze river region, are reversed using COSMIC occultation mea- surements during the total solar eclipse and the solar storm, and are compared with electron density profiles during the quite day. Ionospheric anomaly caused by the total solar eclipse and the solar storm are analyzed. The advantages of the inversion method from COSMIC occultation data have been found by using inversion method to monitor the ionosphere anomaly.

关 键 词：COSMIC掩星 非相干散射雷达 电子密度 

分 类 号：P352[天文地球—空间物理学]