摘要
电离层对流速度会显著影响电离层闪烁的发生,尤其是在具有较大对流速度的高纬极区,且其对相位闪烁指数和幅度闪烁指数影响各不相同.本文基于弱散射条件下电离层闪烁理论,初步构建了极区电离层闪烁指数与对流速度的显式关系模型,模型结果表明当相位谱指数取定值3时,相位闪烁指数和幅度闪烁指数的比值与对流速度存在线性关系;进而,利用加拿大Hall Beach台站的观测数据,验证了由电离层闪烁指数比值推断电离层对流速度这一方法在极区的适用性.这不仅提升我们对电离层闪烁机理的认识,也提供了一种获取极区电离层对流速度的新途径,将有助于改善和提高我国北斗全球导航系统的服务精度.
The ionospheric convection can affect the appearances of ionospheric scintillations significantly, and its effect on the occurrence of amplitude scintillation and phase scintillation is quite different, especially at the polar region where have large convection speed. Based on the weak scatter theory of ionospheric scintillation, this paper firstly establishes an explicit relationship between the scintillation indices and the convection speed, suggests that there is a linear relationship between the ratio of the phase and amplitude scintillation indices and the convection speed when the phase spectrum index is set to a fixed value of 3. Furthermore, we verify the applicability of this method for inferring drift speed from the ratio of scintillation indices in the polar region by using the observations from the Hall Beach station at Canada. The result not only deepens our theoretical understanding of ionospheric scintillation, but also provides a new way to obtain polar ionospheric connection speed, which will help us to improve the application accuracy of Beidou global navigation satellite system.
作者
陆盛
邢赞扬
邓忠新
张清和
王勇
王成
冯健
马羽璋
夏凯
LU Sheng;XING ZanYang;DENG ZhongXin;ZHANG QingHe;WANG Yong;WANG Cheng;FENG Jian;MA YuZhang;XIA Kai(Shandong Key Laboratory of Optical Astronomy and Solar-Terrestrial Environment,School of Space Science and Physics,Institute of Space Sciences,Shandong University,Weihai Shandong 264209,China;National Key Laboratory of Electromagnetic Environment,China Research Institute of Radiowave Propagation,Qingdao Shandong 266107,China;Qian Xuesen Laboratory of Space Technology,Chinese Academy of Space Technology,Beijing 100101,China;China Research Institute of Radiowave Propagation,Qingdao Shandong 266107,China)
出处
《地球物理学报》
SCIE
EI
CAS
CSCD
北大核心
2022年第10期3704-3713,共10页
Chinese Journal of Geophysics
基金
国家自然科学基金(42120104003,41874170,42074225)
中国电波传播研究所稳定支持科研经费项目(A132101W02)资助。
