利用高频返回散射技术探测电离层行波扰动

 电离层行波扰动(TIDs,Traveling Ionospheric Disturbances)是电离层一种周期性的电子浓度波动结构,它与上层大气内的声重力波运动有关.在前人的工作基础上,提出了利用高频返回散射技术判别TIDs的方法,建立了TIDs特征参数的理论研究方法.并通过分析多方位返回散射试验数据,研究定频返回散射回波信号群距离和跳距随时间、方位角的变化特征,提取了TIDs的运动周期、运动方向、波长等特征参数信息,从而实现对宽空间、大区域电离层波动特性的研究.

The Detection of Traveling Ionospheric Disturbances by High-Frequency Backscatter Sounding Technique

Traveling ionospheric disturbances (TIDs) are periodic electron density fluctuating structures.It is associated with the movement of gravity waves in the upper atmosphere.On the basis of the previous research of the pundit,the method used to identify the TIDs by the high frequency backscatter sounding data is presented,and the technique to obtain the TIDs character parameters is established.Via analyzing the mutibeam-direction backscatter data,the variation character of group path and skip distance with the time and azimuth is researched.And the TIDs parameters including movement period,direction,wavelength,et cetera are obtained.Finally,the research of ionospheric fluctuating characteristic in large areas is achieved.