【摘要】 电离层高频多普勒效应是电离层扰动对被其反射的高频无线电波产生的影响。从多普勒频移可以获知电离层反射面的垂直运动(多普勒速度)等重要信息,对电离层扰动的监测和研究具有重要的意义。本数据集由北京北大站(116.31°E,40.00°N)电离层高频多普勒监测仪观测形成,通过接收经电离层反射的国家授时中心10 MHz标准授时信号,对接收信号与标准频率信号差拍后进行快速傅里叶(FFT)分析得到频移谱结果。通过该数据可获得信号的频移及对应的电离层多普勒速度等信息,能够为电离层空间环境研究和应用提供良好的数据支持。更多还原

【Abstract】 Ionospheric Doppler shift is the frequency shift of radio waves reflected by the disturbed ionosphere. The variations of the ionosphere, such as its vertical movements(Doppler velocity), can be obtained from the frequency shift. The important information is useful for monitoring and studying ionospheric disturbances. This dataset was generated by the ionospheric high-frequency Doppler shift monitor of the Peking University Ionosphere Station. The monitor received the short-wave time signal broadcast from the National Time Service Centre, and performed the Fast Fourier Transform(FFT) on the difference between the received signal and the standard reference signal to obtain the frequency shift spectrum results. The dataset can be used to obtain the Doppler shift and corresponding Doppler velocity, which can provide data support for space environment research and applications.更多还原