高频返回散射回波频谱测量

本文采用脉冲多普勒雷达技术, 测量了电离层高频返回散射回波的时延-功率-多普勒频率的三维频谱图.对典型的频谱图作了分析, 并由谱图推算了电离层等效反射面的垂直运动速度, 它与垂直探测资料推算的结果相符. 

Measurements of the HF Backscatter Echo Spectra

In this paper, the HPbackscatter echo spectra measured by the technique of the pulse Doppler radar. The Doppler spectra are displayed in 3-dimensonal (time delay-power-Doppler frequency) spectrograms, i.e. the scatter function of the HPbackscatter propagation channal. The typical spectrograms are studied and the vertical motion velocity of the equivalent reflection height of the ionosphere are infered from the Doppler spectra. The values of the velocity are in accord with that infered from the vertical sounding data.