We can get realtime information of the distant ionosphere by using the Ionospheric Oblique Backscattering System
which adopts discontinuous wave mechanism.Having analyzed the characteristics of the ionospheric echo Doppler spectra
the signal preprocessing is developed in this paper
which aims at improving the Doppler spectra.The results indicate that the preprocessing not only makes the system has higher ability of target detection but also suppresses the radio frequency interference by 6
7
dB.
关键词
斜向返回探测回波信号预处理射频干扰
Keywords
oblique backscattering soundingsignal preprocessingradio frequency interference