Wuhan Ionospheric oblique backscattering sounding system (WIOBSS): System description and initial results

The Wuhan Ionospheric oblique backscattering sounding system (WIOBSS) used for ionospheric research was established in Wuhan Hubei, China (30.35°N, 114.33°E). WIOBSS is a monostatic pulse Doppler radar using interpulse phase codes and pulse compression for good sensitively. The operating frequency of WIOBSS is optional in MF and HF band. The peak power of pulse is no more than 500W. There are two basic sounding modes, fixed frequency and sweep frequency modes. The ionospheric bitemporal response and scattering function can be measured in real time and the Doppler ionogram drawn by scattering function includes the information of group delay, multipath, Doppler frequency shift and spread with high resolution. Furthermore, a theory for measuring the phase data of backscattering echo based on pulse compression system is put forward and applied to WIOBSS.