Design and implementation of hardware architecture in ionospheric oblique backscattering sounding system

The ionospheric oblique backscattering sounding system can not only be used to detect the state of ionosphere and the condition of high frequency channel in real time, but also be used for over-the-horizon sounding. So, it has a very high military and civil value. For the characteristics of ionospheric oblique backscattering sounding, such as long sounding distance, wake echo, strong background noise, slow moving target, etc., a hardware platform of ionospheric oblique backscattering sounding system is designed. This platform adopts the technology of software radio and is designed as a new kind of general-purpose, modularized, software-based ionosonde that is based on VXI (Versa module eurocard eXtensions for Instrumentation) bus. At present, this hardware platform has been successfully used in actual ionospheric oblique backscattering sounding, and the experimental results demonstrate that this system can satisfy the demands of ionospheric oblique backscattering sounding preferably. Foundation item: Supported by the National Natural Science Foundation of China (40474066)