Hengqing Sun

Design of an Ultrawideband Ionosonde

In this letter, an ultrawideband ionospheric sounding system was designed for ionospheric research and communication channel management. The frequency band of this ionosonde ranges from high frequency to very high frequency. It can be flexibly used at both monostatic and bistatic stations as a GPS receiver module was integrated. The system design includes three major components: control system, transmitting system, and receiver system. The operational parameters, such as frequency, waveform, and modulation type, can be manually reset. Correlation and Fourier algorithms are used to obtain a high signal-to-noise ratio and enlarge the detection range. The typical experimental results demonstrate that the proposed system can be used to study the ionosphere effectively.

The hardware design of a new ionospheric sounding system

The ionospheric sounding system is a type of high-frequency over-the-horizon skywave radar developed for ionospheric research and HF channel management. The hardware system of a portable low-power multifunctional ionospheric sounding system is presented in this paper. The device can be used for typical ionospheric sounding and spectrum monitoring at monostatic and bistatic station. The system structure and the primary module are depicted in detail. Typical experimental results demonstrate that the design of this device is successful for ionospheric researching.