Abstract

The Wuhan Ionospheric Oblique Backscattering Sounding System with the addition of an antenna array (WIOBSS-AA) is the newest member of the WIOBSS family. It is a multi-channel radio system using phased-array antenna technology. The transmitting part of this radio system applies an array composed of five log-periodic antennas to form five beams that span an area to the northwest of the radar site. The hardware and the antenna array of the first multi-channel ionosonde in the WIOBSS family are introduced in detail in this paper. An ionospheric detection experiment was carried out in Chongyang, Hubei province, China on 16 March 2015 to examine the performance of WIOBSS-AA. The radio system demonstrated its ability to obtain ionospheric electron density information over a wide area. The observations indicate that during the experiment, the monitored large-area ionospheric F2-layer was calm and electron density increased with decreasing latitude.

Highlights

  • Ionospheric research burgeoned in the 1920s when Appleton and Barnett of England confirmed the existence of the ionosphere

  • The WIOBSS was a monostatic digital ionosonde based on the VXI-Bus (VME eXtensions for Instrumentation)

  • A remote digital receiver with Global Positioning System (GPS) for frequency and monostatic digital ionosonde based on the VXI-Bus (VME eXtensions for Instrumentation)

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Summary

Introduction

Ionospheric research burgeoned in the 1920s when Appleton and Barnett of England confirmed the existence of the ionosphere. A remote digital receiver with Global Positioning System (GPS) for frequency and monostatic digital ionosonde based on the VXI-Bus (VME eXtensions for Instrumentation). The receivers digital receiver with Global Positioning System (GPS) for frequency and clock synchronization was can be used for ionospheric bistatic backscatter sounding, oblique incident sounding, as well as developed to work together with the WIOBSS in 2008 [11]. Universal Serial Bus (USB) and high-performance field programmable gate arrays (FPGA) were waveforms have been compared and reported [12]. The previous radio systems in the WIOBSS family were all high-performance field programmable gate arrays (FPGA) were applied in the new system. To monitor the large-area ionosphere, a new generation of the WIOBSS that incorporate a log periodic antenna array (WIOBSS-AA) is presented in this paper.

System Description
Transmitting
Receiving Part
Synchronization
Digital
Sketch
Log-Periodic
Comparison
Azimuthal
Array Calibration
Ultra-Wide
Experiment Facilities and Results
Inversion of the Backscatter
Conclusions

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