HF Radio Angle-of-Arrival Measurements and Ionosonde Positioning

Since 2010 a 2nd generation NOAA MF/HF radar, also referred to as the VIPIR ionosonde, has been operated at Hualien, Taiwan (23.8973°N, 121.5503°E). The Hualien VIPIR ionosonde is a modern ionospheric radar, fully digitizing complex signal records and using multiple parallel receiver channels for simultaneous signal measurements from multiple spaced receiving antennas. This paper considers radio direction finding based on interferometric phase measurements from a horizontal antenna array in the Hualien VIPIR ionosonde system. We applied the Hermite normal form method to solve the phasemeasurement aliasing and least squares problems and improve the radio angle-of-arrival (AOA) measurements. Backward ray-tracing simulation has been proposed to determine radio transmitter position. This paper presents a numerical, step by step ray-tracing method based on the IGRF superimposed onto a phenomenological ionospheric electron density model, the TaiWan Ionospheric Model (TWIM). The proposed methodology is successfully applied to locate two experimental HF radio transmitters at Longquan and Chungli with distance errors within 5 km and less than 5% of the great circle distances.

並列關鍵字

Radio angle-of-arrival (AOA) measurement ； Ionosonde observation ； Radio wave propagation ； Ionosphere model ； Radio positioning

被引用紀錄

Macalalad, E. P. (2014). 應用基於GPS 無線電掩星電離層模式於單頻基碼單獨差分GPS 定位 [doctoral dissertation, National Central University]. Airiti Library. https://www.airitilibrary.com/Article/Detail?DocID=U0031-0412201512004710

延伸閱讀

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國際替代計量

HF Radio Angle-of-Arrival Measurements and Ionosonde Positioning

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