Influence of Irregular Terrain on LF One-Hop Sky-Wave Propagation Delay in the Presence of Natural Magnetic Field
- 19 July 2023
- journal article
- research article
- Published by Institute of Electrical and Electronics Engineers (IEEE) in IEEE Antennas and Wireless Propagation Letters
- Vol. 22 (10) , 2570-2574
Abstract
Studying the impact of terrain undulation on low frequency (LF) sky-wave propagation delay is of great signifi-cance for exploring the potential applications in low-ionospheric detection, remote navigation, and timing service. This letter combines gradient ionospheric parameters and uses the finite-difference time-domain (FDTD) method to calculate the reflected signal of LF radio waves from the ionosphere. Using the sky- and ground-wave separation technology in time domain, the variation law of LF sky-wave propagation delay with terrain changes is given in both daytime and nighttime models. At the same time, this letter also analyze the influence of different ionospheres (in the presence or absence of natural magnetic field) on LF one-hop sky-wave propagation delay, providing some reference significance for studying the propagation characteristics of LF sky waves.Keywords
Funding Information
- National Natural Science Foundation of China (62171265)
- General Project Foundation of Science and Technology Department of Shaanxi Province of China (2020SF-286)
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