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Channel Measurements and Characterizations for Long Range Air-to-Ground Communication Systems in the UHF Bandopen access

Authors
Kim, JaesinLee, Inkyu
Issue Date
2022
Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
Keywords
Sea measurements; Loss measurement; Aircraft; UHF measurements; Atmospheric modeling; Antenna measurements; Earth; Air-to-ground; long range communication systems; channel characterization; UHF band
Citation
IEEE ACCESS, v.10, pp.101880 - 101888
Indexed
SCIE
SCOPUS
Journal Title
IEEE ACCESS
Volume
10
Start Page
101880
End Page
101888
URI
https://scholar.korea.ac.kr/handle/2021.sw.korea/146090
DOI
10.1109/ACCESS.2022.3208378
ISSN
2169-3536
Abstract
In this paper, we consider long range air-to-ground (AG) communication systems which support aeronautical platforms including unmanned aerial vehicles (UAVs) in the ultra high frequency (UHF) band. For such a system, we present the measurement based path loss analysis and multipath characteristic results at the distance of hundreds of kilometers. To this end, the experimental AG channel measurement system is implemented at the aircraft with various ground station (GS) environments. Through realistic flight tests, we observe the path loss behaviors for long range UHF channels with sea and ground earth surface reflections. By comparing the measurement results with the empirical path loss model and the spherical earth two-ray model, we demonstrate that our measurement results match well with the model. Moreover, for the multipath channel characterization, we provide field test results on the occurrence probability, delay, and power of multipath components in hilly and mountainous environments with various altitudes of the aircraft.
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공과대학 (전기전자공학부)
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