부산대학교 도서관

Air-ground (AG) communication is a fundamental technology for integration of unmanned aerial vehicle (UAV) in the intelligent transportation system, the analysis and modeling of the propagation characteristics of AG wireless channel provide essential foundations for the design, optimization and performance evaluation of AG communication systems. To investigate the radio propagation channel modeling for low altitude UAV, this paper presents a narrowband channel measurement campaign on the campus environment at 2.4 GHz, and then the large- and small-scale channel model for the AG scenarios are established. Based on the measurement data, the channel parameters are extracted. The Log-distance path loss model is given herein, then shadow fading, small-scale fading channel characteristics are statistically analyzed for comprehensively describing the fading behavior. The second-order statistic parameters level crossing rate (LCR) and average fade duration (AFD) of propagation channel are analyzed. Our results will be useful in the modeling of AG channels and the performance analysis for UAV-enabled wireless communication systems.