100㎒-26㎓ 대역에서 전파환경 및 지형 재질과 안테나 높이에 따른 전파통달거리 비교 연구

Abstract

In this thesis, a propagation model simulation was conducted to investigate the attenuation characteristics over 100㎒ to 26㎓ frequencies. Propagation models may be deterministic or empirical, depending on the analysis method. The frequency attenuation characteristics of 100㎒ to 26㎓ are analyzed through a propagation model simulation using a ray-tracing method that one of the deterministic model. The first simulation was performed using a 10 m omni-directional transmission antenna and a 1.5 m omni-directional receiving antenna in urban, sub-urban, and open environment. Second simulations were performed by changing several parameters, including the ground material (concrete, and PEC) and the height of the transmission antenna in open environment. Then, the results of these deterministic model simulations were compared with the empirical model that includes measurement results. The results of this study could be used as a criterion for estimating the value of frequency; however, for application to the further development of current communication technologies, more analysis is required.