그림 1. 일반적인 대기 수정굴절률의 덕트 trilinear model 모델링 Fig. 1. Duct trilinear modeling for the conventional modified refractive indices.
그림 2. 제안된 덕트맵 모델링과 영역분할 Fig. 2. The proposed duct map for the various duct types.
그림 3. 제주-진도 해안 지형을 포함한 덕트맵 Fig. 3. The duct map including the Jeju-Jindo coastal area.
그림 4. Case A와 Case B에 대한 수정굴절률 Fig. 4. The modified refractive indices for Case A and Case B.
그림 5. Case A의 거리에 따른 전파 경로손실 시뮬레이션 결과 Fig. 5. The simulated result of the path loss for Case A.
그림 6. Case B의 거리에 따른 전파 경로손실 시뮬레이션 결과 Fig. 6. The simulated result of the path loss for Case B.
그림 7. 경로손실에 대한 측정과 시뮬레이션 결과비교 Fig. 7. The comparison between the measured and simulated results for the path losses.
참고문헌
- J. Y. Kim, D. W. Chun, C. J. Ryu, and H. Y. Lee, "Optimization methodology of multiple air hole effects in substrate integrated waveguide applications," Journal of Electromagnetic Engineering and Science, vol. 18, no. 3, pp. 160-168, Jul. 2018. https://doi.org/10.26866/jees.2018.18.3.160
- H. G. Jeon, S. M. Shin, T. Hwang, and C. E. Kang, "Reverse link capacity analysis of a CDMA cellular system with mixed cell sizes," IEEE Transactions on Vehicular Technology, vol. 49, no. 6, pp. 2158-2163, Nov. 2000. https://doi.org/10.1109/25.901887
- P. Valtr, P. Pechac, "The influence of horizontally variable refractive index height profile on radio horizon range," IEEE Antennas and Wireless Propagation Letters, vol. 4, pp. 489-491, Dec. 2005. https://doi.org/10.1109/LAWP.2005.862065
- C. Kim, Y. B. Park, "Prediction of electromagnetic wave propagation in space environments based on geometrical optics," Journal of Electromagnetic Engineering and Science, vol. 17, no. 3, pp. 165-167, Jul. 2017. https://doi.org/10.5515/JKIEES.2017.17.3.165
- M. Wagner, P. Gerstoft, and T. Rogers, "Estimating refractivity from propagation loss in turbulent media," Radio Science, vol. 51, no. 12, pp. 1876-1894, Nov. 2016. https://doi.org/10.1002/2016RS006061
- A. Karimian, C. Yardim, P. Gerstoft, W. S. Hodgkiss, and A. E. Barrios, "Refractivity estimation from sea clutter: An invited review," Radio Science, vol. 46, no. 6, pp. 1-16, Dec. 2011.
- J. Pozderac, J. Johnson, C. Yardim, C. Merrill, T. Paolo, and E. Terrill, et al., "X-band beacon-receiver array evaporation duct height estimation," IEEE Transactions on Antennas and Propagation, vol. 66, no. 5, pp. 2545-2556, Mar. 2018. https://doi.org/10.1109/TAP.2018.2814060