DTD Simulation for Statistical Properties of Microwave Scattering and Attenuation Due to Randomly Distributed Rainfalls
Rain measurement system using propagation characteristics of microwave and millimeter wave is very important for disaster prevention system to foresee and prevent the occur-rence of disasters caused by strong rainfalls and for the sensor of ITS to support safe and automatic driving and cruising. In this study, propagation region is modeled as random media with randomly distributed rainfalls. Propagation of electromagnetic wave in random media is analyzed by three-dimensional FDTD method. FDTD analysis demonstrates the dynamic characteristics of wave scattering and absorption phenomena in rain region where raindrops are distributed randomly. Scattered field by single raindrop is compared with Rayleigh scattering theory to test the accuracy of numerical simulation. The effects of multiple scattering and absorption due to randomly distributed raindrops are evaluated numerically using small area analysis.
Yasumitsu Miyazaki Koichi Takahashi Nobuo Goto
Department of Media Informatics,Aichi University of Technology 50-2 Manori,Nishihasama-cho,Gamagori Institute of Technology and Science,The University of Tokushima 2-1 Minamijosanjima-cho,Tokushima 77
国际会议
Progress in Electromagnetics Research Symposium 2009(2009年电磁学研究新进展学术研讨会)(PIERS 2009)
北京
英文
1595-1600
2009-03-23（万方平台首次上网日期，不代表论文的发表时间）