一种高效的自适应射线束追踪方法  

An efficient adaptive beam tracing method

作　　者：谭峻东 苏卓[1] 李兰[1] 龙云亮[1] 

机构地区：[1]中山大学电子与通信工程系,广东广州510006

出　　处：《电波科学学报》2014年第4期658-662,693,共6页Chinese Journal of Radio Science

基　　金：国家自然科学基金项目(61172026)

摘　　要：提出了一种高效的射线追踪方法.该扩展传统射线追踪法的射线管成射线束.射线束可以根据求解空间自适应裁剪,解决了传统射线追踪法对空间的离散采样问题;摒弃了接收球技术,还解决了接收球技术带来的双计误差.该方法采用了基于Pluecker坐标系的射线束-三角形碰撞检测算法,使得提出的射线束追踪法具有很高的计算效率.该方法成功地应用于复杂场景下室内信道的预测,并与已公开发表的论文的测量值进行对比,一致性良好.An efficient adaptive beam tracing method is proposed. The proposed method based on ray models the electromagnetic wave front by means of beam ate tile spatial sampling artifacts. In this method, uring traversing the environment; also the recepti ouble counting problem of traditional ray tracing the beam can on sphere is el An efficient b tion algorithm based on Pluecker coordinates is also di section algorithm, the proposed beam tracing method cy. The proposed method is applied to channel perditi scussed. Wi enjoys high on and its accuracy and efficiency is valid by comparing the be adaptive lmlnate earn triangle th this effici s to nntl ly spitted lntersec ent Inter efficien in complex indoor environment result in public literature.

关 键 词：射线追踪 Pluecker坐标系 复杂场景 电波传播 

分 类 号：TN958.93[电子电信—信号与信息处理]