一种新型时域反射系数近似方法  

A novel approximate technique of time-domain reflection coefficient

作　　者：刘芫健[1] 张业荣[1] 朱洪波[1] 曹伟[1] 

机构地区：[1]南京邮电大学电子科学与工程学院,江苏南京210003

出　　处：《电波科学学报》2012年第1期73-77,共5页Chinese Journal of Radio Science

基　　金：国家自然科学基金(60671065);973计划资助(2007CB310603);江苏省高校自然科学基金项目(11KJB510015)

摘　　要：提出一种新型时域反射系数渐进公式,该公式形式简单且不受截断误差影响,解析式完备且结果精确,可有效地提高时域射线跟踪法的预测精度。用新方法对室内超宽带信号的平均功率延迟分布进行了预测,仿真结果和公开发表的文献结果相比,一致性良好。研究工作证明:新型时域射线跟踪法是预测超宽带信号传播特性的一种有效方法。A novel approximate formula of time-domain reflection coefficient is put forward.The form is simple and its precision is not affected by the truncation errors.In addition,the form has the self-contained analytic formula and exact result.The average power delay distribution is predicted by this method for indoor ultra-wideband（UWB） signal.Good agreement is achieved between the simulated results and the published results.It is proved that the novel method of time-domain ray tracing is effective to predict the propagation characteristics of UWB signal.

关 键 词：时域射线跟踪法 反射系数 渐进公式 超宽带 

分 类 号：TN929.53[电子电信—通信与信息系统]