基于双柱的小型无人机极化信道模型特性研究  

Performance of Polarized Channel Model of Small Unmanned Aerial Vehicle Based on Two-Cylinder

作　　者：骆泽群 王永川 闫云斌 LUO Ze-qun;WANG Yong-chuan;YAN Yun-bin(Army Engineering University,Hebei Shijiazhuang 050003,China)

机构地区：[1]陆军工程大学石家庄校区

出　　处：《现代防御技术》2019年第6期68-72,112,共6页Modern Defence Technology

基　　金：河北省自然科学基金资助项目(F2017506006)

摘　　要：利用基于双柱信道参考模型的几何理论,提出了一种基于极化多输入多输出(MIMO)的小型无人机信道模型。该建模方法提到了MIMO信道去极化现象,为分析计算交叉极化鉴别率(XPD)提供了一种机制。分析了极化MIMO模型中发射机侧单跳的XPD问题,并对散射体分布对XPD的影响进行了数值模拟。研究发现,极化MIMO信道的XPD取决于MIMO子信道和其阵列方向,在多极化天线系统设计中应充分考虑这一因素。A small UAV channel model is proposed based on polarization multiple input multiple output(MIMO) by using the geometric theory based on the two-cylinder channel reference model. This modeling method mentions the MIMO channel depolarization phenomenon and provides a mechanism for analyzing and calculating the cross polarization discrimination(XPD). The XPD problem of the singlehop on the transmitter side in the polarization MIMO model is analyzed,and the influence of the scatter distribution on XPD is numerically simulated. It is found that the XPD of a polarized MIMO channel depends on the MIMO sub-channel and its array direction. This should be fully considered in the design of multi-polarized antenna systems.

关 键 词：信道模型 小型无人机 多输入多输出 交叉极化鉴别率 信道建模 

分 类 号：V279[航空宇航科学与技术—飞行器设计] TN919.3[电子电信—通信与信息系统]