多极化天线系统能够在保持低天线间相关性的同时减小设备尺寸, 因此对于小型无人机的无线通信系统具有很大的潜力。利用基于双圆柱的几何理论, 提出了一种极化多输入多输出(MIMO)信道模型。几何方法用于模拟信道去极化, 其中散射体的MIMO信号强度由简化的射线追踪方法确定。该建模方法提供了一种分析计算MIMO极化信道脉冲响应(CIR)的机制, 并进一步推导出交叉极化鉴别(XPD)和MIMO信道的时频特性。此外, 还进行了适当建模参数的数值仿真分析。

Multi-polarized antenna systems are capable of reducing device size while maintaining low inter-antenna correlation, and thus have great potential for wireless communication systems of small UAVs. A polarization Multi-Input Multi-Output (MIMO) channel model is proposed based on the geometric theory of double cylinders. The geometric method is used to simulate channel depolarization, where the MIMO signal strength of the scatterer is determined by a simplified ray tracing method. The modeling method provides a mechanism for analyzing and calculating the MIMO polarized Channel Impulse Response (CIR), which can further deduce the time-frequency characteristics of cross-polarization discrimination (XPD) and MIMO channels. In addition, numerical simulation analysis of appropriate modeling parameters is performed.