中文摘要：

为解决目前头盔显示器中存在佩戴舒适性差等问题,提出采用无线通信技术来代替有线电缆。以机载狭小座舱环境为研究对象,通过分析无线信号在机载座舱空间内的传输特性,以Jakes模型为基础,结合飞行员头部运动规律,提出了一种新的多普勒频移表达式,并通过Matlab对改进的Jakes模型进行仿真分析,从仿真结果看出,改进Jakes模型的自相关函数曲线和互相关函数曲线与理论值更加接近,具有更好的二阶统计特性,可以应用于机内无线信道建模研究。

英文摘要：

To solve the problem that the helmet-mounted display is not so comfortable for wearing, we put forward a method to replace the cable with wireless communication technology. Taking the small cockpit environment as the object for study, we analyzed the transmission characteristics of the wireless signal in the cockpit space, and proposed a new Doppler shift expression based on Jakes model together with the head movement regularity of the pilot. Simulation was made with Matlab to analyze the performance of the improved Jakes model. The simulation results show that ： the autocorrelation function curve and cross-correlation function curve of the improved Jakes model is more close to the theoretical value, which has better second-order statistics, and is applicable for modeling of the wireless channel.