车载通信系统电磁干扰余量评估

随着科学技术的发展,车载通信系统面临的电磁干扰问题愈加突出.针对车载通信系统的干扰余量评估问题,基于四级筛选法,文中提出了一种新颖的车载通信系统电磁干扰余量评估方法.依次对车载接收机的工作条件、工作频率、信号功率和通信性能进行评估,以定量表述车载接收机的干扰余量及受扰情况.针对干扰源对接收机灵敏度的影响,该方法选取了通...

EMI Margin Assessment of Vehicular Communication System

With the development of science and technology, the electromagnetic interference in the vehicular communication system becomes more and more obvious. In view of the interference margin assessment of the vehicular communication system, this study proposes a novel evaluation method of electromagnetic interference margin of the vehicular communication system based on four-level screening method. The working conditions, frequency, signal power and communication performance of the vehicular receiver are evaluated respectively to display the disturbed situation and interference margin of the vehicular receiver quantitatively. Aiming at the influence of interference source on receiver sensitivity, the communication distance, signal-to-noise ratio and bit error rate are selected to evaluate the performance of vehicular communication system by this method. The results show that compared with the traditional four-level screening method, this method can more comprehensively reflect the performance changes of communication system with interference.