基于局域网的电磁干扰仿真

Electromagnetic Interference Simulation based on LAN

模拟部队指挥控制通信受到的电磁干扰,对增强模拟训练的战场真实性,提高部队战斗力具有重要意义。针对指挥控制系统通信所受到的电磁干扰情况,对电磁干扰进行了分类,引入各类噪声模型,并以调幅噪声干扰调频信号为例论述了电磁干扰的原理。在此基础上,通过MATLAB生成或采集真实噪声的方法产生离散噪声数据,利用低级波形函数对语音信号进行PCM编码,同时将噪声数据与语音数据叠加,实现对基于局域网的电磁干扰的仿真。

It makes important sense to simulate EMI in army command and control communication. It makes simulation training run as in real battlefield, and improves battle effectiveness. Aiming at the EMI in army command and control communication, this paper classifies the EMI, and introduces some noise models. Then takes EMI between FM and AM signals as an example to discuss the EMI theory. Based on it, this paper introduces the EMI simulation method of how to produce discrete noise data by using MATLAB or sampling from actual noises, and how to PCM code sound by lowclass wave function, then how to plus.the noise data and sound data.