飞机通信系统内的中低频干扰抑制研究

Research on Low-frequency Interference Rejection in Airplane Communication System

针对机载电子设备间存在严重的电磁兼容问题,以某型飞机通信系统中存在的噪声干扰为例,详细研究了噪声的产生机理和抑制方法,进行了理论分析,在此基础上,就400Hz供电电路干扰下的机载通信电磁干扰抑制问题制定了详细的实施方案并进行了工程实现。实验分析和产品的量产使用效果证明了所述方法的有效性。

Serious EMC（Electro Magnetic Compatibility）issue exists between airborne avionics.For this issue,with the example of the noise jamming in a type of avionics communision system,the generation mechanism of noise signal and its suppression method are detailed researched with theoretical analysis being applied.On the base of these,detailed implementation program for noise jamming suppression is scheduled for avionics communision polluted by 400Hz power supply circuit,and then engineering realization is carried out.Experiment analysis and the effect during mass-producing demonstrate the validation of the mentioned method.