摘要
EMI的定位测试是电磁兼容测试的一个重要内容。传统的干扰源定位测试方法相对大型的电子设备而言效率和准确度都有限。本文提出一种基于空间谱估计技术的EMI定位方法,该方法使用二维空间平滑算法对电磁干扰信号进行DOA(波达方向)估计从而精确定位电磁干扰源。在MATLAB平台上编写了相关程序进行了模拟实验,实验结果证明,该方法不仅可以区分不同频率的干扰而且可以定位同频的干扰,可以为实际应用提供参考。
EMI localization is an important part of electromagnetic compatibility test. The efficiency and accuracy of interference localization is limited if only the traditional test method is applied. An EMI localization method based on spectrum estimation is presented to locate EMI. This method uses 2-D spatial smooth algorithm to estimate the DOA of electromagnetic interference. The EMC engineer can locate the EMI based on its DOA. The related program was written based on MATLAB for experiments. The results of experiment prove that this method can locate the EMI.
出处
《微型机与应用》
2015年第7期69-71,共3页
Microcomputer & Its Applications
