基于相关法的高频阻波器阻塞特性的测量

介绍电子载波高频阻波器的组成,提出了将传统的相位差检测的方法,引入到电力阻波器的高频参数的测试中。该方法直接对两被测信号作互相关运算,并利用相关和正弦函数的有关性质,使部分噪声分量被有效地与有用信号分离,得出比较精确的测量结果。在阐述了相关法的检测原理之后,给出了用MATLAB对系统采样的仿真实例,证实了该方案的可行性;同时画出了主要的系统结构设计框图,作为制作阻波器特性测试仪的一种参考模型。

High Frequency Blocking Characteristics Measurement of the Power Line Trap Based on Correlation Theory

This article briefly introduces the composing of high-frequency wave trapper, and a new method based on traditional correlation theory is presented. Cross-correlation functions of the two measured signals are directly computed and some properties about correlation and sine function are adopted to separate the useful signals from the part noises, so the measurement accuracy is improved. The conclusions are supported by the results of simulation experiments. Primary chart of systemic configurable design is drawn as a model to make apparatuses for wave trapper measurement.