时延估计的LabVIEW实现

The Implementation of Time Delay Estimation in LabVIEW

LabVIEW是美国NI公司推出的一种G语言的虚拟仪器软件开发工具。该语言提供了强大的数值计算和信号分析能力.用GCC(广义互相关)法求时延是时域信号处理的一种常用方法,然而在实际工程应用中,所要处理的往往是离散信号,常规的数学方法并不能直接应用.文章介绍了GCC法求时延及其在LabVIEW中的实现,以及相应的VI子模块。

Labview is a tool of making Virtual Instrument software by Graphics Language, which is created by USA NI company. This language provides a great capacity of digital computing and signal analysis. The GCC analysis is one of the most common signal processing methods in time domain, but in engineering applications, the signal to be processed is discrete, to which usual mathematic method can t be applied directly. This article introduces the GCC of Time Delay Estimation and the corresponding VI, and so on.