基于数字正交变换的相位差测量方法及误差分析  

A method & error analysis of phase difference measurement based on digital quadrature transformation

作　　者：宋长宝[1] 李志刚[1] 竺小松[1] 

机构地区：[1]合肥电子工程学院,安徽合肥230037

出　　处：《电路与系统学报》2006年第1期143-146,共4页Journal of Circuits and Systems

摘　　要：阐述了一种基于数字正交变换的相位差测量方法,理论上详细讨论和分析了取样数据长度、信噪比以及A/D转换器的量化比特数对相位差测量精度的影响,最后给出了数值仿真结果及结论。An algorithm of phase difference measurement based on digital quadrature transformation is presented. Length of sampled data, Signal-to-Noise Ratio and number of ADC quantization bits which influence precision of phase difference measurement are particularly discussed and analysed. Simulation results and conclusions are given.

关 键 词：数字正交变换 相位差测量 误差分析 

分 类 号：TP911[自动化与计算机技术]