一种基于双谱的正弦波初相估计方法  

Phase Estimation of Sinusoidal Signal Based on Bispectrum

作　　者：牛鹏辉[1] 涂亚庆[1] 

机构地区：[1]后勤工程学院,重庆400016

出　　处：《电测与仪表》2006年第10期1-3,共3页Electrical Measurement & Instrumentation

基　　金：国家自然科学基金资助项目(60272085)

摘　　要：高斯噪声背景下的单频实正弦波信号是工业现场遇到较多的一类信号,本文针对此类信号提出了一种基于双谱分析的正弦波初相估计方法。此方法在采样信号的基础上,重构出一路新的信号,该信号包含两个频率互成倍数的正弦波,再进行双谱分析,以实现正弦波初相的精确求解。仿真结果验证了该方法的有效性。The real single frequency sinusoidal signal under white Gaussian noise is common signal in industry. This paper presents a new method for phase estimation of sinusoidal signal based on bispectrum. A new signal containing two sinusoidal signals is reconstructed from originally sampling signal by the method. Then based on the bispectrum analyses of the new signal, the phase is estimated accurately. The simulation results show the effectiveness of the new method.

关 键 词：双谱 相位估计 高斯噪声 

分 类 号：TM933.311[电气工程—电力电子与电力传动]