摘要
本文提出了一种提取噪声中正弦信号的总体最小二乘方法。在采用信号增强技术降低观测噪声后 ,利用总体最小二乘方法估计被测信号参数可以得到比传统方法更好的分析结果。仿真实验表明 ,本文方法具有较好的噪声稳定性和较高的频域分辨能力 ,能准确地检测出频率非常接近的正弦信号 。
A new method based on the total least squares is proposed for sinusoidal retrieval.After reducing the noise by the technique of signal enhancement,the more extract approximation results than traditional approach can be achieved with the TLS method.Experimental results indicate that the method here has great improvement on the noise performance and frequency resolution and can detect effectively sinusoidals that have close spaced frequencies.
出处
《电子测量与仪器学报》
CSCD
2000年第2期6-10,共5页
Journal of Electronic Measurement and Instrumentation
关键词
正弦信号提取
总体最小二乘
信号增强
噪声
Sinusoidal retrieval
Total least squares
Signal enhancement
Singular value decomposition
