| 基于多重相关法的正弦信号初相检测方法 |
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| 引用本文： | 余威明,郑胜峰,楼梅燕. 基于多重相关法的正弦信号初相检测方法[J]. 宇航计测技术, 2011, 0(4): 63-66,47 |
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| 作者姓名： | 余威明 郑胜峰 楼梅燕 |
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| 作者单位： | 浙江工贸职业技术学院; |
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| 摘 要： | 分析了基于多重相关法的微弱正弦信号检测理论，并提出了一种新的正弦信号初相检测新方法。通过对原始信号进行多重自相关运算得到信噪比高，初相为零的参考信号，对参考信号和原始信号做互相关运算和自相关运算，通过解析求解即可提取原始正弦信号的初相信息，不需要知道原始正弦信号频率及幅度，尤其适合低信噪比下未知频率的正弦信号的初相估计，算法简单，准确度可以满足工程要求，具有一定的实用价值。
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| 关 键 词： | 相位测量 多重相关法 正弦信号白 噪声 |
Phase Estimation of Sinusoid Signal Based on Multi-layer Correlation |
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| YU Wei-ming ZHENG Sheng-feng LOU Mei-yan. Phase Estimation of Sinusoid Signal Based on Multi-layer Correlation[J]. Journal of Astronautic Metrology and Measurement, 2011, 0(4): 63-66,47 |
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| Authors: | YU Wei-ming ZHENG Sheng-feng LOU Mei-yan |
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| Affiliation: | YU Wei-ming ZHENG Sheng-feng LOU Mei-yan(Zhejiang Industry & Trade Vocational College,Wenzhou 325000) |
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| Abstract: | Weak sinusoidal signal detection based on multi-layer correlation is introduced and a new detection method for initial phase of sinusoid signal is proposed.Because the sinusoidal signal has a particular trait,do multi-layer correlation calculation of original signal,reference signal with high SNR is obtained whose initial phase is zero.The initial phase of sinusoid signal is got by cross-correlation and auto-correlation calculation of reference signal and initial signal without knowing the frequency and the... |
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| Keywords: | Phase measurement Multi-layer correlation Sinusoid signal White noise |
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