| 差分式伸缩仪信号功率谱估计 |
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| 引用本文： | 杨江,徐春阳,吕宠吾.差分式伸缩仪信号功率谱估计[J].大地测量与地球动力学,2007,27(Z1):146-148. |
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| 作者姓名： | 杨江 徐春阳 吕宠吾 |
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| 作者单位： | 中国地震局地震研究所，武汉 430071 |
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| 摘 要： | 介绍对信号进行功率谱估计的方法，对差分结构的伸缩仪3个月试验数据信号进行的功率谱估计表明,差分式结构能明显增强仪器的抗干扰能力和提高输出信号的信噪比。
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| 关 键 词： | 伸缩仪 功率谱估计 抗干扰能力 差分结构 信噪比 |
POWER SPECTRUM ESTIMATION OF SIGNAL OF DIFFERENTIAL EXTENSOMETER |
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| Yang Jiang,Xu Chunyang,Lu Chongwu.POWER SPECTRUM ESTIMATION OF SIGNAL OF DIFFERENTIAL EXTENSOMETER[J].Journal of Geodesy and Geodynamics,2007,27(Z1):146-148. |
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| Authors: | Yang Jiang Xu Chunyang Lu Chongwu |
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| Institution: | Institute of Seismology, CEA, Wuhan 430071 |
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| Abstract: | The method for estimating the signal power spectrum is introduced and the estimation of power spectrum of the signal data of differential extensometer recorded in Wuhan station for three months has been made.It shows that differential structure can improve significantly the anti interference capability of extensometers and increase the SNR of output signals. |
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| Keywords: | extensometer power spectrum estimation anti-interference capability differential structure signal-noise ratio |
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