| 时频联合分析地震计正弦标定数据 |
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| 引用本文： | 刘明辉,;林湛,;周银兴,;马士振,;崔仁胜,;吴卫远.时频联合分析地震计正弦标定数据[J].地震地磁观测与研究,2014(1):231-235. |
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| 作者姓名： | 刘明辉 ;林湛 ;周银兴 ;马士振 ;崔仁胜 ;吴卫远 |
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| 作者单位： | [1]中国地震局地震预测研究所,中国北京100036; [2]北京市地震局,中国北京100080; [3]北京港震机电技术有限公司,中国北京102628 |
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| 基金项目： | 中国地震局地震预测研究所基本科研业务费专项（编号20101ES0201）资助 |
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| 摘 要： | 介绍短时傅里叶变换，分析地震计正弦标定信号的特点，提出基于时间域和频率域联合分析正弦标定波形组起始点的方法，可以准确找出每组正弦标定信号的频率和振幅，计算地震计的速度响应灵敏度。
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| 关 键 词： | 地震计 正弦标定 短时傅里叶变换 时频联合分析 |
Time-frequency joint analysis on sine calibration data of seismometer |
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| Institution: | Liu Minghui, Lin Zhan, Zhou Yinxing, Ma Shizhen, Cui Rensheng, Wu Weiyuan(1) Institute of Earth Science, China Earthquake Administration, Beijing 100036, China 2) Earthquake Administration of Beijing Municipality, Beijing 100080, China 3) Beijing Gangzhen Mechanical ＆ Electronic Technology, Beijing 102628, China) |
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| Abstract: | In this article,the authors describe the short-time Fourier transform.Introduce the char-acteristics of the sine calibration signal of seismometer in time domain and frequency domain, propose an algorithm for identifying the starting and ending points in calibration data base on the joint of time-domain and frequency domain first time.Using this algorithm,we can accu-rately identify each sine calibration signal frequency and amplitude,and then calculate the velocity response sensitivity of seismometer. |
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| Keywords: | seismometer sine calibration short-time Fourier transform joint of time-frequency analysis |
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