| 地震记录的时间域反褶积、仿真及在地震计方位角相对测量中的应用 |
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| 引用本文： | 谢剑波.地震记录的时间域反褶积、仿真及在地震计方位角相对测量中的应用[J].地球物理学报,2014,57(1):167-178. |
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| 作者姓名： | 谢剑波 |
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| 作者单位： | 1. 广东省地震局, 广州 510070;
2. 中国地震局地震监测与减灾技术重点实验室, 广州 510070;
3. 地震预警和重大工程安全诊断广东省重点实验室, 广州 510070 |
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| 基金项目： | 中国地震局测震台网青年骨干培养专项（20120109）资助. |
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| 摘 要： | 介绍了一种用冲击不变法从速度响应平坦地震计二阶传递函数设计得到的递归滤波方法，比用双线性变换得到的递归滤波系数少，因此使用更方便.作者用此方法作了反褶积与仿真的数值实验和实际地震记录的短周期仿真试验，仿真结果与实际仪器记录符合较好；并将此法应用于地震计方位角的相关分析法相对测量，结果与不仿真的相关分析测量相比更接近寻北仪的绝对测量结果.
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| 关 键 词： | 反褶积 仿真 时间域 地震记录 地震计方位角 相对测量 |
| 收稿时间： | 2013-03-25 |
Deconvolution,simulation of seismic records in the time domain and application in the relative measurements of seismometer orientation |
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| XIE Jian-Bo.Deconvolution,simulation of seismic records in the time domain and application in the relative measurements of seismometer orientation[J].Chinese Journal of Geophysics,2014,57(1):167-178. |
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| Authors: | XIE Jian-Bo |
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| Institution: | 1. Earthquake Administration of Guangdong Province, Guangzhou 510070, China;
2. Key Laboratory of Earthquake Monitoring and Disaster Mitigation Technology of CEA, Guangzhou 510070, China;
3. Key Laboratory of Earthquake Early Warning and Safety Diagnosis of Major Projects of Guangdong Province, Guangzhou 510070, China |
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| Abstract: | This paper introduces a recursive filter designed from the second order transfer function of a velocity-flat-response seismometer by impulse invariance. This filter includes less coefficients than the one designed by bilinear transformation and its usage is more convenient. Numeric experiments using this recursive filter have been done for deconvolution and simulation. A short period record was also simulated from a real broadband earthquake event record. All the simulated results are conformed very well consistent with real system records. Some relative orientation measurements of seismometer with cross correlation analysis method have been conducted with the aids of simulation. The results are more close to absolute measurements with north finder than the results without simulation. |
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| Keywords: | Deconvolution Simulation Time domain Seismic records Seismometer orientation Relative measurement |
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