确定地震计安装方位的相干性分析法
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摘要
无论地震计在地表或是井下使用,都必须精确定向。当地震计周围存在铁磁性物质时,使用传统的磁定向会引起非常大的误差。阐述了用待安装地震计和参考地震计获取的地脉动数据及事件数据进行相干性分析,精确确定待安装地震计安装方位的理论计算模型和实际操作方法。
Orientation is very important for a seismometer,whether it is installed on surface or in borehole.Orientation relying on magnitism must have error if there is ferromagnetism around the seismometer.The method of coherence analysing by use of ground pulsation and event data by two seismometers is presented to develop the calculation model and operation method for seismeter's orientation.
Orientation is very important for a seismometer,whether it is installed on surface or in borehole.Orientation relying on magnitism must have error if there is ferromagnetism around the seismometer.The method of coherence analysing by use of ground pulsation and event data by two seismometers is presented to develop the calculation model and operation method for seismeter's orientation.
引文
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3董长虹.MATLAB信号处理与应用[M].北京:国防工业出版社,2005.3Dong Changhong.Signal processing and application withMATLAB[M].Beijing:National Defence Industry Press,2005.(in Chinese)
2吕永清,蔡亚先,程骏玲.地震台仪器定向与磁偏角[J].大地测量与地球动力学,2006,26(2):120～123.2LüYongqing,Cai Yaxian and Cheng Junling.Orientation forthe seismic instruments and the magnetic declination[J].Journal of Geodesy and Geodynamics,2006,26(2):120-123.(In Chinese)
3董长虹.MATLAB信号处理与应用[M].北京:国防工业出版社,2005.3Dong Changhong.Signal processing and application withMATLAB[M].Beijing:National Defence Industry Press,2005.(in Chinese)