Earthquake Location Technology for Hidden Vibrating Source
Hidden target detection and location is one of the key points of military protection engineering,but it is difficult to realize with conventional optical or imaging technologies.In response to this problem,this article first reviews and summarizes the development and ap-plication of earthquake location technology,which shows that seismology methods also have significant advantages in detecting and locating hidden vibration targets.Then,using the mi-croseismic data collected from the western Qaidam Basin in China,the microseisms were lo-cated by nonlinear location method and double-difference method.The results indicate that:1)Compared with the nonlinear location method,the double-difference method results in a more concentrated distribution of microseisms and clearer boundaries between microseismic clusters,which are more consistent with known fault structures;2)The error of relocation has been reduced by an order of magnitude,and the horizontal and depth errors of most mi-croseisms after nonlinear location are within 1000m,while the error of double-difference method is controlled within 100 m.The study confirms the feasibility of using seismic posi-tioning technology to detect hidden vibration targets.
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