Time Delay Estimation of Seismic Signal by Virtual Instrument

摘要：

Time delay estimation is the basis of target location of multi-sensor network, while the basic analysis of the signal and preliminary time delay analysis of the signal is of key importance to the time delay estimation. In this paper, a time delay analysis system for seismic signals of vehicle is designed by virtual instrument development tools. The analysis system contains: a virtual oscilloscope, a virtual spectrum analyzer, a virtual filter and a virtual time delay analyzer. This analysis system is used for a set of field collected seismic target signal. Firstly, the spectrum of the seismic signal is analyzed. Analysis shows the main frequency of the target signal: 13Hz, 85Hz, 170Hz and 12SHz. The frequency components of 13Hz and 85Hz are the same to the acoustic frequency components of the vehicle in the same experiment. Secondly, a filter is designed according to the spectrum, and then the signal is filtered. At last, the time delay estimation has been carried out for several sampling data segments selected by certain rules, and curve of the time delay vs. time is given. The regular pattern of the time delay curve is consistent with the target motion. Application reveals that the system is helpful in the research of time delay estimation.

关键词： seismic signal time delay estimation virtual instrument

作者: Li Ming Jiang Chunlan Wang Zaicheng Yuan Zi

作者单位: State Key Laboratory of Explosion Science and Technology Beijing Institute of Technology, Beijing, C North Institute for Scientific & Technical Information CNGC Beijing, China

会议类型: 国际会议

会议名称: 2010 International Conference on Measurement and Control Engineering(2010年IEEE测量与控制工程国际会议 ICMCE2010)

会议地点: 成都

会议语种:英文

页码: 208-211

在线出版日期: 2010-11-16（万方平台首次上网日期，不代表论文的发表时间）