精密控制震源发射信号设计方法研究
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摘要
考虑到精密控制震源特点,研究了多种精密控制震源发射信号的设计方案,并提出离散点拟合精密控制震源信号设计方法。计算表明,按照发射频谱、相关子波形态和发射能量3个方面的评价,离散点拟合精密控制震源信号设计方法可以灵活设计出比较好的精密控制震源发射信号,对提高精密主动地震监测的震相信息分辨率具有实际意义。
Taking the features of Controlled Accurately Seismic Source(CASS)into account,various design methods of chirp signal for CASS are discussed,and a new method with fitting of discrete points to design chirp signal for CASS is given out in this paper.It is demonstrated that the new method is able to design better chirp signal for CASS assessed by radiated spectrum and energy,wavelet of cross-correlation.It is practicable and meaningful in improvement of phase resolution in actively seismic monitoring.
Taking the features of Controlled Accurately Seismic Source(CASS)into account,various design methods of chirp signal for CASS are discussed,and a new method with fitting of discrete points to design chirp signal for CASS is given out in this paper.It is demonstrated that the new method is able to design better chirp signal for CASS assessed by radiated spectrum and energy,wavelet of cross-correlation.It is practicable and meaningful in improvement of phase resolution in actively seismic monitoring.
引文
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金昊.可控震源伪随机扫描技术研究[D].吉林大学,2006．
廖成旺,庄灿涛,梁鸿森.精密可控常时震源系统(ACROSS)的初步试验[J].中国地震,2003,19(1) :89-96．
林君.电磁驱动可控震源地震勘探原理及应用[M].北京:科学出版社,2004．
陶知非.可控震源扫描信号设计中一些问题的考虑[J].物探装备,2001,11(1) :9-15．
陶知非,王迎春,吕雯节编译.VE432控制系统与可控震源培训手册(四)[J].物探装备,2001,11(1) :294-299．
王洪体,庄灿涛,薛兵,等.精密主动地震监测[J].地球物理学报,2009,52(11) :1 808-1 815．
Enanov A F,Zhemchugova.Digital processing of vibration signals at deep seismic researches[J].First International Workshop on Active Monitoring in the Solid Earth Geophics,2004:S4-P04．
Kunitomo T,Kumazawa M.Active monitoring of the earth's structure by the seismic ACROSS-Development of the seismic ACROSS and continuous transmission at Tono Mine ACROSS Station[J].First International Workshop on Active Monitoring in the Solid Earth Geophics,2004:S4-P03．
Kunitomo T,Kumazawa M.Active monitoring of the earth's structure by the seismic ACROSS-Transmitting and receiving technologies of the seismic ACROSS[J].First International Workshop on Active Monitoring in the Solid Earth Geophics,2004:S4-04．
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