摘要
激光遥感探测技术具有信息传输速度快、操作方便、高精度和远距离探测等优点,可以很好地弥补地震勘探在地形复杂区域中存在的施工难度大、地震数据采集慢等缺点。利用波前传感器具有的高灵敏度、高探测效率和离轴探测等特点,将其用于地震波激光遥感探测之中,改进前期研究中由于迈克尔逊干涉法存在慢变化导致的信号处理复杂等问题。通过搭建激光遥感探测系统,对地震波中的纵波进行观测和分析,探讨了地面振幅与波前传感器测量光斑的关系。试验表明,该系统对低频地震波响应更加良好,解决了仪器本身自然频率的干扰,离轴探测的特性使得反射信号的采集更加便利,为地震波激光遥感探测提供了试验参考。
Laser remote sensing detection technology has the advantages of fast information transmission,convenient operation,high precision and long-distance detection,and it can make up for the shortcomings of seismic exploration in complex terrain areas,such as difficult construction and slow seismic data acquisition.Utilization the characteristics of high sensitivity,high detection efficiency and off-axis detection of wavefront sensor,which used in seismic wave laser remote sensing detection to refinement the signal processing complexity caused by slow change of Michelson interference method in previous studies.By setting up the laser remote sensing detection system,the longitudinal waves in seismic waves are observed and analyzed,and the relationship between ground amplitude and wavefront sensor measurement spot is discussed.Experiments show that the system has better response to low frequency seismic waves,which solves the interference of natural frequency of the instrument itself.The characteristics of off-axis detection make the acquisition of reflection signals more convenient,which provides experimental reference for seismic wave laser remote sensing detection.
作者
石和平
王平
苏金善
Shi Heping;Wang Ping;Su Jinshan(Xinjiang Laboratory of Phase Transitions and Microstructures in Condensed Matters,Yili Normal University,Yining 835000,Xinjiang,China;Key Laboratory of Signal Detection and Control Technology,YiliNormal University,Yining 835000,Xinjiang,China)
出处
《应用激光》
CSCD
北大核心
2023年第3期111-117,共7页
Applied Laser
基金
国家自然科学基金(62165015)。
关键词
波前传感器
激光遥感
波前
地震波
wavefront sensor
laser remote sensing
wavefront
seismic wave
