To study the application of laser shearing speckle interferometric vibration measurement technology in acoustic resonance landmine detection, we present an experimental and theoretical study of the method for laser shearing speckle interferometric landmine detection based on time-average. The relationship between the out-of-plane displacement gradient generated by the sound wave on the ground and the phase change of the shearing interference laser is analyzed. A high-power loudspeaker is used as the source of sound wave excitation, and the laser shearing speckle interferometric vibration measurement system is used in landmine detection experiments to investigate the changes of laser shearing speckle interference fringes under different experimental conditions such as sound wave intensity, detection target, buried depth, and soil environment. The study reveals that it is feasible and effective to use laser shearing speckle interferometry to detect landmines, and it provides a theoretical and methodological basis for realizing the rapid scanning of acoustic-optic landmine detection.

中文翻译：

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使用激光散斑剪切干涉振动测量系统进行声震地雷探测

为研究激光剪切散斑干涉振动测量技术在声共振地雷探测中的应用，提出了基于时间平均的激光剪切散斑干涉地雷探测方法的实验和理论研究。分析了地面声波产生的面外位移梯度与剪切干涉激光相位变化的关系。以大功率扬声器作为声波激发源，利用激光剪切散斑干涉振动测量系统进行地雷探测实验，研究了不同声波强度等实验条件下激光剪切散斑干涉条纹的变化。探测目标、埋藏深度和土壤环境。