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中文摘要：
分析了激光声信号的理论模型。建立了研究不同水深条件下激光声特性的实验平台。研究结果表明：当水体深度在0～100m范围内逐渐增加时，激光声信号的两个相邻主峰时间间距越来越小；激光等离子体声波的峰值声压逐渐减小；空泡首次溃灭声波的峰值声压在0～20m范围内逐渐增加，在20～100m范围内逐渐减小；空泡溃灭声波峰值个数减少。
英文摘要：
The theoretical model of laser-induced acoustic signals is analyzed. The experimental platform is built to research characteristic of laser-induced acoustic signals. With the increase of water depth in 0 - 100 m, the time interval of adjacent peak pressures of laser-induced acoustic signals decreases. Peak pressures of acoustic signals induced by laser-plasma decreases. Peak pressures of acoustic signals induced by bubble collapse first increase in 04 20 m, then decrease in 20-100 m. Number of acoustic signals induced by bubble collapse decreases.
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