水下目标的激光双波段探测技术

Both wavelength laser fusion for detecting underwater target

研究了一种采用蓝绿波段激光、红外波段激光相结合的水下双波段激光探测技术,分析了红外波段激光击穿水辐射声波应用于水下探测的基本模式、探测特点及声信号的激发机理,实验研究了激光声信号的强度、波形、频谱等特性。实验结果表明,双波段激光复合探测模式可将空中光信道、水中声信道结合起来,具有强大的技术优势;激光声信号应用于水下探测,具有优良的脉冲特性及频谱特征。研究结果有助于推动激光在海洋中的探测应用。

The paper puts a new method to solve this problem with both wavelength laser fusion for detecting underwater target .The characteristics of the acoustic pulses created in water by short （sub-microsecond）, high power laser pulses are discussed. Experimental pulse shapes are analyzed .This makes a stride for pursing the feasibility of laser-acoustic underwater objects detection.