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基于距离选通原理,采用波长为532 nm、脉冲宽度为20 ns的Nd∶YAG激光器和距离选通ICCD成像系统,通过脉冲激光照射水下目标,ICCD系统同步选通接收,对漫射衰减系数约为0.45的8 m水深内的水下目标的成像能力进行了实验研究,获得了10 ns的图像选通效果和7 m的探测能力。实验结果表明,距离选通成像方法是一种快速、有效的水下目标探测和识别手段。
Based on the principle of distance gating, an Nd: YAG laser with a wavelength of 532 nm and a pulse width of 20 ns and a distance-gated ICCD imaging system are used. The underwater target is irradiated by a pulsed laser, the ICCD system is gated synchronously, and the diffuse attenuation coefficient The imaging performance of the underwater target at a water depth of about 8 m at a depth of about 0.45 was studied experimentally with an image gating effect of 10 ns and a detection capability of 7 m. The experimental results show that the distance gated imaging method is a fast and effective underwater target detection and identification method.