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光电成像装备的猫眼效应使其易遭受激光主动侦察装备的探测,在光电装备成像质量变化允许的范围内,采用离焦的方式来减小猫眼目标的回波功率,可实现相应的隐身。在研究离焦对光电成像设备激光回波强度影响的基础上,利用实验的方法对猫眼目标隐身后的成像质量进行验证和评价,并对离焦后的图像进行清晰度增强。结果表明,通过离焦的方式可有效增大猫眼目标回波发散角,降低回波功率,并且离焦量越大,猫眼效应越弱。对离焦光电设备所采集的图像进行分析后发现,离焦量越大,图像高频分量越少,但是适当的离焦量所造成的成像质量下降在可接受范围内,并且通过采取相应的修复措施,光电成像设备的图像质量得到有效改善。
The ophthalmic effect of the optoelectronic imaging equipment makes it susceptible to the active detection of the laser. Within the range allowed by the change of the imaging quality of the optoelectronic equipment, the out-of-focus method can be used to reduce the echo power of the cat’s eye target to achieve the corresponding stealth. Based on the study of the influence of defocus on the laser echo intensity of the electro-optical imaging equipment, the imaging quality of the cat’s eye is detected and evaluated by experimental method, and the sharpness of the defocused image is enhanced. The results show that the defocused mode can effectively increase the divergence angle of the cat’s target echo and reduce the echo power, and the greater the defocus amount, the weaker the cat’s eye effect. After analyzing the images collected by the defocused optoelectronic devices, it is found that the larger the defocus amount, the less the high frequency component of the image, but the decrease of the imaging quality caused by the appropriate defocus amount is within the acceptable range, and by adopting the corresponding Remedial measures, the image quality of the photoelectric imaging device is effectively improved.