中文摘要：

为了提高水面目标的红外隐身性能,通过雾状水幕衰减计算,分析了水雾衰减性能;通过雾状水幕对复合平板的降温和遮蔽试验,测量了施加水幕前后试验板红外线信号衰减程度、目标温度时间响应特性.计算和试验表明,具有一定浓度的雾状水幕可以有效地衰减红外辐射的传输,同时可以在短时间内迅速改变试验板的红外辐射特征.根据红外成像探测模型,对水面目标应用雾状水幕前后的红外探测距离和成像距离的变化进行了分析.使用雾状水幕的水面目标红外发现距离降低了约25%,而红外成像距离降低了约19%.结果表明雾状水幕是一种有效的红外隐身方法,可在水面目标红外隐身方面推广应用.

英文摘要：

In order to improve the infrared stealth of water surface object,the attenuation character of water spray on infrared radiation was numerically investigated.The infrared attenuation and temperature response of the composite test board were measured before and after the water sprayed.The numerical and experimental results show that water spray with a certain concentration can decrease infrared transmission efficiently and change the infrared radiation feature of the test board quickly.According to the detective model of infrared system,the detective distance and image distance were analyzed with and without water spray between infrared imager and water surface object.The analysis result demonstrates that the detective distance of water surface object decreases about 25% and image distance decreases about 19% after water spray system was turned on,which tells that water spray is an effective method for infrared stealth and it can be widely used in the infrared stealth of water surface object.