烟幕对红外成像探测干扰作用研究

红外热成像探测、制导技术在现代战争中占有重要地位。通过对红外热像仪的探测原理及烟幕对红外热像探测的干扰机理研究，探讨了冷烟幕和热烟幕对红外热像仪的干扰原理。烟幕箱实验表明，红外热像的探测能力随红外烟幕质量浓度的增加而降低。冷烟幕主要是通过烟幕粒子的吸收和散射作用干扰热像仪；而热烟幕除了具有吸收和散射作用外，还通过烟幕自身发射比目标强得多的红外辐射来屏蔽热像仪，从而起到干扰作用。理论分析与实验结果具有较好的一致性。

Research on Interference to Target Detection of IR Imaging by Smoke

The detecting and guidance technology of IR thermal imaging occupies an important position in modern war. The interference mechanism of cold smoke and heat smoke for IR thermal imaging set was studied through the detecting mechanism of IR thermal imaging set for target and the interference mechanism of smoke for IR thermal imaging. The smoke performance was studied in smoke chamber. The detecting ability of IR thermal imaging is decreased with the smoke mass concentration increasing. The interference mechanism of cold smoke for IR thermal imaging set is absorption and scattering of smoke particles. But heat smoke can screen IR thermal imaging set depending on stronger IR radiation than targets beside absorption and scattering. The experiment results are consistent with theoretic results.