关键词: 电子技术 , 红外成像 , 烟幕 , 探测 , 干扰 , 温差

Abstract: The detecting and guidance technology of IR thermal imaging occupies an important position in mod?ern 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 ex?periment results are consistent with theoretic results.

Key words: electronic technique , infrared image , smoking screen , detecting , interference , temperature differ? ence