论文部分内容阅读
针对当前光电无源干扰烟幕在“大面积、长留空、全方位遮蔽”等方面的不足,提出超声波造雾大面积无源干扰新技术。分析了造雾液的配方组成、温度、湿度、外加气流等对超声波成雾效果的影响。试验表明,含吸湿性高效催化剂和有机物组分的造雾液成雾效果良好,其中高效催化剂A浓度为5%、有机物G为3%。在低温和高湿度条件下成雾性能更为突出。通过添加辅助气流的方式可加快成雾速度和改进成雾效果,比较超声波造雾前后的红外热图像发现:人体和人脸等可在造雾15min后降低10～15℃,表明超声波人造雾可明显降低目标的热红外特征。
Aiming at the shortcomings of the current optoelectronic passive smoke screen, such as “large area, long empty space, omnidirectional covering” and so on, a new technology of large area passive interference with ultrasonic fogging is put forward. The effects of the composition of the fogging liquid, temperature, humidity and applied air flow on the ultrasonic fogging effect were analyzed. The test shows that fogging effect of the fogging liquid containing hygroscopic high efficient catalyst and organic components is good, in which the high-efficiency catalyst A concentration is 5% and the organic matter G is 3%. The fogging performance is more prominent under the conditions of low temperature and high humidity. By adding auxiliary airflow, the speed of fogging can be accelerated and the fogging effect can be improved. Comparing the infrared thermal images before and after ultrasonic fogging, it can be found that human body and human face can reduce 10 ~ 15 ℃ after 15min fogging, Significantly reduces the thermal infrared signature of the target.