| 飞行器尾焰红外辐射及其被动测距 |
| |
| 引用本文： | 路远,冯云松,凌永顺,乔亚.飞行器尾焰红外辐射及其被动测距[J].红外与激光工程,2013,42(7):1660-1664. |
| |
| 作者姓名： | 路远 冯云松 凌永顺 乔亚 |
| |
| 作者单位： | 1.脉冲功率激光技术国家重点实验室 合肥电子工程学院,安徽 合肥 230037; |
| |
| 基金项目： | 安徽省红外与低温等离子体重点实验室基金 |
| |
| 摘 要： | 旨在研究利用飞行器的尾焰辐射对飞行器进行被动测距。导弹和飞机发动机的排气系统是飞机在3~5 m波段的主要红外辐射源。建模计算了矩形喷管尾焰红外辐射特性，计算结果表明，不管观察方向如何，尾焰红外辐射强度色比是相同的。当辐射强度色比在大气中传输时，因为吸收和散射而被衰减，不同波长上红外辐射衰减幅度不同，辐射强度色比随着传输距离的改变而发生变化，色比包含了目标的距离信息。推导了目标尾焰色比与尾焰温度、辐射传输距离、大气消光系数之间的关系。计算了尾焰色比与尾焰温度的关系，推导出了红外三色比距离方程组，选取4.5、4.6、4.7 m三个波长对三色被动测距进行了研究。利用测距方程组画出了测距图。结果表明，利用该方法可对尾焰进行三色测距。
|
| 关 键 词： | 被动测距 尾焰 红外辐射 三色 大气衰减 |
| 收稿时间： | 2012-11-10 |
Infrared radiations of aerocraft exhaust plume and its passive ranging |
| |
| Lu Yuan
,
Feng Yunsong
,
Ling Yongshun
,
Qiao Ya.Infrared radiations of aerocraft exhaust plume and its passive ranging[J].Infrared and Laser Engineering,2013,42(7):1660-1664. |
| |
| Authors: | Lu Yuan Feng Yunsong Ling Yongshun Qiao Ya |
| |
| Affiliation: | 1.State Key Laboratory of Pulsed Power Laser Technology,Electronic Engineering Institute of Hefei,Hefei 230037,China;2.Key Lab of IR and Low Temperature Plasma of Anhui Province,Electronic Engineering Institute of Hefei,Hefei 230037,China |
| |
| Abstract: | Passive ranging an aerocraft using its exhaust plume infrared radiation was studied. Exhaust system of an aircraft or a missile is the main infrared radiant point in 3-5 m wave-band. The infrared radiant characteristic of rectangular nozzle flame was calculated by modeling. The result shows that the infrared radiation intensity color ratio of an exhaust plume is same in different direction. When the infrared radiation transmitted in the atmosphere, it would be attenuated by the absorption and dispersion of the atmosphere. The attenuation was different according to different wavelength. The radiation intensity color ratio of different wavelength would change along with the change of transmission distance. The radiation intensity color ratio contains distance information. The relationship among the color ratio of exhaust plume and its temperature, its transmission distance, and atmosphere attenuation coefficient were deduced. The relationship between color ratio of an exhaust plume and its temperature was calculated. Infrared three color ratio ranging equations were deduced. The three wavelength of 4.5, 4.6, 4.7 mm was used to study passive ranging method. A ranging figure was drawn using the equations. The result shows that the method can be used to range an exhaust plume. |
| |
| Keywords: | passive ranging exhaust plume infrared radiation three-color atmosphere attenuation |
| 本文献已被 万方数据 等数据库收录！ |
| 点击此处可从《红外与激光工程》浏览原始摘要信息 |
|
点击此处可从《红外与激光工程》下载全文 |
|
