复杂背景下红外点目标探测概率估算

毛峡; 常乐; 刁伟鹤

复杂背景下红外点目标探测概率估算

北京航空航天大学电子信息工程学院, 北京 100191

基金项目: 航天支撑技术基金资助项目

详细信息

中图分类号: TN 215
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出版历程
- 收稿日期: 2010-06-30
- 网络出版日期: 2011-11-30

Estimation for detection probability of infrared point target under complex backgrounds

School of Electronics and Information Engineering, Beijing University of Aeronautics and Astronautics, Beijing 100191, China

摘要

摘要: 红外成像系统对点目标的探测概率在实际应用中往往受到复杂背景的极大影响,而现有的计算方法并不能适用于复杂背景下的探测概率估算.首先从红外成像系统对点目标的作用距离模型出发,分析了探测概率与信噪比、作用距离的关系,推导出单一背景下红外点目标的探测概率估算方法;然后,利用红外成像系统的亮度-灰度函数,通过背景的红外图像灰度信息计算得到其红外辐射亮度;最后,引入概率统计的思想对单一背景下探测概率的估算方法进行了改进,提出了复杂背景下红外点目标探测概率的估算方法.实验结果表明:该估算方法可以有效评估实际应用中典型复杂背景对红外成像系统的点目标探测概率的影响.
- 探测概率 /
- 作用距离 /
- 复杂背景 /
- 红外点目标 /
- 红外成像系统 /
- 信噪比
Abstract: The detection probability of infrared(IR) imaging system for point target will always be affected by complex backgrounds, but present methods can not be applied in the condition of complex backgrounds. Beginning from the model of operating distance of IR imaging system for point target, the relationship between detection probability, signal-to-noise ratio(SNR) and operating distance was analyzed, the estimation method under single background was gained. Then through the gray-to-radiance function of IR imaging system, the background-s IR radiance with its gray-value information was calculated. At last, the esimation method for single background was improved and the method for estimating the detection probability of infrared point target under complex background was proposed. The experimental results demonstrated that this method could effectively estimate the detection probability of IR imaging system under complex background in practical applications.
- detection probability /
- operating distance /
- complex background /
- infrared point target /
- IR imaging system /
- signal-to-noise ratio(SNR)

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参考文献(1)

[1] Hundson R D.Infrared system engineering [M].New York:John Wiley & Sons Inc,1969:62-91 [2] Wu Hanping,Yi Xinjian.Operating distance equation and its equivalent test for infrared search system with full orientation[J].International Journal of Infrared and Millimeter Waver,2003,24(12):2059-2068 [3] Datta P K,Kumar A,Nijhawan O P.Range estimation of thermal imaging system from MRTD and MTF measurement[J].Optik,1994,97(1):1-3 [4] 吴晗平.红外点目标探测系统作用距离方程理论研究——基于探测率温度特性与背景影响[J].红外技术,2007,29(6):341-344 Wu Hanping.Operating distance equation for infrared point target detect system based on temperature characteristic of detectivity and background influence[J].Infrared Technology,2007,29(6):341-344(in Chinese) [5] Meitzler T J,Gerhart G R,Sohn E,et al.Detection probability using relative clutter in infrared images[J].IEEE Transactions on Aerospace and Electronic Systems,1998,34(3):955-962 [6] Gerhart G R,Bednarz E L,Meitzler T J,et al.Target acquisition methodology for visual and infrared imaging sensors[J].Optical Engineering,1996,35(10):3026-3036 [7] 祁蒙.红外成像系统的探测概率研究[J].激光与红外,2004,34(4):269-271 Qi Meng.Detection probability of IR search and track system [J].Laser & Infrared,2004,34(4):269-271(in Chinese) [8] 李润顺,袁祥岩,范志刚,等.红外成像系统作用距离的估算[J].红外与激光工程,2001,30(1):1-3 Li Runshun,Yuan Xiangyan,Fan Zhigang,et al.Operating range prediction of infrared imaging system[J].Infrared and Laser Engineering,2001,30(1):1-3(in Chinese) [9] 徐军.红外图像中弱小目标检测技术研究 .西安:西安电子科技大学技术物理学院,2001 Xu Jun.Research on the detection of small and dim targets in infrared images .Xi-an:School of Technical Physics,Xidian University,2001(in Chinese) [10] Diao Weihe,Mao Xia,Chang Le,et al.Operating distance evaluation method for infrared imaging system under complicated backgrounds[J].Electronics Letters,2009,45(25):1309-1310 [11] 刁伟鹤,毛峡,梁晓庚.复杂背景红外成像系统作用距离估算方法[J].北京航空航天大学学报,2009,35(8):1022-1026 Diao Weihe,Mao Xia,Liang Xiaogeng.Method for estimating operating distance of IR imaging system under complex backgrounds [J].Journal of Beijing University of Aeronautics and Astronautics,2009,35(8):1022-1026(in Chinese) [12] 宣益民,李德仓,韩玉阁.复杂地面背景的红外热像合成[J].红外与毫米波学报,2002,21(2):133-136 Xuan Yimin,Li Decang,Han Yuge.Synthetic infrared image of complicated terrain background [J].Infrared Millim Waves,2002,21(2):133-136(in Chinese) [13] 韩玉阁,刘荣辉,宣益民.复杂地面背景红外热像模拟[J].南京理工大学学报,2007,31(4):487-490 Han Yuge,Liu Ronghui,Xuan Yimin.Infrared image simulation of complex terrain background [J].Journal of Nanjing University of Science and Technology,2007,31(4):487-490(in Chinese)

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