点源目标的红外搜索与跟踪系统的作用距离估算  

Operating Distance Estimate of IRST for Infrared Point Target

作　　者：李凡[1] 刘上乾[1] 张峰[1] 秦翰林[1] 

机构地区：[1]西安电子科技大学技术物理学院,陕西西安710071

出　　处：《红外技术》2008年第9期502-504,共3页Infrared Technology

摘　　要：红外目标的探测在告警、制导等领域具有重要意义。在中远距离探测中,红外搜索与跟踪系统的作用距离受到大气传输、红外探测器的性能以及目标的辐射功率等因素的影响。传统红外系统的作用距离方程具有一定的局限性。考虑到目标成像弥散斑和背景辐射的影响,对红外搜索与跟踪系统(IRST)的作用距离方程进行修正,得到IRST系统的作用距离与系统的噪声等效温差(NETD)之间的关系,推导出探测器噪声限下对点源目标的作用距离方程。为IRST系统的综合评估和设计提供了一个重要的依据。Infrared point target detection system is of great importance for missile warning and guard. The operating distance is mostly influenced by a few factors, atmospheric attenuation, the performance of infrared search and track system （IRST） and feature of target and background. The traditional operating distance equation takes on definite localization. Considering the effects of background radiation and image dispersion, under detector noise limited circumstances, a new operation distance equation is deduced. The relations between the operation distance equation and NETD are established.

关 键 词：红外搜索与跟踪系统 红外点目标 噪声等效温差 作用距离 

分 类 号：TN216[电子电信—物理电子学]