红外搜索跟踪系统作用距离分析与计算  

Analysis and Calculation for Operating Range of IRST System

作　　者：严世华[1] 祝世杰 

机构地区：[1]军械工程学院,河北石家庄050003 [2]第二炮兵某军事代表室,湖北宜昌444200

出　　处：《光电技术应用》2011年第2期39-41,共3页Electro-Optic Technology Application

基　　金：国家专项技术创新计划

摘　　要：针对环境对红外搜索跟踪系统作用距离的影响,分析了传统作用距离方程中与环境有关的参数,进而改变了作用距离的表达形式。在新的作用距离表达式中,等效噪声功率充分反映了包括环境噪声因素在内的各类噪声的大小,通过分析探测器数字图像中噪声统计特性,并依据探测器灰度灵敏度估算了等效噪声功率,从而达到在不同的实际应用环境中估算红外系统作用距离的目的。通过试验分析得出结论,相对传统作用距离方程,改进的作用距离方程计算结果更接近实际作用距离。For the influence of environment effects on infrared search and track（IRST） system,the traditional operating range equation is changed in expression after analyses the parameters which relate to the environment.In the new operating range equation,the noise equivalent power（NEP） measures all noise power including environment noise.Based on the statistic characteristics of the signal and noise in digital image,the NEP can be calculated by the detectors’ sensitivity.As a result,the operating rang of infrared system can be calculated in different applications.By analyzing the experiment,the conclusion is that comparing with traditional operating range equation,the results of improved operating range equation are more closer to the actual operating range.

关 键 词：作用距离 红外搜索跟踪系统 噪声功率 信噪比 

分 类 号：TN216[电子电信—物理电子学]