摘要
提出了一种新的红外警戒系统的探测概率计算方法。针对给定参数的光学系统,建立了计算过程的数学模型,模型显示未知目标在不同运动状态下的瞬时探测概率密度与警戒系统的转速、目标运动速度及距离成正比关系。以人眼为接收器,分析了大气透过率、目标与背景对比度以及杂波对瞬时探测概率的影响。给定目标的一般参数如亮度、飞行速度范围及与背景温差,给定系统的虚警率,仿真实验结果表明:与传统的计算方法相比,该新方法在物理探测概率方面能较好地反应警戒设备的性能,并且能反应目标距离、搜索时间、观察次数的影响。
A new calculating method of detection probability for IR warning system was proposed. The mathematical model of calculating process was set up corresponding to the optical system with given parameter. The model showed that the instant detection probability density of unknown target on the different motion condition had direct ratio relation with the rotational speed of IR warning system, kinematic velocity of target and distance between target and system respectively. Taking human eyes as the acceptor, the influence of atmospheric transmission, contrast and background clutter on instant detection probability was analyzed. Suppose that the main parameters such as target luminance, aviation rate, background temperature difference are known, the emulation is implied. The result shows that this new method has better performance to warning equipment compared with previous methods, and reflected target distance, searching time and observation frequency.
出处
《红外与激光工程》
EI
CSCD
北大核心
2011年第10期1856-1861,共6页
Infrared and Laser Engineering
基金
国家863计划
关键词
探测概率
红外警戒
对比度
目标距离
大气透过率
detection probability
IR warning
contrast
target distance
atmospheric transmission
