目标飞行高度和速度对红外探测的影响  

Influence of Target Flying Altitude and Velocity to Infrared Detection

作　　者：易亚星[1,2] 姚梅[1] 吴军辉[1] 乐开端[3] 

机构地区：[1]中国人民解放军63880部队 [2]第二炮兵工程大学 [3]西安交通大学机械制造系统国家重点实验室

出　　处：《电光与控制》2013年第11期7-10,20,共5页Electronics Optics & Control

基　　金：总装重大课题资助(2010SY331040)

摘　　要：首先定义了一个描述目标被探测的难易程度（隐蔽度）的物理量——可测度。分析了目标飞行高度和速度变化对目标红外波段可测度的影响,在大量计算的基础上分析了上述影响和变化的规律性。分析结果表明，目标飞行马赫数每提高0.5，探测距离就能增加大约5 km；目标在8 km以下时，其可测度随高度增加而增大；在8～10 km高度时目标的可测度值达到最大；高度超过10 km后，其可测度随高度增加而减小。Firstlythe definition of detectability was presentedwhich is a new physical quantifier used to describe the difficulty level for detecting a target.Analysis was given to the influence of target flight altitude and velocity on its detectability in infrared bandand the regularity of detectability changing was obtained based on a mount of simulating calculations.The analysis result shows that：1） Under normal weather conditionthe active detecting range will increase by 5 km for the same infrared detector when the speed of target improves by 0.5 Mach;2） The detectability of a target will increase with the increasing of its flying height when the height is under 8 kilometersdecrease with the height when it is beyond 10 kmand reach the max at the height of 8 to 10 km.

关 键 词：红外告警 目标探测 可测度 红外目标 

分 类 号：V271[航空宇航科学与技术—飞行器设计] TN215[电子电信—物理电子学]