红外系统距离方程与作用距离分析

针对传统红外系统距离方程的局限性和不完善性,结合背景辐射强度、目标成像弥散以及成像效果等因素的影响,导出了点源和面源目标红外系统作用距离方程.为了测试所导出距离方程和估计方法的正确性,使用典型目标外场实验数据分别对其进行了测试.测试结果表明:对于点源目标和面源目标,所提出的方法估算误差明显减小;该方法得到的估算结果都较好地吻合了外场实验数据,证实了所导出作用距离方程和估算方法的有效性.

Analysis of Distance Equation and Operating Range of Infrared System

Directed at the limitation and incompleteness of the operating range equation of traditional infrared system,the operating range equations of infrared system with point and area targets are derived in terms of the background radiation intensity and target imaging dispersion as well as its imaging effect etc.Next,the experi-mental data in typical target outfield are used to test the correctness of the derived distance equations and estimate methods used.The test results show that the error estimation by the proposed scheme is significantly reduced for the point and area targets.Those estimate results coincide well with the data measured in the field,which shows that the derived operating distance equations and estimate methods are effective.