红外搜索跟踪系统作用距离等效折算

Equivalent calculation of operating range of IRST

传统的红外搜索跟踪系统作用距离方程存在一定的局限性,没有考虑背景辐射的影响。为了完成红外搜索跟踪系统对天空背景下快速运动小目标,在不同气象和飞行条件下作用距离的等效折算,推导了考虑天空背景辐射的点目标红外搜索跟踪作用距离模型,根据模型对不同气象条件下某型红外搜索跟踪系统对某型靶机的作用距离进行了推算,并利用红外搜索跟踪系统对靶机的飞行试验实测数据对模型进行验证,结果表明,模型精度较高,可以用于外场试验时红外搜索跟踪系统作用距离的等效折算。最后,利用模型对某型红外搜索跟踪系统对特定气象条件、不同飞行条件下某型导弹的作用距离进行了等效折算。

As the influence of background radiation is not considered, traditional operating range equation of infrared search and track system （IRST） has a limit. In order to complete the equivalent calculation of operating range of IRST on small dynamic target rapidly in various meteorological and flight conditions, the operating range model on point target of IRST was derived in the sky background. Based on the equation, the operating range of one IRST on the target drone in all kinds of meteorological conditions was calculated. In addition, the equation was validated by the data of target drone flight test and it is proved that the equation is correct and can be used to the equivalent calculation of operating range of IRST. Finally, the operating range of IRST on one kind of missile under different flight and specifically meteorological conditions was calculated based on the equation.