The false alarm rate of Ultraviolet (UV) warning is low

but it’s detecting distance is low too. On the other round the Infrared (IR) warning’s performance is opposite. Therefore we put forward a new kind of UV and IR composite alarm warning system. We analyzed the detecting mechanism

capture condition and effecting distance of the UV Warning System. Hereby

we put forward a mode which can estimate calculate the detecting distance of UV Warning System based on Lowtran. At the same time

we calculated the UV Warning System’s detecting distance to solid fuel missile. We analyzed the factor which can effect the detecting distance

and put forward a new way of matching the diagnostic image which can improve the detecting distance and based on Gabor. Of course we did some experiments to validate our theory and detecting mode. From these experiments we can clearly know that the detecting distance veracity can be controlled below 5%

and the warning distance can be improved from before 5km to now 8km. Using our detecting mode the complex warning system’s detecting efficiency and important ground equipments’ warning viability can be enormously improved. This mode can be used in other optics detection equipments.