Active And Passive Optical Joint Detection Algorithm Research

With the new material and new technology applying in military, the detectability of military target is lowing, and the mobility is increasing. The information coming from one detector by a single detecting means has can not satisfy the need. With the improving of new detecting technology and new detecting means, also with the improving data fusion, multi-detection has being the main one detecting means. It has been widely used in military and civil. Joint detection can cover the shortage of one single detector and gets high detection probability. In this paper, we aim to apply joint detection in optical band. Using active/passive detection means and different optical band, the detecting precision can be improved. First, analyze the characteristics of the targets and background of joint detection system. Here the ORCS and the infrared radiation characteristic of plane is priority research area. From the result of analysis we can see that the passive detecting band 8～12μm optical band is better than 3～5μm optical band.the frame of this optical joint detection system be designed. we make the further studies on the key technology and main influences of every subsystem. Analyzing characteristics of signal and main noise of this system and also studying on the signal processing in this system.We pay more attention to the detection algorithm of optical joint detection system. According to this joint detection system, we applied two algorithms in this system. From the analysis we can see that there is shortage in both two algorithms because of the detection probability is seriously influenced by the change of day and night. In order to reduce the false alarm probability, we adjust the fusion process and bring forward a new algorithm to this system. Finally, from the result of emulate, we can get higher detection probability than only one single detector.