Study On Photoelectric Detection Technique And Information Identification Technique For Countermeasuring Tunable Laser Guidance Weapon

Tunable laser guidance weapon, a new laser guidance weapon having higher anti-jamming, will be likely to appear in the future, with the development of tunable laser technique. Therefore, it is important that developing the research on photoelectric disturbance technique for tunable laser guidance weapon. Depending on the demand of beguiling photoelectric disturbance technique, the photoelectric detection technique and information identification technique for countermeasuring tunable laser guidance weapon was studied on in this dissertation. Depending on the demands of photoelectric detection and information identification, the characteristics of laser guidance signal in the atmosphere were analyzed firstly. When studying photoelectric detection technique, in order to satisfy the needs for wavelength identification and pulse coding identification, a design project of photoelectric detection system which adopts single cell detector and multicell detector simultaneously was put forward. The detective validity in two different detective modes was testified by calculation. When studying laser wavelength identification technique, depending on a concrete optical configure, a new wavelength measurement technique using grating spectrometer and CCD imaging system was studied on by theoretic analysis and principle experiment. The study result shows that this new technique is prone to be realized and has high practical value compared with current wavelength measurement technique. When studying laser guidance signal pulse coding identification technique, depending on the characteristic of the signal, a new pulse coding identification technique based on signal time correlation was put forward. Using this new technique, laser guidance signal pulse coding identification can be realized under the condition of few signal data with low-grade disturbing pulse and leakage pulse.