| The advantages of the laser are diversity, such as its better ability to resist electromagnetic interference, monochromatic and coherence, replacing radio to accomplish the projectile detonation point control accurately. Therefore it is widely used in various types of tactical missile and conventional ammunition. However, laser photoelectric detection system is easily affected by the environmental factors (clouds, mist, rain and snow et.al), which can scatter and decay the effects of the laser signal and weaken the system performance, which can make the system failure sometimes. For example, when a pulsed laser through large diameter raindrop, going with serious backscatter randomly, incident light return to the detection system receiving field of view along the path of the signal transmission light. It will make a mistake that the target echo signal when the signal reaches certain strength and meets certain conditions. So it is worth studying in extending application scope of photoelectric detection system.Through the study of physical characteristics of the raindrop and scattering characteristics of laser to established model of laser transmission in rainfall environment.This research aims to study the characteristics of output signal that Raindrops affect to photoelectric detection system, analysis the differences between the raindrop signal and the target signal which affect to detection system at the same time and the target characteristics under rainfall environment, establish a target recognition algorithm, provide the design of the complex environmental targets photoelectric detection information-the double light path detection target recognition method.According to the double optical detection method to build the photoelectric detection system, and use the actual system to complete the relevant test.Through experimental simulation and analysis, the double light path detection target recognition method that can reduce the interference by environmental factors. |
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