Research on Detection Performance in Laser Ranging System

摘要

To the laser ranging system which has the issues of low detection sensitivity and poor ranging accuracy in the field surroundings,the photoelectric detection technology based on avalanche photodiode APD was proposed to research the photoelectric detection performance.According to the working principle of laser ranging,optical emission institutions and detection institutions of the laser ranging system were analyzed,and the working performance of APD was analyzed;combining the practical request of ranging,the geometric optical paths of ranging system was designed and analyzed;in terms of the atmospheric attenuation and emitting laser power and other aspects,the field surroundings of optical detection performance was researched.By the calculation and analysis,under the specific known conditions,the relationship between the emitting laser wavelengths and atmospheric attenuation,relationship between the detection distances of detection system and receiving laser power of detector were given.