Feasibility analysis of laser detection and positioning for unmanned aerial vehicles

摘要： In order to carry out effective anti-reconnaissance for unmanned aerial vehicles（UAV）, the feasibility of effective monitoring of UAV by laser detection system has been analyzed. The models of laser transmitting and receiving system and the photoelectric imaging system on UAV are established. The characteristics of specular scattering and focal plane reflection of UAV imaging lens are simulated. Taking the UAV located at a height of 10,000 m as an example, the feasibility of the application of two detection systems under reflected light has been analyzed. The range of incident angle of the detection laser, the distribution characteristics of light intensity on the photosensitive surface of the detection system and the variation characteristics of return light of the detection laser during dynamic scanning have been obtained respectively. The results show that the focal plane reflected light intensity of the UAV imaging lens is much higher than that of the specular scattered light intensity, and has a good return characteristic. Within the field coverage of the UAV imaging system, the focus plane reflected light can be used to effectively detect and locate the UAV target.