Research On Circumferential Multi-quadrant Detection Technology Of Small-aperture Pulsed Laser

At present,the research on the target azimuth discrimination technology of laser proximity fuze is still insufficient due to the small size of the fuze space and limited power supply.Therefore,the research on the detection technology of pulsed laser circumferential multiquadrant detection of small-caliber conventional ammunition is of great significance to improve the damage efficiency of ammunition.Pulsed laser circumferential multi-quadrant short-range target azimuth detection system uses four-quadrant pulsed laser to realize target azimuth information detection and research on key technologies in the system.The overall scheme of pulsed laser four-quadrant circumferential detection system is designed.The composition,structure and working principle of the system are analyzed.The information transmission and key technologies of the pulsed laser circumferential detection system are analyzed.The main characteristic parameters of the semiconductor laser are analyzed.The four-quadrant pulsed laser high-heavy-frequency narrow-pulse beam-expansion emission system is developed.The general form of the target echo equation of the pulsed laser circumferential detection system is analyzed.The pulsed laser large field of view receiving system is designed and the FPGA-based signal processing system is designed.The target capture rate model of the four-quadrant circumferential detection system is established.The target calculates the relationship between the target capture rate and the number of captures and the frequency of the pulse switching.The influence of random error on the accuracy of the target capture rate is analyzed.The technical analysis of the four-quadrant circumferential detection system against typical environmental interference is carried out.The static simulation experiment of the prototype machine was carried out to verify the optical and electrical characteristics of the circumferential detection system.The prototype system detection experiment was carried out to verify the distance performance of the pulsed laser four-quadrant detection system.The research results of this paper provide a design reference and theoretical basis for the laser proximity fuze azimuth detection system,which lays a foundation for further research.