Research On Virtual Prototyping Technology Of Laser Fuze

The laser fuze emits laser actively to illuminate the target and receives the target echo signal, then it can give the target existing signal by the analysis and processing of the echo signal, and finally realize the precise initiation control of missile warhead. Therefore, the research of the near field scattering characteristics of the target is of great significance. Based on the measured data of targets’ surface materials, this paper studies the target modeling technique for the calculation of laser fuze’s target scattering characteristics、optimization and statistical modeling of BRDF (Bidirectional Reflectance Distribution Function)、simulation technology of typical targets’ laser echo characteristic、target echoes’ signal analysis and processing technology. Paper’s main work is as follows:The paper studies the 3D target modeling technique for the calculation of laser fuze’s target scattering characteristics. Based on the 3DS and XML technology, the paper establishes 3D geometry and surface material models. Target model management software is developed to load, edit and use the geometry and surface material models.Based on the study of laser scattering properties of target surface materials in near field, it completed the optimization modeling of the BRDF statistical model for multiple target surface samples. By using Genetic Simulated Annealing (GSA) hybrid algorithm, the paper completes the related parameters’ optimization processing of the BRDF model. The paper studies the application of LS-SVM in the optimization modeling of the BRDF statistical model and completes the modeling of BRDF by using LS-SVM algorithm.The paper establishes the simulation model of panoramic laser fuze detection. Based on the study on characteristics of laser echo, the paper develop the simulation software of laser fuze’s echo characteristic. By the software, it realize the simulation and calculation of the targets’ LRCS (Laser Radar Cross Section) distribution, the simulation of laser fuze’s pulse broadening characteristic, the modeling and emulation of echo characteristic in the process of rendezvous, and the scanning and imaging of laser fuze in the process of rendezvous.Based on the simulation results of the laser fuze’s echo signal, the paper studies the signal processing technology of laser fuze, and design a target recognition algorithm for laser fuze based on dynamic threshold technology. On the CPLD hardware platform, the target recognition algorithm is simulated and verificated.