Design For Target Motion Simulation System Based On Galvanometer Type Laser Scanning

At present, photoelectric tracking system has become "eyes and nerve" of artillery, aircraft, missiles and ships. Its tracking precision directly determines the weaponequipment blowing precision. Therefore, the detection of photoelectric tracking systemis particularly important. But if all using the real goal to provide test signals to weapons, not only will it cost a lot of human, material and financial resources, but will also extend weapons development cycles, or, in some cases cannot be realized. Therefore, it has been widely adopted that target simulative debugging technology to test a photoelectric tracking system.In this paper, a target motion simulation system based on galvanometer type laser scanning is designed to detect a photoelectric tracking system of a ground anti-air.According to the real goals'exercise patterns and state, it can provide simulation moving object for photoelectric tracking system in the laboratory. Subject adopts targetmotion simulation technologies based on galvanometer type laser scanning, laser beamafter double galvanometer total reflection scans the goal moving track in the way ofspot in the projection screen. This spot is simulation moving targets which can be tracked by photoelectric tracking system and has visible light and infrared characteristics of real goal.First, this paper discusses the domestic and foreign developing situation of target motionsimulation technology, and then emphatically analyzes the principle of target motionsimulation technologies based on galvanometer type laser scanning, presenting a method toeliminate pincushion distortion by applying the second curve fitting algorithm, and deducingthree mapping algorithms of simulation object route trajectory such as target of uniformradius movement etc. On this basis, according to the system function and technical indexes, overall scheme is designed, including the system control, system scanning, and systemhardware circuit and software four parts. System control scheme adopts the PC and the ARMmicroprocessor consisting of master-slave control mode, PC focus on system managementwork such as man-machine interface and send control instruction etc, and the ARMmicroprocessor is responsible for handling all the control details of the executive agency;System uses the vector scanning mode to scan; To the S3C2440A ARM microprocessor asthe core, the system hardware circuit designs the control center circuit and functional unitcircuits including data storage, galvanometer control , light power control etc. Man-machineinteractive programs and route trajectory planning program are designed based on the c + +language and point by point comparison with the linear interpolation algorithm in Visual c ++ 6.0 environment, and lower level computer software based on C language is designed inADS1.2 environment, and then USB program is wrote to achieves PC and lower levelcomputer communication. Finally, the whole simulation system is installed, and is debuggedusing projection static point and target doing uniform slash movement.