Study On Hardware-in-the-loop Simulation System For Laser Angle Deception Jam

Hardware-in-the-loop simulation(HILS) system for laser angle deception jamsimulates the process of laser angle deception jam in close to real environment usingmath model of missile, physical model of three-axes bench and pendulum mirror,seeker and laser. Currently, because of its highly efficiency and little risk, HWILsimulation system has already become a necessary condition of development of laserjam device.On the basis of theory of system simulation, model equivalence for laser angledeception jam is analyzed according to laser signal environment, time correlation,process of jam. HWIL Simulation of the laser angle deception jam in time, space,process of jam is achieved. Major work and innovation include:1. Laser environment Simulation: Spot size and energy that seeker receive fromtarget reflection in process of bomb close to target is changing continuously,So,analyze energy and spot effects of atmospheric and target diffuse reflection in lasertransmission.Construct the atmospheric transmission model, target diffuse reflection model,laser reflection model, seeker received energy model. With conditions of equivalentof seeker received energy between indoor and outdoor, simulate change of outdoorenergy in indoor environment using energy attenuator and diffuse reflection screen,which provide the laser signal environment close to the real for seeker. Construct outdoor spot model, furthermore, simulate the change of laser spotsize in indoor environment using laser spot adjuster.2. Jam process Simulation: Position and pose of bomb is changing continuouslyin process of bomb closing to target by seeker guided signal, with the Line Sightbetween bomb and target or false target. So construct bomb kinematics anddynamics model, bomb target or false target model of line sight. Based on layout ofindoor device, coordinate system is constructed. With conditions of equivalent ofline sight and pose, simulate the relative movement between bomb and target orfalse target using three-axes bench and pendulum mirror.3. Time correlation Simulation: Distance of laser signal transmission in outdooris further than indoor, besides, jam device distinguish and transmit laser signal fromindicator before it launch jam laser signal. So transmission time is differencebetween outdoor and indoor, which is simulated by time delayed device.4. Based on Reflective memory network, construct distributed real-time systemto link simulation devices which exchange information between models, controlsimulation system to run.5. Study on relationship between simulation precision and real time ofdistributed network, analyze factors affecting the seeker received energy and laserspot size precision, analyze how pendulum mirror precision effect line sightprecision between bomb and target or false target.