Infrared Image Formation For Multiple Targets

Advanced missile defense technology occupies an important place in modernwar. To simulate diversified battle scenes at a relatively low cost, and satisfy theactual demand of infrared offensive and defensive weapons testing becomes aresearch hotspot. As an effective mean in the process of weapon development andperformance test, visual simulation technology simulates military equipment andbattlefield environment well, and makes people get real and free visual experience.Most of the current research focus purely on the visual simulation programdevelopment or construction of the hardware-in-the-loop simulation system, anddoesn’t form a complete infrared weapon performance test system. The simulationobject is mostly a particular battlefield target which is different from the morecomplicated real battlefield environment. The application of visual simulation withcoexisting and interactional targets into the infrared offensive and defensiveweapons makes the simulation results more reliable, and provide solutions forinfrared weapons development and performance evaluation, this is very important inreal applications.With the scene of aircraft launching IR decoy during the flight in the sky forprototype, combining virtual reality technology, aerodynamic and infrared radiationtheory, we build models and study the combat process by simulation, and finallybuild up a universal infrared visual simulation system applicable to complexbattlefield environment.First, the motion law of the IR decoy and the infrared radiation characteristicsof the whole scene are studied: we carry on modeling analysis of the flow field nearthe IR decoy with finite element method based on the theory of aerodynamics; fullyconsidering the impact of various influencing factors on infrared radiationcharacteristic, we analyze infrared radiation characteristic of the scenario andmoving targets based on Planck’s law theory, and finish the preparation work ofinfrared visual simulation.Second, design the software solutions of multi-objective infrared simulationsystem. We build3D models and conduct visual simulation with the help of Creatorand Vega Prime development environment, design system software whichresponsible for receiving images, calculating parameters in real-time and drivingPXI devices, and accomplish functions of real-time simulation of aircraft infrareddefending scene, real-time image data transmission and the control of analog array.Then, build up system hardware platform with PXI bus at the core. Datatransmission system among image generation computer, industrial control computer and array driver is established. We take the key point design with array driver, finishthe conversion from digital image data into analog voltage signal, then light up theinfrared analog array and Form the real IR radiation source.Finally, we accomplish test work and connection of each function module ofthe simulation system, build up complete infrared visual simulation system, andevaluate the indicators of the system through observation and analysis of theexperiment result.