Design And Implementation Of Missile Trajectory Modeling And Simulation System

Simulating,by using the computer mathematical model to some or even completely replace the physical model system,can greatly improve work efficiency, shorten the development cycle and save funds.After years of development,the computer modeling and simulation technology formed a lot of theory and method, widely used in missile weapon system design,demonstration,test,identification and combat training and drills at home and abroad,are the most important technology in the missile weapon system development,develop the huge economic efficiency.Missiles have six-degree of freedom in space sports,missile trajectory modeling and simulation invovle many factors,with the complex constraint relationship,huge simulation system and complex structure,the establishment of a complete missile trajectory simulation model is very difficult,so the research unit more uses a visualization of the nonlinear dynamic system modeling tools like MATLAB/Simulink, the modeling method has higher efficiency and can be more easy to achieve some visual effect,but needs to rely on MATLAB software,such trajectory simulation model often lacks flexibility,the model reusing isn't high enough,cannot satisfy some missile trajectory simulation application requirements.Using conventional engineering calculation language,such as FORTRAN,VC,C programming realize missile flight dynamics modeling and simulation,to support the complex trajectory simulation application requirements,has become one of the modeling and simulation ballistic development trend.At the same time,current missile system simulation ofen requires network and system integration for the mathematical and semi-physical simulation system in the different geographical position,to implement large-scale distributed simulation for supporting the interoperability in different simulation systems and the reusing of simulation component.In recent years,missile trajectory simulation system based on the DIS,HLA,TENA,etc,is also become development trend.The missile six degree-of-freedom trajectory model is realized based on VC in the paper,constructed missile trajectory distributed interactive simulation system based on HLA,attempt missile trajectory modeling based on conventional engineering calculation language actively,and provided the operation environment with high reusability and extensibility for the missile trajectory models test and verify.The missile trajectory modeling using the conventional engineering calculation language, make the missile system simulation more flexible and easier to underlying program development and real-time control,its linguistic features are more close to the logical expression of the mathematical model,and moreover,improve the reusability of simulation model and scalability of simulation system.Due to HLA can effectively support the interoperability in different simulation systems and the reusing of simulation component,it is gradually becoming basicl architecture of distributed simulation system.Researching the missile trajectory simulation system constructing method based on HLA,can lay technology foundation for different simulation system network and integration.The paper firstly studies the basic theory of missile ballistic modeling,simply describes the system,model and simulation etc the basic concept and the basic method of trajectory simulation,studies ground,missile body,ballistic and speed coordinate systems often used in missile trajectory research,and mutual transformation,missile flight mechanical environment and missile movement modeling basic.Secondly,in accordance with the purpose of simulation and simulation modeling requirements, missile trajectory simulation model will be divided into body exercise module,head shells and numerical calculation algorithm module module.Based on each mathematical model and the simulation modeling,we build more complete missile trajectory simulation models can support the actual operation of the simulation system. It studies models built methods of the missile trajectory mathematical model and simulation model based on VC,builds missile motion equations including missile mass motion and rotation dynamics equation,missile around the centroid motion and rotation equation,quality equation,angle geometric relations equation and missile control equation etc,for easy to simulation realization,simplifies and decomposes these equations,and discusses mass movement equations when we think of the missile as a point,introduces the concept of trajectory simulation model,studies Runge-Kutta application in the trajectory calculation and interpolation algorithm,and built methods of missile body motion model,missile-target solution model and numerical algorithm models based on VC7.0,establishes a complete missile trajectory simulation model can supports simulation system actual operation.Then,with anti-ship missile attacking surface ship for application background,it researches and implements the missile trajectory distributed interactive simulation system based on HLA,on the basis of distributed interactive simulation technology and its application system development method,and according to HLA simulation federation construction process and method,designs and realizes missile trajectory distributed interactive simulation system,and tells the system running process and software operation method,lists running results.Finally,the paper talks over two key technical problems,include to establish differential equations numeric solution models and to vertify missile ballistic simulation model.After many simulation rtmning validation,the system is always stable,surface warship and anti-ship missile federate software normally run,ship motion modeland missile trajectory model solve correctly,can efficiently,correctly solve all trajectory parameters in the whole missle flying,and can hit ships successfully.So,it shows that the missile trajectory model in this paper can lifelikely,perfectly simulate missile flight trajectory,have stronger practicability.The missile trajectory simulation model based on VC7.0 has high efficiency,can satisfiy the real-time even super real-time simulation application requirements.The system designs reasonablely,runs normally,and has strong scalability,practicability and application value.The results of the work of this thesis is mainly reflected in the following areas:(1) by combining mature missile trajectory theory with simulation modeling methods,establishment complete missile six degree-of-freedom all trajectory mathematical model.(2) simplifies the motion equations of missile,establishes missile six degree-of-freedom all trajectory simulation model based on VC7.0 can run efficiently on general computer.(3) establishs ordinary differential equations numerical solution model and interpolation algorithm model,and programming based on VC7.0.(4) constructs missile trajectory distributed interactive simulation system with expansibility and reusability based on HLA,provides operation environment for missile trajectory model experiment.(5) the technique was proposed missile trajectory model validation methods based on dynamic V&V.