Simulation And Research On Key Technology Of Anti-radiation Seeker System

As a key component of the anti-radiation missile weapon system,the anti-radiation seeker is mainly used to detect,intercept and angle the target signal of the enemy radiation sources.The technical performance of the anti-radiation seeker will directly affect the operational performance of the anti-radiation missile.Using computer simulation technology to model the anti-radiation seeker system and build the complete simulation system can quickly and effectively study the anti-radiation seeker system performance,evaluate the operational performance of anti-radiation missiles,and provide theoretical reference for the operational strategy of anti-radiation missile in the new era.In this thesis,based on the operational principle of anti-radiation missiles and the working flow of anti-radiation seeker,the overall plan and framework composition of anti-radiation seeker simulation system are studied and designed,and mathematical model of all the system's sub-modules is built according to the functional requirements of the system.The system's sub-modules include control module,environment module,antenna module,receiver module,signal processing module,data processing module,proportional guidance module,etc.At the same time,the key technologies used in the central sub-modules in the system simulation are particularly demonstrated and analyzed.Firstly,the antenna pattern of two two-dimensional planar arrays in the antenna module is simulated,and the pattern characteristics of different antenna arrays are analyzed.Several common angle tracking techniques in data processing modules are compared and analyzed,and the advantages and disadvantages of different angle tracking methods are verified by simulation experiments.The proportional guidance law and guidance equations in the proportional guidance module are theoretically deduced and verified by simulation,and the influence of the proportional guidance coefficient on the missile trajectory is demonstrated.The missile trajectory characteristics and missile countermeasures are discussed and analyzed when there are incoherent point-sources interference in the tracking direction.According to the theoretical analysis and simulation verification of several key technologies,selecting the appropriate parameters to establish the mathematical model of the system sub-module can promote the coordination between the module and the module.Finally,on this basis,a complete anti-radiation seeker simulation system based on the Visual Studio 2010 platform is built to simulate the signal level simulation of the whole system of anti-radiation seeker,which is from receiver to back-end signal processor,from searching to tracking,from airspace detection to local anti-interference.