Design And Implement The Method Of The Simulation Of Angular Glint In The RFSS

The performance-test of radar seeker is often carried on with the RFSS (Radiation Frequency Simulation System). To meet the need of keeping the fidelity of simulation as accurately as possible, it is demanded that the system has the ability of simulating angular glint, which is caused by the complex electrically large moving target.On the basis of the concepts proposed before about angular glint, the methods of angular glint simulation are researched and discussed roundly, and new methods are proposed, then theoretic results are computed and simulations are made. Firstly, according to the characteristic of the RFSS and the aim of simulation, the angular glint statistical model suitable for the RFSS is selected, which is the most practical and comprehensive than others. Secondly on the foundation of the time and frequency characteristic of the angular glint, the methods of generating the signal which accord with the angular glint statistical models are developed respectively. Then put forward the methods to assure that new produced signal possess the wanted time and frequency characteristic. Finally the scheme about how to implement these methods in the RFSS is put forward corresponding to the trait of the RFSS.The algorithms of generating the four angular glint statistical models are realized in personal computer using MATLAB, then statistical models added frequency characteristic are programmed. The statistical result and spectrum can demonstrate that these methods are correct fully.All these models are selected pertinently, so much attention is paid to the difficulty of realization in the RFSS. Hence, these methods not only have definite theory value but also strong practically.