Study On The Technique Of Spaceborne Radar Jamming And Simulation

The development of the missile defense system brings serious threats to ballistic missile. It becomes an international problem that improving the successful probability of ballistic missile. Because the most radars of the missile defense system are disposed in the country of enemy, traditional jammer could not adapt well to jam them. This paper's springboard is protecting ballistic missile by using spaceborne jammer. The mathematic model is established. The effect of orbit is studied. The jamming model is presented and the jamming effect is analyzed. The model of spaceborne jammer is established. Nest is the paper's primary work:Firstly, present the background and significance of the research. The present situation of satellite orbit, jam technology, simulation technology of jamming is analyzed. This paper's structure and primary innovation is explained. Secondly, discusses the index of spaceborne jammer's capacity. The sportful model of spaceborne jammer, the eyeable model and power model between spaceborne jammer and target are established. Firstly, the mechanical model of spaceborne jammer's orbit is analyzed. The six element of orbit is gained. The classification method of spaceborne jammer's orbit and each orbit's purpose is introduced. The coordinate system definition and the conversion formula are gained. Secondly, the jamming capacity of spaceborne jammer in typical orbit is simulated, and the characteristic of spaceborne jammer is discussed.Thirdly, studies on jamming model used in spaceborne jammer. At first, smart noise jamming, interrupted-sampling repeater jamming and interrupted-sampling repeater jamming based on convolution are researched. Because of those jamming signal having dependency with radar signal, they can go into radar receiver and acquire radar's compressing gain. This model reduces the request of jamming power. Then, the calculation model of detection probability in noise jamming is established. This model can't limit in the hypothesis that noise's distribution is Rayleigh distribution, and can be used in calculating radar detection probability under new jamming model such as smart noise jamming.Finaly, studies on modelling method of spaceborne jammer simulation system. For realization simply and saving cost, the spaceborne jammer separates into two parts, including producing jamming signal, spaceborne jammer moving and managing jamming resource. Firstly, the situation of spaceborne jammer simulation system in spaceborne jamming simulation system is analyzed. The function, processing flow and interactive interface are analyzed. The simulation result is gained. Secondly, the jamming signal generation module's constitution, realization structure, processing flow and input-output are studied. Pivotal model is expatiated and simulation result is achieved.The research of this paper is creationary for spaceborne jammer, and has some instructional effect for research of spaceborne jammer.