Attack Uav Millimeter Wave Active Radar Guidance Technology Research

Precision guided weapons play a crucial part in modern wars. UAV has been payed more and more attention to for its distinctive advantages in many countries. For the terminal guidance of attacking UAV, the dissertation investigates the millimeter-wave initiative radar guidance system .The main contents of the dissertation are as follows:1. Considering the flight environments and characteristics of the attacking UAV, six degrees of freedom, nonlinear model of UAV is built. It lays a foundation for the simulation of terminal guidance system.2. The mathematical model of the millimeter-wave initiative radar seeker is constructed. Basing on analyzing the working mechanism of the millimeter-wave initiative radar seeker and considering tracking the target steadily and accurately, the servo system of the millimeter-wave initiative radar seeker is constructed. It contains the loop of stabilization and the loop of track. Simulation results show that the model is good enough to satisfy the requirements of stabilization, tracking precision and the ability of restraining interference.3. The terminal guidance law is designed. Aiming at the terminal guidance of the UAV, the dissertation designs a kind of optimal guidance law which bases on optimal control theory and flight dynamics. The optimal guidance makes uses of the information of relative distance , velocity and acceleration between UAV and target. The estimation theory for the acceleration of target is studied too.4. The terminal guidance law is analyzed through digital simulation. The precision of the millimeter-wave initiative radar guidance system is evaluated using Monte Carlo method through digital simulation.