Compensation method based on EKF for solving radome error slope

A compensation method based on control technique was proposed to solve the radome boresight error slope, which provided the probability of reducing the time constant of the guidance controller to be designed and upgraded the missile's maneuverability. Firstly, the key problem that the radome slope seriously affected the stability of missile's guidance and control system was analyzed, and the essence of the way how it acts was pointed out; secondly, the compensation method was deduced through the analyzing of the coupling relationship among the output of the seeker, radome slope and missile's attitude, according to the missile's expectation for the information of LOS rate; Finally, the extended kalman filter was used to estimate the slope, and combining with the compensation method brought out forward, plenteous mathematical simulations were conducted. The simulation results demonstrate that the method recommended obviously improves the stability and accuracy of the missile.