Research On The Terminal Orbit Maneuvering Of Interceptor With Imcomplete Information

Interceptor is an important element of space attack-defense. The control method of terminal intercepting orbit is the most important part of the interceptor control. The interceptor cannot get the accurate relative position and velocity when the system contains uncertainty, noise and the maneuvering of target. This paper will do some analysis for the control method of terminal intercepting orbit, which aims at the incomplete information. This paper will also design the controller when chaser meets with target or chaser stays in a position. The main contents of this paper are:(1) Based on C-W equations, this paper builds the model of relative motion between interceptor and target. Then this paper builds the state space which contains NCU, energy-bounded noise and white noise.(2) Concerning the NCU, energy-bounded noise, white noise and up-bounded thrust, this paper will build the closed-loop system and design the dynamic output-feedback controller to guarantee the poles placement, H2 norm, H∞ norm and up-bounded input.(3) This paper uses the state-observer to implement state feedback control. Concerning the NCU, energy-bounded noise and white noise, this paper designs a multi-object controller to guarantee the poles placement, H2 norm and H∞ norm. This paper separates the state-observer subsystem from the state-feedback subsystem with several sets of separated-parameters according to the separate character of transfer function.(4) Based on the sampled signal, this paper builds the sampled system. Then this paper transfers the sampled system to time-delay system and designs a robust filter under the design idea of time-delay system. What’s more, this paper will use the filter design approach to design a robust filter when interceptor stays in a position.