Space Vehicle Intelligent Autonomous Control

With the progress of aerospace technology, battle field as well as military activities and state security has been extended into space rapidly, as a result the form of modern war is changing. It has stretched the modern hi-tech local war into multidimensional space which includes the land, sea, air, outer space and electron. The entering, using and controlling of space have become the main aim of national security and developing strategy of the major military countries. In the future, the war will probably start by military spacecraft in space, so space combat will become an important attack mode.This paper based on NSFC (National Natural Science Foundation of China) — "The intelligent and autonomous optimization mechanism of aerospace plane based on graphical models" .The fund majors in graphical models construction of autonomous optimization mechanism in order to solve nonlinear and large-scale complex optimization problems asking for fast adaptation ,real-time ability and high intelligent. The new optimization mechanism will be used in autonomous control of spacecraft. This paper focuses on the anti-satellite policy research of intelligent and autonomous spacecraft. Firstly, we introduce the movement theory and methods of celestial body, then give kinematical model of spacecraft represented by unit quaternion for theory research and simulation process in detail. Secondly, the whole anti-satellite process is segmented into three necessary phases including ground guide, automatic seeking and approaching attack. We give minimal energy orbit transfer method using optimal control theory in the first phase;in the second analyze the multi-impulse and proportional guidance schemes;considering the complexity of trajectory planning in the last phase, present a tool called rapidly-exploring random tree and make it suitable for solving trajectory planning problem in dynamic environment by using the concept of state-time space.In last section, the models of key techniques in three phases of anti-satellite process are simulated by computer, and the results of simulation indicate that the proposed method is effective and feasible.