On Pursuit-evasion Strategies Of Two Spacecrafts Integratede Orbit And Attitude In The Plane Basede On Scoring Matrix

With the development of the space technology,the importance of aerospace in the field of national defense is becoming more and more prominent,it can be expected that in the future war,the right to control space will become an important factor in the direction of the war situation.In order to ensure their own advantages in the field of space,countries have carried out research in the field of spacecraft attack-defense.As an important branch of the field of the spacecraft attack-defense,the spacecraft pursuit-evasion strategy is of great practical significance.However,the current spacecraft pursuit-evasion strategy research tends to focus only on the distance of the two spacecrafts,ignoring the attitude information of the two spacecrafts.Spacecrafts often need to approach the target spacecraft in their own specific direction when carrying out attack missions against hostile spacecrafts or clearing their own abandoned spacecrafts.Therefore,it is of great practical significance to consider the attitude of the spacecraft into the pursuit-evasion strategy.In the paper,by establishing the model of spacecraft integrated attitude and orbit with the mathematical tool of the dual quaternion,the spacecraft pursuit-evasion strategy is been raised by using the scoring matrix method,and incorporates the spacecraft location information and attitude information into the research of the spacecraft pursuit-evasion strategy.The main research content of the paper is as follows:The paper introduces the concept of the dual quaternion,and deduces the kinematics and dynamics model of the spacecraft based on the dual quaternion,which can unify the expression of the orbital motion of the spacecraft with the attitude motion.Based on the kinematics and dynamics models of spacecraft,the integrated motion kinematics and dynamics models of spacecraft in the relative motion reference system are derived,and the coupling of the models between the attitude and the position is analyzed,the relative information of the two spacecraft can be obtained by using the information of the two spacecrafts under the relative motion reference system,and the relative information is the basic of the spacecraft pursuit-evasion strategy which is provided by scoring matrix;The application of the scoring matrix method used in the field of spacecraft pursuit-evasion strategy is introduced.The scoring function contained both relative distance and relative attitude between the pursuit spacecraft and the evasion spacecraft is desgined.According to the scoring function,the scoring matrix can be obtained.The maneuvering strategy of the pursuit spacecraft and the evasion spacecraft is selected by the min-max selection criterion;Four kinds of different initial states are designed,the above-mentioned method is used for simulation in the four scenarios,and the results are compared and analyzed to verify the rationality of the method.