Research On Damage Assessment Of Aircraft Carrier And Its Battle Group

In the future of “Air-Sea Battle”,aircraft carrier and its battle group formation are the main combat units,are the focused targets in battlefield.Therefore,it is very necessary to timely and accurately evaluate the damage to aircraft carrier battle group after suffering attack and analyze the changes of the combat effectiveness,and it is also essential for commanders to control the battlefield situation and formulate combat schemes.In view of this problem,this thesismainly studies the damage evaluation of aircraft carrier battle group.The main work of this thesis is as follows:Firstly,the damage assessment system of aircraft carrier battle group is constructed.The system composition,vulnerable parts and basic compilation of aircraft carrier battle group are analyzed;critical issues in the damage evaluation of aircraft carrier battle group are clarified,including the determination of evaluation indicators,acquisition of damage data as well as basic evaluating principles;the relationship between the damage evaluation system of aircraft carrier battle group and the air-sea joint combat system is introduced;then,the overall scheme of the damage evaluation is designed according to the structure of the damage evaluation system of aircraft carrier battle group.Secondly,the systematic damage assessment of aircraft carrier is studied.The approaches of analytical hierarchy process and fuzzy comprehensive evaluation are combined to conduct the systematic damage evaluation of aircraft carrier based on the obvious hierarchical characteristics of the system components of aircraft carrier,and the problem of the consistency check of the analytic hierarchy process is improved.The damage evaluation verification of aircraft carrier fire-control radar system and air defense weapon system is carried out in simulation example,and the results show that the algorithm is efficient and effective,and it can make damage evaluation on multi-level system.Thirdly,the damage assessment of the support system of carrier-borne aircraft is studied.Its structure and the vulnerability of the facilities under the impact of shrapnel are analyzed based on the important role of the support system of carrier-borne aircraft in carrier combat,and the damage evaluation model based on fuzzy analytic hierarchy process is established;the weight of the sub-facilities and of main facilities are determined by using reciprocal judgment matrix and triangular fuzzy number complementary judgment matrix,and the damage value of the support system of carrier-borne aircraft is obtained.The simulation results show that fuzzy analytic hierarchy process can effectively evaluate the damage degree of the support system of carrier-borne aircraft under the attack of shrapnel.Fourth,the damage assessment of aircraft carrier catapult is studied.On the basis of the damage evaluation of the support system of carrier-borne aircraft,the vulnerability analysis on aircraft carrier catapult is conducted,and the geometric model of catapult is established.According to the warhead power of ballistic missile and the distribution model of shrapnel,the physical bombing damage of the catapult is analyzed,and the damage effect of shrapnel to catapult is simulated based on the Monte Carlo method.The simulation results show that the combat effectiveness of carrier-borne aircraft will be greatly weakened after the catapult and its deck area suffer penetration and semi-penetration,and the result is intuitive and reasonable.Finally,the damage assessment of aircraft carrier battle group formation is studied.As the problem of striking naval ship priority should be considered in the combat of aircraft carrier battlegroup formation,an improved gray correlation model is put forward by the approach of classicalgreyrelationalanalysis,so as to solve the drawbacks of multi-objective and multi-attribute problems,and the damage of the aircraft carrier battle group formation is evaluated and sorted.The subjective and objective weights of the damage evaluation indicators are determined respectively by entropy-weight method and analytic hierarchy process,and they are combined as the combination weight;to make full use of the information carried by the index attributes,a polygon area formed by the adjacent points of the reference sequence curve and alternative sequence curve is used as grey relational coefficient,by combining with the combined weight and the grey relational coefficients,an improved grey relational degree is thus determined.The simulation results show that the improved algorithm is more reasonable than the classical method.