Modeling And Evaluation Of Space Information Systems For Antimissile Operations

Space information system is a kind of space-based resource system which has functions such as reconnaissance and surveillance,communication relay,navigation and positioning,weather observation and missile warning.It plays an extremely important role in all fields and supports the future war form to achieve five-dimensional integration of land,sea,air,space and electricity.As a complex engineering system,the aerospace information system architecture directly determines the performance of system.In this paper,the aerospace information system to support anti-missile combat mission,centre on the combat process description,system modeling and performance evaluation and other issues to carry out research,the following research results:The internal structure of the aerospace information system is complex,and the system performance depends on the component system,the inter-system structure and the timing and work flow.This paper analyzes the composition and structure of the aerospace information system of resource operations,the functions of various satellite resources and the role in anti-missile missions,completes the description of the structure of anti-missile combat mission architecture.established the dynamic model of anti-missile warfare process based on the Petri net,and gives the conditions of information generation and sending among entities in the process of task execution,so as to obtain the logical and timing relationship between different combat activities.And provide the basis for the follow-up research.The index system is composed of different kinds of indicators of the organic whole,is the system performance evaluation process of comprehensive measurement and evaluation of the scale of the object set.Aiming at the demand of aerospace information system system modeling and evaluation task,a hierarchical index system is proposed based on the model of anti-missile combat aerial information system given above,which covers the relevant indexes involved in the operational process.The model of satellite capability in aerospace information system is constructed by using the above index system,and the capacity model of aerospace information system supporting anti-missile operation is established by using the relationship.Aiming at the complexity of the aerospace information system and the uncertainty of its anti-missile combat process,an evaluation method combining operational simulation and multi-attribute decision-making is proposed.The operational capability of the combat process simulation system is analyzed to support the anti-missile combat effectiveness The main weight model of the index is obtained by the interval number judgment matrix and the information entropy method,and then the combined weight model of the index is obtained.This paper constructs the evaluation method of the effectiveness of aerospace information system based on the combination weight model and index information.Based on the above-mentioned evaluation method,the impact of single satellite system and multiple satellite systems on combat effectiveness is analyzed by simulation simulation method.Based on the index weight model and the aggregation relation,the performance score of the system under different schemes is obtained,As well as the interaction between the satellite systems,to achieve a system performance evaluation.