Study On Inter-hierarchy Modeling Approach In Weapon-Platform Level System-of-systems Combat Simulation For Operational Effectiveness Evaluation

The evaluation of operational effectiveness is the main problem in weapon systems analysis and demonstration. The traditional analytical and expert-based method of evaluation can hardlytackle the complexities of modern information era system-of-systems. Researchers have proposed a system-of-systems combat simulation based evaluation approach to solve this problem. The versatile research goals and perspective of different functional area (for example the institute of military systems analysis and the general design department of the industry) propose different hierarchy of requirements for systems of systems combat simulation.But when system-of-systems combat simulation technology is used to solve the evaluation problem, it sees the multitude of entities, the complexies of interrelationships, the versatility of combat mode, and variability of struture, and finds that to solve the problem at a single resolution with a single simulation system is impossible. There are two basic approaches to tackle this problem: the first is "Divide and conquer", and the second is "Aggregate and conquer". "Divide and conquer" means to solve the problem hierachically. To put it in more accurate words, the system-of-systems combat simulation systems will be divided to multiple hierarchies; "Aggregate and conquer" means to solve the problems with aggregation and order reducing, in another words, with meta-modeling method. With simulation meta modeling, the complex high order simulations models are reduce to a more simple lower order analytical model, also can reduce the complexities of system-systems.To the "divide and conquer" approach, the main problem is how to establish the framework constraint from the higher-level simulation systems to the lower-level simulation systems; we name it the problem of "how the higher-level direct the lower-level". To the "Aggregate and conquer" approach, the main problem is how to aggregate the simulation meta-models of the lower-level simulation systems to the higher-level, we name it the problem of "how the lower-level support the higher-level".The contents of this dissertation are foused on the two problem categories, which include:(1) After analyzing the problems facing the system-of-systems combat simulation, including the multi-perspective problem, the multi-resolution problem and the uncertainty problem, the author proposes the meta-model based inter-hierarchy simulation modeling methodology and corresponding reference model.(2) The key to solve the problem of "high level direct the lower level" lies in establishing the framework constaint for the lower level simulation systems according to the model structure of higher-level simulation systems. The model structure is divided to two categories: the static structure and the dynamic structure. The static structure is based on the system entity structure (SES) and the prune entity structure (PES). The dynamic structure is based on the model frame and experimental frame. This paper proposes the static and dynamic structure construction method to construct the entity structure and the model frame. Then relevant staticdeconstruction and dynamic deconstruction method are studied to establish the entity structure constraint and the experimental frame contraint for the lower level simulation systems.(3) To solve the problem of "lower level support the higher level", the author proposes the generation and application method for simulation meta-models. The concept of Meta-model Semantic Structure (MSS) is proposed as the basis for aggregation to the higher-level simulation systems. The composition and embedding method for simulation meta-model are studied.(4) Based on the inter-hierarchy modeling method, a new system-of-systems combat simulation based weapon system effectiveness evaluation method SCA is proposed.(5) A corresponding weapons and equipment system-of-systems combat simulation evaluation environment is designed, the theory of this dissertation is demonstrated by an example of naval anti-ship weapon systems inter-hierarchy simulation.The main contr...