Research On Cooperative Anti-Submarine Training Technology For Naval Ship CGF

For the purpose of enhancing the fidelity, interaction and expansibility of Submarine Synthetic Training and Simulation System, several technologies and algorithms, including system architecture, dynamic model, behavioral representative models and physiological models, are studied in this dissertation for the Naval Ship Computer Generated Forces (NS CGF) to improve the capability of human behavioral representation during training with submarine staffs. A new system architecture is adapted to fit not only the need of current CGF system, but the transfering ability to the future system. This new architecture expanded the utility of NS CGF and provided a basic technical station for the advanced CGF with more fidelity, complexity and reality.The approach presented in this dissertation is collecting and analyzing the researching results in the fields of computer simulation, Computer Generated Forces, Human Behavioral Representation, Game Theory and Physiology, then on the basis of these theories our theory analysis and improvement according to our researching goal are proposed. A framework is provided for NS CGF and realized as a part of Submarine Training & Simulation System.To pursue the goal, the basic concepts, current achievements and developing orientation of CGF are presented and analyzed, along with the deficiency of current CGF applications, then a new NS CGF framework which is capable of simulating the anti-submarine combating process of single ship, ship fleet and helicopters is brought forward. The framework integrates different models of physiology, cognitive, emotion and performance moderator function. To satisfy the interoperation and expansibility of the NS CGF, the NS CGF framework is compatible with High Level Architecture (HLA). The Object Class Table and Interaction Class Table are built up for the NS CGF based on HLA Object Model Template (OMT), and then the executing processes of NS CGF is given as a federate in STSS federation. The dynamic and kinetic models are simplified to aunified form to meet the necessary of real-time and 3D movement simulation of NS CGF. After that, the scene for NS CGF is constituted in Microsoft Direct 3D Retain Mode. Synergetic theory is introduced to deal with the cooperation problem of naval ships simulated by NS CGF. A generalized synergetic net algorithm is presented and used in the NS CGF's combating status identification field.Enhancing the fidelity and intelligent performance ability is a core and important topic when NS CGF is concerned. In order to describe the multi stage, hierarchy and multi-player of NS CGF anti-submarine processes, a hierarchy framework is provided based on extended Markov Chain. The hierarchy framework is composed of three sub-layers which include Task Programming Layer (TPL), Tactic Behavior Layer (TBL) and Emergent Action Layer (EAL). In TPL, the training project is divided into diverse tasks which server as the top guidance of individual ship in the NS CGF. Moreover, the task can be programmed or reprogrammed in relation to the sea battlefield circumstance, individual technical, tactical capability and combating status. The TBL integrates the physiological behavior subsystem, emotion subsystem, cognitive subsystem, behavioral representative subsystem and memory unit by means of "Stimulation -Response" (SR) model. A general Performance Moderator Function (PMF) model is given and all the factors and parameters are quantitated related to the decision-making process of NS CGF. The cognitive subsystem serves as a station where the diverse emotions, stressors, memories and other factors are all integrated into a decision for action to transition to the next state in the Markov decision process (MDP). By means of MDP model decision theory, NS CGF can make a sequence of decisions to maximize its expected utility according to dynamic programming theory under current state and its actions. At last, a standard behavior program library used by Stimulation - Response model is introduced. The hierarchy framework integrates the fidelity and int...