Research And Implementation Of Groud To Air Defense Operation Simulation System Based On PDES

Groud to air defense operation simulation systems can simulate the operation effectiveness under different performance parameters of weapons and operation arranges to provide quantitative data supporting the analysis and strategy decision. As the development of applications, the scale of groud to air defense operation simulation becomes more and more large, which demand higer executing efficiency of the simulation systems. Currently, most of the groud to air defense operation simulation systems are developed based on HLA stardard and may have a performance bottleneck when applied in analytic simulation. Therefore, developing the study of simulation systems base on parallel discrete event simulation technology has importantant theoretical and practical significance for shortening running time and improving the performce to meet the demand of efficiency by groud to air defense operation simulation.Considering the demand for high performance computing by groud to air defense operation simulation, this paper develops a research on the architecture of simulation system based on parallel discrete simulation simulation, the design of event flow and communication optimization technology amied to improve the efficiency of simulation system. The main work and innovations include:1. Existing groud to air defense operation simulation systems mostly adopt the distributed architecture based on HLA/RIT and execute by time stepped pattern which lead to the low efficiency,so the systems cannot afford the need of analytic simulation applications. For this problem, the paper presents an overall architecture of groud-to-air denfense simulation based on PDES, using the the parallel discrete simulation engine YH-SUPE as a kernel and plugging in simulation objects in the simulation platform, which could easy to distribute them on multi-node and execute parallelly. The architecture connects the external module of YH-SUPE with simulation execute and control module to control multi-sample execution. So, the simulation system can achieve the multi-entity and multi-sample parallelly execution. Every simulation object uses independent data record module to record the data produced in local into files, and saves data by unified data file collect module for the display, analysis and evaluation after simulation, which can avoid performance bottleneck introduced by the centralized data recording. And then the architecture reads scenario data from database to the data buffer to avoid reading database in the simulation. All the designs can improve the executing efficiency of simulation system efficiently.2. The method of event schedule is critical for designing discrete event simulation system and using the one-to-one event schedule pattern directly cannot meet the need of different event schedule types in groud air defense operation simulation system. For this problem, based on the analysis the properties of different event types provided by YH-SUPE platform, the paper proposes the event schedule method of groud air defense operation simulation based on YH-SUPE. The method uses the simulation object event to implement the simple event schedule between different entities, local event to implement self-schedule event and undirectly interaction to implement event schedule of one-to-multi pattern. The event model of groud air defense operation simulation system based on the event schedule method is designed. Tests show the event flow model executes correctly and schedules efficiently.3. There exists massive position data exchange between different entities in the groud to air defense operation simulation system, which leads the heavy communication and influences the execution efficiency. To resolve the problem, the paper proposes an approach to publish the motion position data by using the dynamic attribution technology. By approximating the maneuvered trace of planes as the great circle dynamic position attribute, the maneuvered trace of groud entities as the rhumb line and the S maneuvered trace of missiles as a self-define dynamic position attribute, the dynamic attribution then can be distributed by distribute object in YH-SUPE. The entity interested the position can subscribe the dynamic position item and compute the postion in local. So, the approach can use the computing time in exchange of communication time to reduce the workload of network and improve the execution efficiency. Tests show the approach can reduce executing time efficiently.Based on the above research, a groud to air defense operation demo simulation system is designed and implemented on the YH-SUPE simulation platform. Tests show the system can achieve a simulation push on speed of 1:80, which can well meet the demand of executing efficiency by groud air defense operation simulation system.