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Distributed virtual reality technology is evolving virtual reality technology and computer network technology combined with the product, it has been very successfully used in military, aerospace, medical and entertainment fields, and in education and training, engineering, design and manufacturing, commerce, etc. has shown a good application prospect. This research project distributed virtual target test system is a distributed virtual reality system, it is a new missile development, testing, optimization and evaluation of technical support. Therefore, the key technology for distributed virtual reality research also has a high theoretical and practical value. Paper combines the distributed virtual target test system projects to real-time as the core platform in building the system, based on real-time data on the system, respectively, communication, mass data management, task management and scheduling system, some of the key technologies such as time management conduct in-depth research. Papers in contrast with the traditional real-time network, based on the target test system for distributed virtual special requirements for real-time constructed based VMIPCI-5565 reflective memory card ring network as a real-time system platform. In the analysis of distributed virtual target test system for data communication needs, based on the thesis of the real-time data communication, certainty and reliability technologies. By reducing the transmission delay and use dead reckoning (DeadReckoning, DR) technology to reduce the communication load two strategies to ensure the real-time data communication; For certainty, through the register insertion technique to achieve; For reliability, error management and conservation measures through and redundant transmission mode to ensure the reliability of data transmission. For the system of massive real-time data management, establishing an autonomous databases distributed architecture, the use of distributed real-time memory database technology in real time efficient storage, query and management, and the design of internal and external memory data exchange strategies and algorithms processes. Papers in the analysis of static and dynamic task scheduling strategy, based on the target test system for distributed virtual particularity, design and improved rate monotonic scheduling algorithm (rate monotonic, RM), to achieve a real-time task management system, the algorithm also applies to aperiodic task scheduling, and transient overload the system has certain adaptability; papers designed by the software clock synchronization time consistency algorithm, the system time management. Papers on distributed virtual target test system analysis and design, based on in-depth study of the key technology, and part of the technical performance test, analysis and evaluation results show that the system structure design is reasonable, the use of technology can be a good to meet the system requirements, but also for the future of distributed virtual reality provides a theoretical basis and technical support.
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