Module Development For Data Distribution Management Of Middleware In Joint Test Platform

With the rise of the distributed joint test model,and the increasing scale of the test system,information interaction between participants within the system is becoming more and more frequent.Due to the limitation of the network bandwidth resources,sending and receiving a large amount of invalid data grea tly consumes network resources,which seriously effects the real-time system and the reliability of data.Thus,reducing redundant data in the network and improving the efficiency of data transmission are of great significance to optimize the overall perfo rmance of distributed test system in large scale.This paper focuses on the research on the mechanism of data distribution management and the algorithms related to joint test platform middleware,and then develop a module of data distribution and management to improve the performance of middleware-data transmission.The concrete content is as follows:Analyzing high-efficiency information transmission methods in distributed simulation systems based on content-based publish/subscribe system and high-level architecture(HLA).Designing the mechanism of data distribution management based on the joint test platform middleware of peer service model.Proposing a interested data filtering expression method with general adaptability based on the middleware operating principle of joint test platform and object model standard.Studying the algorithm of region matching in HLA distributed simulation system and the data-filtering algorithm in content-based system,and then designing different matching algorithms of data distribution management module of joint test platform middleware according to different application requirements.In order to ensure the accuracy of the match result,an exactly match method is adopted in the region matching algorithm.An algorithm that combined with multi-level indexing and counting method is adopted in the content-based filtering algorithm to improve the efficiency of event filtering.Designing data distribution management modules based on region match and content filtering.Data distribution management module based on region match combined region match and multicast network,and the regions are matched before the system runs to establish a multicast channel for the region in advance.This method is suitable for applications where the requirment of transmission efficiency is high.Data distribution management module based on content filtering combined content-based filtering algorithm and a parallel distribution algorithm,which can complete content filter in the process of running the system as well as reduce waiting time of subscribe nodes,so this method is suitable for applications where the requirement of data filtering capability is high.A test system is built based on joint test platform to verify the function of the software.The results of the test indicate that this software is characterized with complete function,stable performance.The data distribution management module can provide a flexible expression of interested data,reduce the network load,and improve the efficiency of data transmission.