The Research And Implement Of Subscribe And Publish In Aviation System

With the rapid developm ent of IT tec hnology, the implementation of distributed computing and storage capacity of the m iddleware technology has becom e one of the key technologies of Aviation Electronics.It can not only effectively, transparent sharing of all resources on the network, but also can provide good support to the communication platform.But with the developm ent of inte grated technology in avionics system, not only functional requirements on middleware, but also the real-time, reliability constraint, required to obtain the right da ta at the righ t time and the right place, the trad itional middleware technology, such as C/S mode of CORBA and JMS m iddleware based on message mode it is difficult to meet the needs of such.DDS is iss ued by OMG, a set of interconnected communication protocol and application programming interface, which defines a data centric publish / sub scribe mechanism, both sides does not need to know any information of the other party, realize the system architecture, a loosely coupled via DDS, aviation electronic communication network to construct efficient, extensible, platform independent, location independent, provide a strong support for the comprehensive.This paper takes DDS as the m ain research object, study its standard, syste m architecture and quality services, and on this basis to achieve a real-time DDS middleware-MyDDS, t he method can be a pplied in a simulation of comm unication system in CETC-10. The main contents of this paper include:1 Research on the DDS standard.Completing the standard DDS. Including the publish sub scribe mechanism and architecture.2 Research on DDS-QosOn the OMG-DDS Qos architecture proposed by the in-depth analysis and research, for each of the Qos in detail.3 Implement the publish / subscribe mechanismBased on the publish / subscribe m echanism research on real-tim e CORBA middleware, MyDDS developm ent environment based on TAO construction, and completed the design and implementation of MyDDS.4 Test and ApplicationBuild the test p latform in the Etherne t environment, the com pletion of the performance test of DDS products from MyDDS, test items include rate and delay, and finally applied to a UAV Simulation Platform.