DDS

Abstract: The OMG DDS (Data Distribution Service) standard specifies a middleware for distributing real-time data using a publish-subscribe data-centric approach. Until now, DDS systems have been restricted to a single and isolated DDS domain, normally deployed within a single multicast-enabled LAN. As systems grow larger, the need to interconnect different DDS domains arises. In this paper, we consider the problem of communicating disjoint data-spaces that may use different schemas to refer to similar information.

Summary: This paper provided a brief overview of the experimental proximity operations HUD developed at LRT. It then proceeded to describe the evaluation experiments conducted to determine which HUD configuration is most beneficial for operator performance. The results of these experiments are discussed and some conclusions are drawn for future development and research work. Furthermore, the adapta- tions of the HUD made when incorporating it into the Third Eye situation awareness enhancement operator interface are detailed.

Abstract: The Data Distribution Service (DDS) middleware has recently been standardized by the OMG. Prior to data communication, a discovery protocol had to locate and obtain remote DDS entities and their attributes. Specifically, DDS discovery matches the DataWriters (DWs) and DataReaders (DRs) entities (Endpoints) situated in different network nodes. DDS specification does not specify how this discovery is translated “into the wire”.

Abstract: Modern military satellite communications terminals have typically been built as multiprocessor systems. Because of increasing pressure for reuse and modularity, current programs have been encouraged to consider the use of component middleware. While Common Object Request Broker Architecture is the most mature middleware standard available, its invocation semantics present considerable challenges for the development of such systems.

This whitepaper describes the basic characteristics of real-world systems programming, how the DDS middleware technology can be used to integrate them, and a set of “best practices” guidelines that should be applied when using DDS to implement these systems.