Based on object technology, the OMG defines an Object Management Architecture (OMA) for the support of interoperable applications across heterogeneous computing platforms. The communication core of this underlying model is the Common Object Request Broker Architecture (CORBA) that provides a framework for flexible and transparent communication between distributed objects. The adoption of this a...

To harmonize the individual architectures of the different commands, services, and agencies dealing with the development and procurement of Command, Control, Communications, Computing, Surveillance, Reconnaissance, and Intelligence (C4ISR) systems, the C4ISR Architecture Framework was developed based on existing and matured modeling techniques and methods. Within a short period, NATO adapted th...

The term “human terrain” was coined recently by the Army in response to critical needs for information about the individuals, groups and the workings of the society in general in Iraq. The call for help and the response to date has focused on tactical operations, but it is essential to consider the possibility that the tactical need points to a strategic issue for the C4ISR community. In this p...

The tactical land command, control, communications, computer and intelligence structure is essentially an array of complex and dynamic systems of systems. In this paper we address a capability deficiency in the identification and analysis of critical information requirements, flows and processes to support decision-making within this tactical structure. We accomplish this by incorporating model...

To harmonize the individual architectures of the different commands, services, and agencies dealing with the development and procurement of Command, Control, Communications, Computing, Surveillance, Reconnaissance, and Intelligence (C4ISR) systems, the C4ISR Architecture Framework was developed based on existing and matured modeling techniques and methods. Within a short period, NATO adapted th...

This paper discusses the implementation of a tactical network simulation tool. The tool is called Tactical Network Modeller (TNM). TNM uses some novel techniques to simplify the building of the network model using graph theory constrained by a hierarchical tree which reflects the organisation structure. TNM allows models to be constructed using an Application Programming Interface (API) or a no...

This paper reports on our experience gained in deriving a reference model for Command, Control, Communication, Computers and Intelligence (C4I) architectures. The reference model addresses a dilemma faced by organisations today: choosing the right distributed object platform for domain-specific applications. In making such a choice, organisations face both technological and market uncertainty a...

A consensus is growing that the Department of Defense’s vision of a future Global Information Grid will be built using architecture that takes advantage of Web services and uses standard Internet protocols, interchangeable components, and commercially available hardware and software wherever possible. This article describes the features and architecture of two systems: the Trusted Services Engi...