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Communication and, United States

Schneider J.R.,Communication and Networking Systems Group
Johns Hopkins APL Technical Digest (Applied Physics Laboratory) | Year: 2015

In the tactical domain, there are many instances in which disparate or geographically dispersed network management systems are unable to share network information electronically. When information exchanges do exist, they often rely mostly on person-to-person communications or on specific point-to-point electronic interfaces between network management systems. There is no common implementation of network management systems across the tactical domain. Each system performs network management functions by using its own information semantics and structures. Because each system is implemented independently, it is difficult to exchange information among systems. Ontology technology and mediation and transformation processing are known techniques that can significantly improve interoperability among network management systems. Ontology technology enables a common and universal exchange of network information while allowing each system to continue doing its usual business. Ontology technology is implemented by wrapping native network management systems, thereby allowing information to be exchanged with any participating management system. Ontology is widely used in the commercial environment and could enhance interoperability within the tactical domain. The Johns Hopkins University Applied Physics Laboratory (APL) is developing an ontology-based network management model for use in the tactical domain and is building a reference implementation demonstrating the interoperability that can be achieved with ontology. © 2015, John Hopkins University. All rights reserved. Source


Oetting J.D.,Communication and Networking Systems Group
Johns Hopkins APL Technical Digest (Applied Physics Laboratory) | Year: 2011

The Navy has used the military UHF band (300-400 MHz) for satellite communications (SATCOM) since the launch of the first Fleet Satellite Communications (FLTSATCOM) satellite in 1978. In the past 30 years, several replacement constellations have been launched, and UHF satellites have become joint assets used by all the services; however, the communication waveforms and architectures have not changed significantly. This article describes a radically new UHF SATCOM system called the Mobile User Objective System (MUOS). MUOS, which is based on the same technology now being widely deployed on terrestrial cellular phone systems, will revolutionize the way that the DoD uses UHF SATCOM. This article describes the MUOS system architecture, APL's role in the MUOS program, and the impact of our work on other programs at APL. Source


Brown K.D.,Resilient Tactical Communications Section | Huang T.-T.C.,APL | Matties M.A.,Communication and Networking Systems Group | Reeves J.D.,Aerospace Systems Analysis Group | Rouff C.A.,Communication and Networking Systems Group
Johns Hopkins APL Technical Digest (Applied Physics Laboratory) | Year: 2015

This article highlights the critical importance of systems engineering methodology and its influence on downstream outcomes in complex engineering concepts. It makes a development case for complex systems of systems that contrasts netted with traditional intelligence, surveillance, and reconnaissance. Model-based systems engineering methods supported by development infrastructure can significantly impact the life-cycle affordability of complex systems of systems. The long-standing systems engineering practices of the Johns Hopkins University Applied Physics Laboratory (APL), the International Council on Systems Engineering, and the Open Group Future Airborne Capability Environment Consortium, as well as the objectives for projects such as the Defense Advanced Research Projects Agency Air Dominance Initiative, provide context for an APL brand of model-based methods. This article introduces an APL model-based systems engineering methodology within an integrated development environment and discusses the methodology in the context of a netted intelligence, surveillance, and reconnaissance concept. © 2015, John Hopkins University. All rights reserved. Source

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