Defense Advanced Research Projects AgencyTagged Content List

Communications and Networks

All manner of sending, receiving, connecting and protecting information

Showing 31 results for Communications + Programs RSS
The electromagnetic (EM) spectrum is a scarce resource, in which a variety of friendly, unfriendly and neutral entities contend for available spectrum at any given time, location and frequency. DoD radio frequency (RF) systems, such as communication networks and radar, must operate within the context of an increasingly congested and contested electromagnetic spectrum.
Radios are used for a wide range of tasks, from the most mundane to the most critical of communications, from garage door openers to military operations. As the use of wireless technology proliferates, radios and communication devices often interfere with and disrupt other wireless devices. First responder radios need to be able to communicate reliably in such congested and contested environments and to share radio spectrum without direct coordination or spectrum preplanning.
Across the nation and around the world, the wireless revolution is fueling a voracious demand for access to the radio frequency (RF) spectrum. In the civilian sector, consumer devices from smartphones to wearable fitness recorders to smart kitchen appliances are competing for bandwidth. Managing this increasing demand, while combating what appears to be a looming scarcity of RF spectrum is a serious problem for our nation, militarily, socially, and economically.
The Tactical Undersea Network Architectures (TUNA) program seeks to develop and demonstrate novel optical-fiber-based technology options and designs to temporarily restore tactical data network connectivity in a contested environment. TUNA is currently in an initial phase that emphasizes concept and technology development in three technical areas: system design, small fiber optic cable systems, and buoy nodes.
The undersea domain imposes well-known limits on communication and therefore the capacity to transfer the right information necessary to its intended purpose. The TIMEly program aims to develop concepts for a heterogeneous underwater network architecture that enables the vision of mosaic warfare by the contemporaneous composition of effect chains from available assets in any domain, but with an emphasis on the underwater domain in order to provide options for execution on the fly.