Defense Advanced Research Projects AgencyTagged Content List

Electromagnetic Spectrum and Bandwidth

Novel concepts and technologies for maximizing use of the electromagnetic spectrum

Showing 35 results for Spectrum + Programs RSS
Modern expeditionary military missions generate and exchange massive amounts of data that are used to produce situational awareness and guide decision-making. Much of the data must travel long distances along backbone communications networks composed of high-capacity links that interconnect command centers.
Current airborne electronic warfare (EW) systems must first identify a threat radar to determine the appropriate preprogrammed electronic countermeasure (ECM) technique. This approach loses effectiveness as radars evolve from fixed analog systems to programmable digital variants with unknown behaviors and agile waveforms. Future radars will likely present an even greater challenge as they will be capable of sensing the environment and adapting their transmissions and signal processing to maximize performance and mitigate interference effects.
| EW | ISR | Spectrum |
The Adaptive RF Technology (ART) program aims to significantly advance the hardware used in communication radios by developing a fully adaptive and reconfigurable architecture that is agnostic to specified waveforms and standards. ART-enabled “cognitive” radios would be able to reconfigure themselves to operate in any frequency band with any modulation and for multiple access specifications under a range of environmental and operating conditions.
Today’s interconnected wireless world has led to congested airwaves, making Radio Frequency (RF) management a hot topic. For warfighters overseas, efficiently managing the congested RF spectrum is critical to ensure effective communications and intelligence gathering.
The ability to see farther, with higher clarity, and through darkness and/or obscurants, is vital to nearly all military operations. At the same time, for advanced imaging systems there is an immense need to increase field of view (FOV), resolution, and day/night capability at reduced size, weight and power (SWaP) and cost. The main driver for these requirements is the need to provide dismounted soldiers and near-ground support platforms with the best available imaging tools to enhance combat effectiveness.