Defense Advanced Research Projects AgencyTagged Content List

Photonics, Optics and Lasers

Science and technology dealing with the transmission and manipulation of light

Showing 25 results for Photonics + Spectrum RSS
02/28/2020
Autonomous and semi-autonomous systems need active illumination to navigate at night or underground. Switching on visible headlights or some other emitting system like lidar, however, has a significant drawback: It allows adversaries to detect a vehicle’s presence, in some cases from long distances away.
March 16, 2020,
Webcast Only
The Defense Advanced Research Projects Agency (DARPA) Defense Sciences Office (DSO) is sponsoring a Proposers Day to provide information to potential proposers on the objectives of an anticipated Broad Agency Announcement (BAA) for the Invisible Headlights program.
September 20, 2016,
DARPA Conference Center
The Defense Advanced Research Projects Agency (DARPA) Microsystems Technology Office (MTO) is sponsoring a Proposers Day to present its technical vision and mission and to provide information to potential proposers on the MTO Office-Wide Broad Agency Announcement (BAA) and the anticipated Commercial Performer Program Announcement.
Conventional analog-to-digital converters (ADCs) are fundamentally limited by timing jitter in the sampling source, forcing a trade-off between bandwidth and resolution. As a result, radio frequency (RF) systems are typically designed with narrow-bandwidth channels. These engineering constraints present problems when faced with broadband signals and ultra-short pulses. At high carrier frequencies, RF systems are further limited by the tuner that must mix down to baseband for electronic digitization.
In counterinsurgent, counter-terror campaigns, risks associated with conventional weapons in combat operations can severely limit their use and effectiveness, particularly in urban environments. These risks are largely associated with challenges posed by confining intended effects to adversary combatants and forces.