Defense Advanced Research Projects AgencyTagged Content List

Position, Navigation and Timing

Technologies relating to precision geolocation, time-keeping and synchronization

Showing 46 results for PNT RSS
Defense applications, such as geo-location, navigation, communication, coherent imaging and radar, depend on the generation and transmission of stable, agile electromagnetic radiation. Improved radiation sources—for example, lower noise microwaves or higher flux x-rays—could enhance existing capabilities and enable entirely new technologies.
Typically, the performance of measurement devices is limited by deleterious effects such as thermal noise and vibration. Notable exceptions are atomic clocks, which operate very near their fundamental limits. Driving devices to their physical limits will open new application spaces critical to future DoD systems. Indeed, many defense-critical applications already require exceptionally precise time and frequency standards enabled only by atomic clocks. The Global Positioning System (GPS) and the internet are two key examples.
Access to the electromagnetic spectrum is critical to military forces today. Electronic warfare seeks to deny or degrade adversaries’ access to spectrum while minimizing impacts on friendly forces. Currently, electronic warfare strikes are conducted primarily by monolithic, high-value platforms that can have powerful but insufficiently precise effects. These strikes typically impact large geographic areas, for example, and may inadvertently deny spectrum access to friendly users.
The Global Positioning System (GPS) is the predominant means of positioning, navigation, and timing (PNT) for a majority of systems and applications, both military and civilian. The Spatial, Temporal, and Orientation Information in Contested Environments (STOIC) program seeks to develop a backup PNT system that provides GPS-level and better performance without relying on GPS.
| PNT | Spectrum |
The ultimate goal of the Platform for Acquisition, Logging, and Analysis of Devices for Inertial Navigation and Timing (PALADIN&T) initiative is the development of a universal testing platform to allow rapid, uniform early-stage Test and Evaluation (T&E) of prototypes for Positioning, Navigation, and Timing (PNT) tasks. Currently, the T&E of PNT prototypes is very much a boutique process, where a customized setup (i.e. mechanical mounting, the electrical interfaces, etc.) is built for each individual device.
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