GPS works by satellites broadcasting precise time signals, allowing receivers to calculate distance at the speed of light, ...

A 45-foot Response Boat-Medium from Coast Guard Station Seattle and an MH-65 Dolphin helicopter from Coast Guard Air Station Port Angeles conduct night hoisting training on April 4, 2016. (U.S. Coast ...

Oct. 1995 Level of Government: State Function: Disaster Management Problem/situation: When earthquakes or other disasters strike, it's difficult to give a location for features without addresses.

On June 30, 2020 the Coast Guard switched off the last Differential Global Positioning System (DGPS) signals after more than 25 years of service. With the improved accuracy and integrity of ...

A system that improves the accuracy of the GPS satellite navigation system. A satellite's positioning accuracy is impeded by errors in its clock and signal delays caused by atmospheric conditions.

In February 2022, the USS Essex experienced a unique navigation scenario: all electronic navigation systems on its bridge were intentionally disabled for five days. This forced the crew to traverse ...

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Raytheon has demonstrated differential global positioning system (DGPS) precision approaches performed by a civil aircraft using the manufacturer's ground station originally developed for the military ...

No audio available for this content. Recommendation PNT27-04. (Photo: Presentation by John W. Betz, PhD Member, National Space‐Based PNT Advisory Board on May 29, 2024) The November and December ...

Alaska's Richardson Highway links Valdez to the rest of the state. Closing the road isn't an option, even in the worst winter weather. If snow plow drivers who work the road through Alaska's Thompson ...

“What’s new with GPS?” people often ask me when I tell them my job. Recently, I have been responding by telling them about the other three GNSS constellations now fully available. However, as ...