The U.S. Coast Guard (USCG) is working to provide Differential Global Po sitioning System (DGPS) service for harbor and harbor approach navigation by 1996. DGPS technology is the first to economically ...

Trimble and Saab TransponderTech AB are cooperating to integrate their differential GPS (DGPS) solutions for enhanced marine navigation. Saab and Trimble will ...

"In these difficult conditions, with a need for high-accuracy navigation, there tends to be an over-dependence on DGPS technology which can lead to a false feeling of security. These errors have ...

GPS is the modern answer to the ancient question about one’s place in the world yet it has its limitations. It depends on the time of flight of radio signals emitted by satellites twenty thousand ...

provide some protection against interfering signals. Although quantitative measures of resistance to RF interference, such as jammer-to-signal ratio (J/S) measured in decibels (dB) do exist, these ...

Researchers are investigating how to prevent shipping Global Positioning Signals (GPS) being jammed in potential cyberattacks that may cause vessels to go off course and collide or run aground. The ...