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 ...

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 ...

He questioned how such a rule could come into effect without proper legislation and criticized officials for allowing what he called an "illegal process." Row over DGPs appointment in Jharkhand ...