O'Reilly logo

GMDSS for Navigators by Peter Smith, John Seaton

Stay ahead with the world's most comprehensive technology and business learning platform.

With Safari, you learn the way you learn best. Get unlimited access to videos, live online training, learning paths, books, tutorials, and more.

Start Free Trial

No credit card required

The General Principles and Basic Features of the Maritime Mobile Satellite Service

 

BASIC KNOWLEDGE OF SATELLITE COMMUNICATIONS

INMARSAT Space Segment

This consists of the satellites and the radio communications transponders and telemetry and tracking devices which they carry. Four active satellites some 36,000 km above the equator between them cover the entire Earth's surface except for the Polar regions. The satellites are in geo-synchronous orbits and always ‘see’ the same area. Thus there is one satellite for the Pacific Ocean Area, one satellite for the Indian Ocean Area and two satellites for Atlantic Ocean Area coverage. The Space Segment also includes ground control facilities.

Modes of Communication

Telex Services are available in ship-shore ...

With Safari, you learn the way you learn best. Get unlimited access to videos, live online training, learning paths, books, interactive tutorials, and more.

Start Free Trial

No credit card required