INMARSAT Second Generation Satellites for Mobile Communications

摘要

The first of Inmarsat's(International Maritime Satellite Organization)second generation satellites has recently begun operations in the Indian Ocean Region.The second generation programme comprises a total of 4 spacecraft,aimed at meeting the needs originated by the rapid expansion of the system and the introduction of new mobile communications services. This paper outlines the essentials of the spacecraft design and considers the main characteristics of the communications transponder. its design and technology，the requirements,the design solutions and the test program.The results of the in-orbit-tests carried out on the first spacecraft are also addressed.