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近五年来一直保证着海洋通讯的海事卫星,从今年起将过渡到由国际海事通讯系统统一管理。这种卫星已有三颗,最近还准备发射第四颗,它们都被发射到赤道上空22,240公里的同步轨道上、覆盖着大西洋、太平洋和印度洋等各大洋。海事卫星提供的服务有:电报、电话、无线电传真、宽频带数据传输等各种远距离通讯。还保证着各地面站协调联络工作。估计过渡到国际系统管理后,服务范围还将进一步扩大。
In the past five years, maritime satellites that have always promised maritime communications have been promulgated this year and will be under the unified management of the international maritime communications system. Three of these satellites are currently in preparation for launching a fourth, all of which are launched on 22,240 kilometers of geostationary orbit over the equator, covering the oceans of the Atlantic, Pacific and Indian Oceans. Maritime satellite services include: telegraph, telephone, radio fax, broadband data transmission and other long-distance communications. Also ensure that all the ground station coordination liaison work. Once the transition to international system management is estimated, the scope of services will be further expanded.