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卫星移动通信覆盖范围大.对地面设施依赖小.可在非常偏远或者基础设施遭受严重破坏的地区进行可靠的通信联系.因此尤其适用于反恐怖等危机管理和自然灾害救援中的应急通信。此次汶川大地震造成光缆线路、电力线路中断.受灾地区5400多座移动基站损毁,使四川、甘肃、灾区常规通信全部中断。而且由于道路,电力等基础设施严重受损.通信设施的抢修也遇到了巨大困难。此时,移动卫星通信成为
Satellite mobile communications cover a large area and rely less on ground-based facilities, providing reliable communications in areas that are remote or heavily damaged by infrastructure, making them especially suitable for emergency communications in crisis management such as anti-terrorism and natural disaster relief. The Wenchuan earthquake caused fiber optic cable lines and power lines to be interrupted, and more than 5,400 mobile stations in the affected areas were damaged, disrupting routine communications in Sichuan, Gansu and disaster areas. In addition, due to the serious damage to the infrastructure such as roads and electricity, tremendous difficulties have also been encountered in the repair of communications facilities. At this point, mobile satellite communications become