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中国发射超级卫星 或实现宽带上网地区的进一步拓展

2017-09-11 09:36:26   中国青年网

我国发射一枚超级卫星:以后,万米高空、茫茫大海都可以高速上网

静止轨道通信卫星代表着一个国家卫星通信的发展水平,它是构成信息高速公路基础的重要资源,是一个国家综合实力、技术水平的重要体现。

经常在国内旅行的人都知道,在飞行的飞机上、在远洋航行的船舶上,手机、笔记本是上不了网络的,同样在高速运行的高铁上,手机信号也是时断时续,但是随着中国新一代通信卫星的发展,空中上网聊天、远洋视频娱乐、偏远山区信号全覆盖将成为现实。

我国自主研发技术打破国外垄断空中通信

海上视频将不再是梦

2017年4月12日,中国在西昌卫星发射中心采用长征三号乙运载火箭成功发射实践十三号卫星,卫星完成在轨试验后被命名为中星16号。这是我国首颗高通量通信卫星,通信总容量超过20G,真正意义上实现了自主通信卫星的宽带应用。

航天科技集团五院高级工程师张伟: 高通量这个技术的发展,代表着我们现在地面,你可以用我们的卫星来实现视频。原来只能实现一个语音通信的功能,现在我们可以视频了,那么还有一个很大的应用方向就是我们的飞机。这是我国首次在通信卫星上,使用Ka频段宽带通信技术。

卫星容量其实就像公路一样,原来通信卫星的C频段以及Ku频段容量最多只能容纳两辆车同时前进,所能运载的货物,也就是信息数据是有限的。但是Ka频段的卫星容量则要大很多,它可以同时在公路上行驶10辆或者更多的汽车,所能运载的信息数据量也远超其它频段。这项技术的突破,意味着未来通过通信卫星可以随时随地实现宽带上网,特别是在地面通信网络无法覆盖的地区,以及飞机、高铁、轮船等交通工具上,都可以实现宽带通信。

张伟: 现在飞机上大家都知道没法实现通信,未来当中的HTS(高通量通信卫星)的技术推广以后,我们以后在飞机上面也能够基于卫星来实现我们的通信,包括高铁、船等等,HTS都是一个很热门的应用方向。

张伟告诉记者,依托高通量通信卫星技术,未来将会构建卫星宽带通信网络,到时候无论身处万米高空的飞机、急速飞驰的高铁,还是茫茫大海的轮船上,以及没有人烟的荒漠、深山、海岛,都可以高速浏览网络,视频通话。

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