China's first large-capacity telecommunications satellite launches, aircraft, rail, accelerating Internet access | Telstar | practice 13th _ news
Beijing News News (reporters Li Yukun) on April 12, 19:04, China's first high throughput satellite practice 13th successful launch. Total capacity of 20Gbps practice 13th communications, above all before China developed the sum of satellite capacity. 13th satellite after the validation has completed technical trials of practice, will be named satellite, zhongxing 16th.
According to the introduction, practice 13th satellite can seamlessly "cotm", aviation, shipping, railways and other transport interchange of passengers on the world and to improve the online experience.
Download 1G data not 1 minute
Dongfanghong third b platform configuration the first star. Practice 13th Satellite System Commander Zhou Zhicheng, the "b platform of the East" is the development of new generation medium capacity satellite platform, using electric propulsion, high efficiency thermal control, lithium-ion batteries and other advanced technology, you can stand next to the international advanced level.
13th in practice in China for the first time use of Ka-band multi-beam satellite broadband communication systems, communication over 20Gbps of capacity (transmission speed-rate unit, commonly called "bandwidth"). Terminal users can quickly and easily access the network, download and return rate up to 150Mbps and 12Mbps respectively, implement satellite broadband applications in the true sense, fill the gaps in China's technology in this field.
"The fast download 1G movie, it doesn't take 1 minute. "According to Zhou Zhicheng introduced, practice 13th, satellite also in domestic high rail satellite field created has multiple" first ": first in China high rail satellite Shang using electric advance (without consumption chemical advance agent) completed full life period within North-South bit insurance task, compared Yu chemical advance" less carry many chemical fuel ", satellite hosted capacity significantly upgrade; first in China high rail satellite Shang carrying laser communications system; first in China high rail long life communications satellites Shang percent engineering of application China localization products, Changed the situation of related products have been imported.
Radical improvement in the aircraft and railway Web experience
According to statistics, the average daily number of air passengers in China more than 1.2 million people, average daily railway passenger volume reached 7.6 million people, but the passenger's Web experience is very poor: no Internet access within the aircraft cabin and intermittent cell phone signals on the high-speed trains, cruise ship pulled out of port into islands of information, passenger demand anywhere, anytime Internet access are not met for a long time.
Practice 13th satellite General Liu Fang, says, "these issues are not achieving full coverage due to mobile networks on the ground, or even covering lead switching too often, but across different regions, it is difficult to provide services for high-speed transport. ”
According to him, practice 13th satellite integration design concept of heaven and Earth, one of its major business is to provide high-speed, "cotm", through the seamless switching multibeam coordinate airborne, vehicle or terminal device of automatic trace capture capabilities, aviation, shipping, railways and other transport interchange of passengers on the world and to improve the online experience.
>: Tang Li Weishan
Article keywords:Practice of communication satellites, 13th
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中国首颗大容量通信卫星发射，飞机、高铁、上网将提速 |通信卫星|实践十三号_新闻资讯
新京报快讯（记者李玉坤）4月12日19时04分，中国首颗高通量通信卫星实践十三号成功发射。实践十三号通信总容量超过20Gbps，超过了中国之前研制的所有通信卫星容量的总和。实践十三号卫星在完成技术试验验证后，将命名为中星十六号卫星。
据介绍，实践十三号卫星可以实现无缝“动中通”，可以为航空、航运、铁路等各类交通工具上的乘客联通世界，彻底改善上网体验。
下载1G数据不用1分钟
东方红三号B平台全配置首发星。据实践十三号卫星系统总指挥周志成介绍，“东三B平台”是中国研制的最新一代中等容量通信卫星平台，采用了电推进、高效热控、锂离子蓄电池等先进技术，可以比肩国际先进水平。
实践十三号首次在中国卫星上应用Ka频段多波束宽带通信系统，通信总容量超过20Gbps（传输速数率单位，即常说的“带宽”）。用户终端可以方便快速地接入网络，下载和回传速率最高分别达到150Mbps和12Mbps，真正意义上实现了卫星通信的宽带应用，填补了中国在该领域的技术空白。
“这个速度下载1G的电影，用不了1分钟。”据周志成介绍，实践十三号卫星还在国内高轨卫星领域创造了多个“首次”：首次在中国高轨卫星上使用电推进（无需消耗化学推进剂）完成全寿命期内南北位保任务，相比于化学推进“少携带很多化学燃料”，卫星承载能力显著提升；首次在中国高轨卫星上搭载激光通信系统；首次在中国高轨长寿命通信卫星上百分之百工程化应用中国国产化产品，改变了相关产品长期依赖进口的局面。
彻底改善飞机铁路上网体验
据统计，中国平均每天的飞机乘客超过120万人，平均每天的铁路客运量达到760万人，但乘客的上网体验却非常不佳：飞机机舱内无法上网，高铁列车上手机信号时断时续，游轮驶离港口后变成信息孤岛，乘客随时随地上网的需求长期得不到满足。
实践十三号卫星工程总师刘方说，“这些问题是由于地面移动网络无法实现全面覆盖，或即使能覆盖、但跨越不同区域导致切换过于频繁，难以为高速交通工具提供服务。”
据他介绍，实践十三号卫星采用天地一体化设计理念，其中一项重要业务就是提供高速“动中通”，通过多波束无缝切换配合机载、车载或船载终端的自动跟踪捕获功能，可以为航空、航运、铁路等各类交通工具上的乘客联通世界，彻底改善上网体验。
>责任编辑：李伟山
文章关键词： 通信卫星 实践十三号
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