打破惯例！北斗系统新技术超过70%

北斗三号全球卫星导航系统

BeiDou Navigation Satellite System (BDS-3)

2017年6月9日，参观者在第二十届中国北京国际科技产业博览会上参观展出的北斗卫星导航系统模型。 The State Council Information Office of China held a press conference on Monday on the completion and commissioning of the BeiDou Navigation Satellite System (BDS-3).

北斗三号工程卫星系统总师林宝军介绍说，卫星发射上天以后硬件没有办法更改了，要通过在轨赋能技术解决后面问题。

Lin Baojun, a chief designer of Beidou's third-generation satellite, said at a news conference on Monday in Beijing that once a satellite is launched, it is virtually impossible for its hardware to be modified, so designers and engineers need to optimize its operating system and inject new functions into the spacecraft on a regular basis.

就好像手机一样，手机可以通过软件升级来更新系统，我们可以下载一个新的APP，增加新的能力，我们这种能力在卫星上叫做“软件重构和在轨赋能”，当卫星有了这种能力之后，卫星在发射上天后就可以完成性能、能力的持续改进。

"This is like what we do with our mobile phones – we download a new app to give the phone more functions," said the designer from the Chinese Academy of Sciences' Innovation Academy for Microsatellites. "With this method, our satellites will be able to receive regular improvement in orbit."

在工程设计之初，我们打破以往新技术不超过30%的惯例，在配置上尽量进行前瞻性的规划，尽量采用一系列的创新技术。我们的新技术甚至超过70%，像当今新技术不断涌现、系统更新周期很快的情况下，这种做法更有利于提高系统的性能。

Usually, a satellite will employ no more than 30 percent of new technologies to guarantee low technical risks, but in some Beidou satellites, as much as 70 percent of their technologies had been new to such spacecraft.

公开资料显示，北斗卫星导航系统 6月23日，北斗系统第五十五颗导航卫星，同时也是北斗三号最后一颗全球组网卫星成功发射，相比原计划提前半年完成部署。至此，北斗三号全球卫星导航系统正式建成。

China's BeiDou navigation project started in 1994. The launch of the last BDS-3 constellation satellite from Xichang Satellite Launch Center in Southwest China's Sichuan province marks China's completion of its self-developed BeiDou satellite constellation.

2020年6月23日，北斗三号最后一颗全球组网卫星顺利进入预定轨道，发射任务取得圆满成功。 Beidou products have been exported to more than 120 countries and regions, providing services to over 100 million users.

【相关词汇】

国务院资讯办 State Council Information Office of China

北斗三号全球卫星导航系统 BeiDou Navigation Satellite System (BDS-3)

空间导航系统 space-based navigation system

卫星 satellite

助推火箭 booster rocket

发射场 launch site

可重复使用运载火箭 reusable carrier rocket

卫星导航 satellite navigation