日韩精品久久一区二区三区_亚洲色图p_亚洲综合在线最大成人_国产中出在线观看_日韩免费_亚洲综合在线一区

Global EditionASIA 中文雙語Fran?ais
Business
Home / Business / Technology

China exports Beidou system products to over 120 countries and regions

People's Daily Online | Updated: 2020-08-07 16:41
Share
Share - WeChat

 

A man operates a Beidou-based drone in Hanzhong, Northwest China's Shaanxi province to take videos and pictures of the mountains for flood control, June 23. [Photo/People's Daily Online]

China's BeiDou Navigation Satellite System (BDS-3) was officially commissioned recently, which marked a success of the country's three-step strategy for developing the navigation satellite system and a start of the system's global service.

Starting in November 2009, the construction of the BDS-3 went through five stages, including tackling key technologies, testing satellite projects, as well as the building of simple, basic and complete systems. The constellation deployment of the BDS-3 was finished half a year in advance, which enabled the system to start full service.

The BDS-3 system involves efforts of more than 400 agencies and 300,000 research personnel and technicians, who tackled more than 160 key core technologies, from inter-satellite links to high-precision atomic clocks, and localized the production of over 500 types of equipment component. All key components of the BDS-3 were manufactured by China.

The lead time of a single satellite was reduced by 1/4, the general assembly time for carrier rockets by 1/3, and the time needed for satellites to join the constellation by 3/4.

The BDS-3 combines navigation and communication capabilities, and can provide services of navigation, short message communication, satellite-based augmentation, international search and rescue, as well as precise point positioning. All the services are covered by the Interface Control Document the system has published.

The BDS-3 has a high performance, with positioning accuracy less than 10 meters, velocity measurement accuracy less than 0.2 meter per second, timing accuracy less than 20 nanoseconds, and service availability of over 99 percent. It functions better in the Asia-Pacific region.

Short message communication and high-accuracy application are the two major features of the BDS-3. Short message communication allows users to send up to 1,000 Chinese characters (14,000 bytes) per message at most at one time, as well as pictures and voice messages. With global inter-satellite links, the system also offers global message communication services.

Based on the BDS-3, a high-accuracy augmentation network has been built on the ground with a total of nearly 3,000 ground stations. The network is able to detect abnormal movements at centimeter level in real-time, and millimeter level in post-analysis.

Ran Chengqi, Director General of China Satellite Navigation Office and the spokesperson of the BeiDou Navigation Satellite System, introduced that the Chinese navigation system has been applied in industries such as transportation, public security, disaster relief, farming and urban governance, and has been integrated into China's key basic infrastructure construction, including electricity, finance and telecom.

Ran said 28-nanometre chips that enable mobile devices to receive signals from the Beidou navigation system are in mass production, and mass manufacturing of high-precision 22-nanometre positioning chips will soon kick off, adding that a complete industrial chain of chips, modules, boards, terminals, operation services for Beidou has been built.

In the past decade, the total output value of China's satellite navigation and location services industry has been growing at an average annual rate of more than 20 percent, reaching 345 billion yuan ($49.47 billion) in 2019 and is expected to exceed 400 billion yuan this year, Ran said. As the Beidou navigation system steps up its efforts on new infrastructure, it is undergoing in-depth integration with new technologies such as new-generation communication, block chain, Internet of Things and artificial intelligence.

As one of the four major global satellite navigation systems recognized by the United Nations, Beidou has been constantly deepening its compatibility, interoperability and cooperation with the United States' GPS, Russia's GLONASS and the EU's Galileo. It has also entered international organizations of civil aviation, maritime affairs, search and rescue satellite, and mobile communication. Multiple international standards related to BDS have been released. So far, China has exported its basic products of the Beidou Navigation Satellite System to more than 120 countries and regions, offering services for over 100 million users.

According to Ran, China has started construction of the next-generation Beidou navigation after the completion of the BDS-3.

"A more ubiquitous, integrated and intelligent navigation and timing system with comprehensive national positioning is scheduled to be established by 2035, so as to offer supports for future smart and unmanned development, promote upgrading of the system, integrate emerging technologies, develop quantum navigation and all-source navigation, and build a time and space services infrastructure that is all-dimensional, standardized, high-accuracy, smart, secure and efficient," Ran said.

Top
BACK TO THE TOP
English
Copyright 1995 - . All rights reserved. The content (including but not limited to text, photo, multimedia information, etc) published in this site belongs to China Daily Information Co (CDIC). Without written authorization from CDIC, such content shall not be republished or used in any form. Note: Browsers with 1024*768 or higher resolution are suggested for this site.
License for publishing multimedia online 0108263

Registration Number: 130349
FOLLOW US
CLOSE
 
主站蜘蛛池模板: 无码色情影片视频在线看免费 | a毛片在线看免费观看 | 国产成人在线一区二区 | 亚洲精品福利一区二区三区 | 加勒比色综合 | 男女全黄做爰视频免费看 | 91探花视频在线观看 | 亚洲宗合 | 国产免费播放一区二区 | 亚洲欧美中文日韩二区一区 | a级毛片免费高清视频 | 九九热爱视频精品视频高清 | 成人国产欧美精品一区二区 | 国产精品久久久久一区二区 | 在线观看毛片视频 | 久久人人爽人人爽人人片av不 | 亚洲综合激情小说 | 香蕉成人国产精品免费看网站 | 国产中文字幕在线播放 | 四虎影视网站 | 91网页视频入口在线观看 | 麻豆国产| 美女福利视频国产免费观看 | 日韩精品一区二区三区在线播放 | 精品欧美一区二区三区久久久小说 | xxxxhd73国产 | 四虎永久免费地址ww 41.6 | 在线视频综合视频免费观看 | 春宵福利网站在线观看 | 色婷婷综合在线 | 91资源在线观看 | 天堂成人| 人阁色第四影院在线电影 | 国产精品伊人 | 午夜精品久久久久久91 | 国产精品国产三级在线专区 | 国产浮力第一页 | 亚洲国产一区二区视频 | 欧美精品无需播放器在线观看 | 亚洲免费在线播放 | 亚洲一区免费在线观看 |