www射-国产免费一级-欧美福利-亚洲成人福利-成人一区在线观看-亚州成人

US EUROPE AFRICA ASIA 中文
China / Innovation

Document to navigate Beidou to be released

By Wang Xiaodong (China Daily) Updated: 2012-11-10 06:19

China is likely to release a document deemed vital for mass application of its Beidou navigation satellite system by the end of the year as it is ready to provide services overseas, according to experts.

"As the Beidou navigation satellite system is to officially provide services to customers in the Asia-Pacific region early next year, its official interface control document, or ICD, will be likely made public around the end of the year, to encourage Beidou's application overseas," Yang Yuanxi, an academician with the Chinese Academy of Sciences and a prominent geodesy scientist, said on the sidelines of the seventh meeting of the International Committee on Global Navigation Satellite Systems. The meeting ended in Beijing on Friday.

China sent the 16th satellite of the Beidou system into space last month, completing its network for the Asia-Pacific region. The plan is for the system to consist of 35 satellites and provide global services by about 2020.

"Releasing ICD is very important as the data it contains is required for the manufacturing, sales and use of terminals," said Yang.

A test version of Beidou's ICD was released at the end of last year, when the system was launched for trial use.

The interface is a communication protocol and works to link navigation satellite signals to the terminals. Although domestic enterprises can obtain the interface for Beidou, it is still inaccessible to overseas manufacturers, according to Cao Chong, director of the Advisory Center of China Association for Global Navigation Satellite Systems.

The Beidou system has been gaining popularity in China and is now ready to provide services to overseas users, Yang said.

"We can produce enough terminals for overseas users," Yang said. "Customers from countries such as Pakistan, Mongolia, South Korea and Australia have expressed a desire for the Beidou services due to its unique advantages."

Because Beidou's interface control document has not been officially released, the satellite system is only in trial use in some countries, a factor that hinders production of Beidou terminals by overseas manufacturers, Yang said.

The interface for the global positioning system, the GPS, has been made public, enabling enterprises all over the world to manufacture GPS-based products.

Larry Hothem, a scientist at the US Geological Survey, said the lack of the document makes manufacturers outside China reluctant to build the equipment used for the Beidou system, as "they are not sure that they get the right information".

"The signal requires a special design in the hardware. They need to know what that is to proceed with the design," he said.

Lu Xiaochun, a professor at the National Time Service Center at the Chinese Academy of Sciences, said the Beidou system is now capable of serving most parts of the Asia-Pacific, but it is still in the trial stage, and its performance is not yet guaranteed.

"The interface should be released before Beidou officially provides services to the Asia-Pacific early next year," she said.

After the interface is released, overseas manufacturers will be able to design and produce terminals based on Beidou, which will greatly promote the application of the system, according to Cao, from the Advisory Center of China Association for Global Navigation Satellite Systems.

The Beidou navigation satellite system will be compatible and interoperable with all other major global navigation satellite systems, such as GPS and GLONASS, to improve service performance, according to Wang Li, director of the International Cooperation Research Center, China Satellite Navigation Office.

"The concept of compatibility and interoperability among global navigation satellite systems has been widely accepted, but some technical difficulties have to be overcome," she said. "Experts from different countries are actively conducting technical research to achieve this goal."

"China is a big country, and opening more technology to the international community will speed up its development, such as the application of Beidou among the international community," said Sompoch Puntavungkoon, an official with the Asia-Pacific Space Cooperation Organization.

Contact the writer at wangxiaodong@chinadaily.com.cn

Highlights
Hot Topics
...
主站蜘蛛池模板: 亚洲精品天堂一区 | 87精品福利视频在线观看 | 三级毛片网 | 国产精品99在线观看 | 国产日韩欧美精品一区二区三区 | 久久国产精品免费一区二区三区 | 国产亚洲福利精品一区二区 | 国产亚洲美女精品久久 | 视频一区精品 | 1717she国产精品免费视频 | 亚洲国产日产韩国欧美综合 | 精品久久久久久国产91 | 看真人视频一级毛片 | 欧洲成人在线 | 欧美影院网站视频观看 | 成人综合在线视频免费观看 | 91精品国产免费网站 | 九九99久久精品国产 | 手机成人看片 | 亚洲日本欧美产综合在线 | 欧美一级片在线免费观看 | 一本色道久久综合亚洲精品高清 | 久热精品6 | 成人午夜私人影院入口 | 久久精品视频16 | 国产精品久久久久久久午夜片 | 国产精品一区二区国产 | 欧美一区二区三区在观看 | 国产亚洲精品久久久久久久久激情 | 成人观看的视频三级 | 国产精品极品美女自在线看免费一区二区 | 中文字幕或区 | 免费观看久久 | 在线毛片网站 | 国产午夜精品理论片久久影视 | 一区二区在线免费视频 | 成人精品视频在线观看 | 亚洲国产精品成人综合久久久 | 国产欧美日韩在线一区二区不卡 | 国产精品国产三级国产an | 精品国产高清不卡毛片 |