久久亚洲国产成人影院-久久亚洲国产的中文-久久亚洲国产高清-久久亚洲国产精品-亚洲图片偷拍自拍-亚洲图色视频

chinadaily.com.cn
left corner left corner
China Daily Website

China builds highly accurate navigation system

Updated: 2012-10-10 20:59
By Cheng Yingqi ( chinadaily.com.cn)

China is building a highly accurate navigation system, the Ministry of Science and Technology said.

On Tuesday, the ministry released a report on its website on a strategy seminar recently held in Beijing to discuss the latest progress in navigation technologies.

The National Remote Sensing Center of China said at the seminar that a new navigation system has been successfully tested to pinpoint positions within 0.1 meters in outdoor areas and 3 meters in indoor areas.

The Xihe system, named after a god in ancient China, has already been tested on fieldwork devices.

The center plans to develop an urban positioning system, first in large cities like Shanghai, and then across the country by the end of the 12th Five-Year Plan (2011-15).

"When you're using a navigation system like GPS in your car, the pinpoint accuracy is about 10 meters, so you will sometimes find that your actual position differs from what is shown on the navigator," said the project leader at the National Remote Sensing Center, who declined to be named due to internal regulations.

"But if you're using the Xihe system you will not have that problem, because the accuracy is 0.1 meter," the director said.

The system is based on a technology known as CRP, or Cooperative Real-time Precise positioning, which is designed to enhance the accuracy of navigation satellite systems.

There are four major navigation satellite systems: the Global Positioning System, or GPS, of the United States, Russia's Glonass, the European Union's Galileo, and China's Beidou.

Cao Jianlin, vice-minister of science and technology, said that the Xihe system is one of the country's major attempts to apply science and technology funds to solve practical problems and catch up in terms of high tech.

 
8.03K
 
...
...
...
主站蜘蛛池模板: 九九热视频在线播放 | 久久香蕉国产线看免费 | 在线免费成人 | 欧美在线高清视频 | 深夜爽爽福利gif在线观看 | 国产亚洲一区二区三区 | 国产亚洲精品资源一区 | 国产高清一国产免费软件 | 国产女主播在线 | 国产国产成人人免费影院 | 亚洲免费毛片 | 看一级特黄a大片日本片 | 97se亚洲综合在线韩国专区福利 | 一级淫片免费视频 | 欧美性毛片大片 | 美女张开腿让男人桶的 视频 | 精品视频自拍 | 一区二区视频在线 | 久久精品店 | 极品欧美 | 北条麻妃在线一区二区 | 最新国产成人综合在线观看 | 一级做a爱片特黄在线观看 一级做a爱片特黄在线观看免费看 | 欧美亚洲另类视频 | 日本成人中文字幕 | 精品在线一区二区三区 | 免费精品99久久国产综合精品 | 欧美日韩高清观看一区二区 | 黄录像欧美片在线观看 | 中文字幕视频在线观看 | 久久久久久久久久久久久久久久久 | 欧美一级高清片免费一级 | 久久99国产精一区二区三区 | 成人男女啪啪免费观看网站 | 欧美精品一区视频 | 老色99久久九九精品尤物 | 亚洲天堂免费在线视频 | 久久这里一区二区精品 | 久久国产亚洲精品 | 亚洲一区视频在线 | 日本在线视频观看 |