男友太凶猛1v1高h,大地资源在线资源免费观看 ,人妻少妇精品视频二区,极度sm残忍bdsm变态

US EUROPE AFRICA ASIA 中文
Business / Industries

China unveils large radio telescope in Shanghai

(Xinhua) Updated: 2012-10-29 11:16

SHANGHAI -- A massive radio telescope for use in space observation was unveiled Sunday at the foot of Sheshan Mountain in Shanghai.

The telescope will be used to track and collect data from satellites and space probes.

The newly-built radio telescope can pick up eight different frequency bands and also track Earth satellites, lunar exploration satellites and deep space probes, said Hong Xiaoyu, head of the Shanghai Astronomical Observatory.

"We hope that the new radio telescope will go into operation earlier so that we can use it to observe the unmanned lunar probe Chang'e-2," said Wu Weiren, chief designer of the lunar orbiter project.

The telescope will be used for Very Long Baseline Interferometry, a type of astronomical interferometry used in radio astronomy, as it can collect accurate data and increase its angular resolution during astronomical observation.

China's VLBI system is made up of four telescopes in the cities of Shanghai, Beijing, Kunming, Urumqi, respectively, as well as a data center in Shanghai.

Radio telescopes differ from optical ones in that they use radio antennae to track and collect data from satellites and space probes. The first radio antenna used to identify astronomical radio sources was built by Karl Guthe Jansky, an engineer with Bell Telephone Laboratories, in the early 1930s.

Hot Topics

Editor's Picks
...
主站蜘蛛池模板: 开封市| 朔州市| 玉山县| 蓝田县| 兴山县| 新宾| 鹿邑县| 南投县| 靖宇县| 原阳县| 镇远县| 锡林郭勒盟| 井冈山市| 陆川县| 礼泉县| 灌阳县| 乡城县| 蒙自县| 宜良县| 庆云县| 郓城县| 新兴县| 阜南县| 汉川市| 义马市| 香港 | 琼海市| 湘西| 香格里拉县| 龙里县| 常山县| 枞阳县| 涡阳县| 会昌县| 丽水市| 永新县| 淮南市| 巧家县| 衡阳市| 德化县| 手机|