China satellite survey&control extends to moon |
文章来源： 文章作者： 发布时间：2006-12-15 02:04 字体： [ 大 中 小] 进入论坛 |
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Chinanews, Xi'an, Dec. 14 - Reporters learned from the Xi’an Satellite Observation and Control Center on Wednesday that the exact orbit calculation technology for moon-exploration spacecraft and the comprehensive technologies for tracking the USB-VLBI moon exploration orbit and its related experimental demonstration1 have recently passed experts’ appraisal2. The key technologies will enable China to extend its aerospace3 orbit observation and control from earth’s space to the moon.
Locating and controlling the satellite orbit is always considered as a key technology in aerospace observation and control. It is also an important criterion to judge a country’s aerospace observation and control capability4. In recent years, as aerospace technologies have made rapid progress in the world, many countries have increased the number of satellites they send to the space. Satellite models have also increase rapidly. As satellite movement is beginning to change from single satellite to satellite group, the orbits along which these satellites move are also beginning to progress from near-earth orbit and geosynchronous orbit around the earth to deep-space orbits such as the moon and other planets.
The development trend is placing a higher and higher requirement for the orbit calculation and control technology. The Xi’an Satellite Observation and Control Center has successfully designed the orbit observation methods and related softwares for locating the tracks around the moon. With this technology, scientists can pinpoint5 and control the location of the orbits in deep space. The accuracy of the orbit location calculated with this technology has reached international advanced level.
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1
demonstration
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| n.表明，示范，论证，示威 |
参考例句： |
- His new book is a demonstration of his patriotism.他写的新书是他的爱国精神的证明。
- He gave a demonstration of the new technique then and there.他当场表演了这种新的操作方法。
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2
appraisal
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| n.对…作出的评价；评价，鉴定，评估 |
参考例句： |
- What's your appraisal of the situation?你对局势是如何评估的？
- We need to make a proper appraisal of his work.对于他的工作我们需要做出适当的评价。
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3
aerospace
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| adj.航空的，宇宙航行的 |
参考例句： |
- The world's entire aerospace industry is feeling the chill winds of recession.全世界的航空航天工业都感受到了经济衰退的寒意。
- Edward Murphy was an aerospace engineer for the US Army.爱德华·墨菲是一名美军的航宇工程师。
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4
capability
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| n.能力；才能；(pl)可发展的能力或特性等 |
参考例句： |
- She has the capability to become a very fine actress.她有潜力成为杰出演员。
- Organizing a whole department is beyond his capability.组织整个部门是他能力以外的事。
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5
pinpoint
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| vt.准确地确定；用针标出…的精确位置 |
参考例句： |
- It is difficult to pinpoint when water problems of the modern age began.很难准确地指出，现代用水的问题是什么时候出现的。
- I could pinpoint his precise location on a map.我能在地图上指明他的准确位置。
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