Introduction介紹

很久以前有一個關于雷達發(fā)生的有趣故事。 一個駐扎在偏遠村莊的雷達軍隊，一開始，小偷總是從軍隊偷走蔬菜。 所以指揮官告訴整個村民，，他知道有人總是從軍隊偷蔬菜，因為雷達可以檢測到一切，他希望這樣不會再發(fā)生。 漸漸地，這個村莊變得和諧，氣氛很好。 有一天，聯誼會主任b director了指揮官。 她告訴警官，今晚有一對新人會進入新娘的房間，但新娘因為無所不在的雷達而害羞。 雷達足以創(chuàng)造理解。 那么什么是雷達？ 雷達的功能是什么？ 也許我們很多人不能完全回答這個問題。
There was an interesting story about radar happened in long time ago. A radar army stationed in a remote village, and at the very start, the thief always stole vegetables from the army. So the commanding officer told the entire villager he knew someone always stole vegetables from the army because the radar can detect everything, and he hoped that nothing like this would happen again. Gradually, the village became harmonious and had a good atmosphere. One day, the sorority director met the commanding officer bashfully. She told the officer that there was a new couple would go into the bride’s room tonight, but the bride was shy because the omnipotent radar. Radar is enough to create understandings. So, what is radar? What is the function of radar? Maybe many of us cannot answer the question completely. 

Detailed Information about Detecting Laser Radar關于檢測激光雷達的詳細信息

Radar is an electronic equipment that using electromagnetic wave to find the objective and determine its special location. The detecting laser radar is invented to detect 30 km to 100 km distancing from the ground even higher upper atmosphere.
The atmosphere section is difficult to detect, because this atmosphere section is extremely pure and there is no aerosol. Detecting laser radar is the most effective measure to detect this atmosphere section. 
What is the principle of detecting laser radar? It is formed by three parts: launching laser, using optical telescope to receipt, and using echo signal to detect. The differences are that the energy of laser is stronger than ordinary radar and the sensitivity is higher than ordinary radar1．
The detecting laser radar is invented by Chinese Academy of Sciences, the Mathematical Sciences Institute in Wuhan city plays an important role in the invention, and the invention of detecting laser radar is our own patented technology absolutely. A model was firstly presented by a member of the Mathematical Sciences Institute. And a solution was gotten, which can represent density distribution by the data obtained from the detecting laser radar. So we can obtain accurate and reliable measurement data from the detecting laser radar. The solution is obtained from multiple experiments and discussions. There are many factors should be considered, just as amplitudes, the width of the detecting laser radar and different pulses2．These factors are very important for the design and improvement of the laser radar.
The international technology of laser radar also is very advanced. The international studies of radar have shown great growth in the last 20 years. The growth is multiple and various as it happened in many areas, such as aerospace science and technology and many kinds of researches. New technology and interconnection network promote the development of laser radar.

The Detecting Laser Radar’s Impact of China Aerospace Science檢測激光雷達對中國航天科學的影響

The development of China Aerospace Science is promising and potential in China, because the growth of electronic equipment is rapid and the research in Aerospace Science obtains a good progress. And many aerospace industries have gotten great benefits. The aerospace industries can get profit more than 100 000yuan every year. The investment in aerospace industries also gains great progress. It is predicted that the investment in aerospace industries will get more flourishing and prosperous after 2 years 3．
The invention of detecting laser radar has great impact on China Aerospace Science.
It is basic for the research of Chinese independent frequency system, and it also is fundamental for some high-precision researches, for example, the researches in space navigation.
It also has great impact on Chinese medical treatment cause. The electromagnetic wave of the detecting laser radar promotes the development of nuclear magnetic resonance spectrometer. It starts industrialization of the spectrometer, and the spectrometer contributes to the research of serious lung diseases 4.
At present, China faces severe challenges in aerospace science, even though we have obtained significant successes. The limitation in technologies and researches is a big obstacle for the development of China Aerospace Science.

The measures that we should take to develop China Aerospace Science我們應該采取的措施來發(fā)展中國航天科學

There is a great distance between Chinese and international aerospace science. America and Britain have more advanced technology than ours, and they have longer history of aerospace research than us. 
What should we do to improve China Aerospace Science? There are some suggestions. First, the tightness between aerospace and network should be strengthened, because network plays an important role in aerospace. Secondly, exchanges in science and technology with other countries should be expanded. Lastly, accuracy should be improved to avoid the unnecessary disturbances5.

Conclusion 總結

The invention of detecting laser radar is a significant success for China Aerospace Science, and it has a great impact on the development of China Aerospace Technology and other areas. However, we should realize that we are facing many challenges in the development of China Aerospace Science. And we should take measures to eliminate these obstacles and make more progresses for China Aerospace Science.

References文獻

1. Lai Jiancheng, Jiang Haijiao, Yan Wei, Wang Chunyong, Li Zhenhua. November 2013. ‘Range uncertainty distribution of direct-detection laser radar with a peak-detecting routine’. Volume 124, Issue 21, November 2013, Pages 5202–5205.
2. Jiang Haijiao, Lai Jiancheng, Yan Wei,Wang Chunyong, Li Zhenhua. February 2013. ‘Theoretical distribution of range data obtained by laser radar and its applications’. Volume 45, February 2013, Pages 278–284.
3. W.K. Hocking. June 2011. ‘A review of Mesosphere–Stratosphere–Troposphere (MST) radar developments and studies, circa 1997–2008’. Volume 73, Issue 9, June 2011, Pages 848–882
4. Luo Guo Zhen, Liu Run Ze. 15 March 2000. ‘Non-aerospace application of Ti materials with a great many social and economic benefits in China’. Volume 280, Issue 1, 15 March 2000, Pages 25–29
5. Xue Yali. August 2008. ‘Trajectory Linearization Control of An Aerospace Vehicle Based on RBF Neural Network’. Volume 19, Issue 4, August 2008, Pages 799–805.

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