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| 地月第二拉格朗日点卫星激光测距技术研究 |
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何芸1, 刘祺1,2, 田伟2, 段会宗2, 叶贤基2, 范淑华2, 李语强3
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1.华中科技大学 物理学院, 武汉 430074;2.中山大学 物理与天文学院, 天琴引力物理研究中心, 珠海 510275;3.中国科学院 云南天文台, 昆明 650011
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| 摘要: |
| 介绍了月球/中继星激光测距的科学意义、研究状况和发展趋势；研究了地月第二拉格朗日点（L2点）纯反射式激光测距技术和任务设计，主要包含单体大孔径激光角锥反射器的设计与研制，以及基于云南天文台1.2 m望远镜的月球/中继星激光测距系统研究。研究结果表明：采用单脉冲能量3 J和10 ns脉宽脉冲激光器，预期系统能接收到的单脉冲回波光电子数约为0.74，单光子测距精度优于1 m。 |
| 关键词: 地月第二拉格朗日点 月球激光测距 激光反射器 |
| DOI：10.15982/j.issn.2095-7777.2017.02.005 |
| 分类号:P184.5 |
| 基金项目:国家自然科学基金应急管理项目和青年基金（11655001，11605065） |
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| Study on Laser Ranging for Satellite on the Second Lagrange Point of Earth-Moon System |
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He Yun1, Liu Qi1,2, Tian Wei2, Duan Huizong2, Yeh Hsienchi2, Fan Shuhua2, Li Yuqiang3
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1.School of Physics, Huazhong University of Science and Technology, Wuhan 430074, China;2.Tianqin Research Center for Gravitational Physics, School of Physics and Astronomy, Sun Yat-Sen University, Zhuhai 510275, China;3.Yunnan Observatory, Chinese Academy of Science, Kunming 650011, China
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| Abstract: |
| The background and scientific goals of lunar/relay-satellite laser ranging is introduced. The current status and development trends of laser ranging is presented. The mission design is discussed,mainly including the manufacture of a single 170-mm-aperture Corner-Cube Retroreflector(CCR)a the laser ranging system based on a 1.2-m telescope installed at the Kunming station of Yunnan Observatory. A pulse laser with pulse width of 10ns and pulse energy of 3 J is used. The received photon number of 0.74 is expected,and the ranging precision is better than 1 meter. |
| Key words: second Lagrange point of Earth-Moon lunar laser ranging laser retroreflector |