项目名称: 基于1.06μm波长的空间目标激光测距技术研究及应用
项目编号: No.U1231107
项目类型: 联合基金项目
立项/批准年度: 2013
项目学科: 天文学、地球科学
项目作者: 孟文东
作者单位: 中国科学院上海天文台
项目金额: 52万元
中文摘要: 在空间碎片和行星际激光测距中,能够探测到的激光脉冲信号十分微弱,高功率激光发射非常重要。传统激光测距系统中,激光器将1.06μm激光倍频为532nm激光输出,受倍频器件技术的制约,很难提高发射功率。如果直接采用1.06μm进行激光测距,不但消除了倍频过程中的能量损失,还为激光器功率的提高留下了很大空间。本项目将开展基于1.06μm波长的空间合作目标激光测距关键技术研究,研究1.06μm波长的光路调节技术和激光光束监视技术,采用适用于激光测距的1.06μm光子探测器,建立我国首台1.06μm波长的激光测距系统,并进行地面和低轨合作目标测距实验。本研究将探索激光测距的新技术,为今后大能量空间碎片和行星际激光探测提供试验基础和技术支持。
中文关键词: 1.06μm;激光测距;激光准直;光束监视;单光子探测
英文摘要: In space debris and interplanetary objects laser ranging system, it’s very important to improve the laser power, since the detected laser pulse signal is very weak. The traditonal 532nm laser used in laser ranging system is converted from 1064nm wavelength which wastes more than half energy. This project will carry out the research of space object laser ranging technology based on 1.06μm wavelength by appropriate updating of the existing 532nm laser in Shanghai Observatory. The primary and secondary mirror together with the transmitting optical path will be re-coated. 1.06μm wavelength optical path adjustment technology and telescope transceiver system coaxial adjustment technology will be developed. By adopting 1.06μm photon detector, China’s first 1.06μm wavelength laser ranging system will be established. The ground and space cooperate object laser ranging will be carried out. This research will explore a new laser ranging technology, which would provide an experimental basis and technical support for the next space debris and interplanetary objects laser detection.
英文关键词: 1.06μm;satellite laser ranging;laser beam collimation;laser beam monitering;single photon detection