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题名	1.2m望远镜高效率高精度激光测距控制系统研究与实现
作者	李祝莲
学位类别	博士
答辩日期	2008
授予单位	中国科学院研究生院（云南天文台）
授予地点	北京
导师	熊耀恒
关键词	测距控制系统 事件计时器 现场可编程门阵列 距离门技术
其他题名	High-precision and High-efficiency SLR Control System Realization and Research for 1.2m Telescope
学位专业	天体测量与天体力学
中文摘要	为了提高测距精度和进行高轨卫星或月球激光测距，在1.2m望远镜激光测距系统发展远程和高精度的激光测距技术具有重要的现实意义。在国家自然科学基金的天文联合基金重点项目和中国科学院知识创新工程青年人才领域前沿项目专项基金的支持下，作者系统深入地研究了事件计时器设计原理和技术实现并在1.2m望远镜激光测距系统上首次实现了基于事件计时器的全新的高效率高精度控制系统。具体如下： 首先，系统地研究了事件计时器原理和实现方法，并采用数字延迟线法研制了OTL110P事件计时器，这是在国内激光测距界首次研制出的事件计时器。该测量仪器具有间隔测量和事件时刻测量两种工作模式。测试结果表明：其时间分辨率(resolution)为4ps，测时盲区(dead time)为1µs，标准偏差值优于50ps，系统误差小于11ps，可以测量的时间范围是24h。因此，性能满足远程和高重频测距，也同样适用于传统的卫星激光测距中，测量精度可达到亚cm量级。 其次，首次实现了OTL110P事件计时器在间隔测量工作模式下的1.2m望远镜共光路激光测距系统的全新测距控制系统。目前正在使用着的传统激光测距系统不能直接与事件计时器接口，需要设计新的接口和新的距离门控技术。本研究工作将控制电路、控制软件和观测应用程序都作了全新的研制，最终实现了OTL110P事件计时器在间隔测量工作模式下的测距控制系统。从逻辑分析仪观察新控制系统产生的控制信号，结果表明：控制信号严格按照1.2m望远镜共光路激光测距系统的时序要求产生，从而可大大提高测距效率。 最后，提出了一种高频率激光测距中距离门控产生的方法。在间隔测量工作模式下，OTL110P事件计时器还未真正发挥其优势，而且在1.2m望远镜激光测距系统中实现高重频测距系统是我们进行本文研究的后继目标，这需要研制新的距离门产生技术。通过该方法获得的距离门精度约在几十ns。 本研究工作在1.2m望远镜激光测距系统中首次实现了基于事件计时器的高效率高精度控制系统，为将来在该测距系统中实现高重频测距技术做了充分的技术准备。
英文摘要	In order to improve ranging accuracy and make high-orbit satellites or lunar laser ranging, in the 1.2 m telescope laser ranging system to develop long-range and high precision laser ranging technology has important practical significance. Under the support of the National Natural Sciences Foundation important project of astronomy and the Chinese Academy of Sciences Fund for the knowledge innovation project young talents areas forefront project special funds, the author systematically and deeply researched Event Timer (ET) design principle and technology realization and in the 1.2m telescope laser ranging system firstly realized high efficiency and high accuracy control system based on ET. As follows: Firstly, systematically studied ET principle and realization method and researched and made OTL110P ET，which is first made in the domestic laser ranging field. This instrument has two kinds of work mode, time interval measurement and event epoch measurement. Test results show that: its time resolution is 4ps，dead time is , standard deviation is better than 50ps，system error is less than 11ps，measuring range is 24h. Therefore, its capability meets to long-range and high-repetition laser ranging, is also applicable to the traditional satellite laser ranging (SLR)，measurement accuracy up to sub-cm order. Secondly, the first time realized a new ranging control system for 1.2m telescope common optical road laser ranging system when OTL110P ET is set to time interval measurement work mode. The traditional laser ranging system that is currently using could not interface directly with ET, need to design a new interface and new range gate technology. This study have made a new development to control circuits, software and observing application interface, and finally realized the ranging control system when OTL110P ET’s work mode is time interval measure. Observing the control signals of the new control system using a logical analysis, the results show that: the control signals in strict accordance with the 1.2m telescope common optical road laser ranging system timing requirements generated, thus greatly improving the ranging accuracy. Finally, proposed a ranging gate generated method in high-repetition laser ranging. Under the time interval measurement work mode, OTL110P ET has not really played its strengths, but also in the 1.2m telescope laser ranging system realization high-frequency ranging system is the follow-up goal of this study, this required to develop a new ranging gate generated technology. Ranging gate generated through above method has about dozens ns precision. This research in the 1.2m telescope laser ranging system first realized high-precision and high-efficiency control system which is based on ET, for future to realize high-repetition ranging technology in this ranging system did a full technical preparation.
语种	中文
学科主题	天文学
页码	95
内容类型	学位论文
源URL	[http://ir.ynao.ac.cn/handle/114a53/7348]
专题	云南天文台_应用天文研究组
推荐引用方式 GB/T 7714	李祝莲. 1.2m望远镜高效率高精度激光测距控制系统研究与实现[D]. 北京. 中国科学院研究生院（云南天文台）. 2008.

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