| CO2激光成像雷达距离分辨率测距精度的分析与实验研究 |
| |
| 引用本文： | 王春晖,成向阳,王骐,田兆硕,李琦.CO2激光成像雷达距离分辨率测距精度的分析与实验研究[J].光子学报,2003,32(10):1212-1215. |
| |
| 作者姓名： | 王春晖 成向阳 王骐 田兆硕 李琦 |
| |
| 作者单位： | 哈尔滨工业大学光电子技术研究所,可调谐激光技术国家级重点实验室,哈尔滨,150006 |
| |
| 摘 要： | 分析了脉冲外差体制CO2激光成像雷达系统的目标距离分辨率、测距精度和误差的主要来源.对于单个光脉冲测距来讲,信噪比(SNR)起伏引起的探测误差、脉冲前沿触发等概率分布以及脉冲建立时间的随机性等是激光脉冲外差测距的主要随机误差,其它随机误差在数量级上可忽略不计.同时利用现有的CO2激光脉冲外差探测系统,进行了远目标测距对比实验,观测到了2355 m目标脉冲回波信号,并精确测量出CO2光脉冲飞行的往返时间,该实验数据可用做系统误差的校正和补偿.
|
| 关 键 词： | 激光雷达 外差探测 激光测距 |
| 收稿时间： | 2002/12/11 |
| 修稿时间： | 2002年12月11 |
Analysis and Experiment of the Distance Resolving Power and Measure Accuracy of the CO2 Imaging Lidar |
| |
| Wang Chunhui,Cheng Xiangyang,Wang Qi,Tian Zhaoshuo,Li Qi National key Laboratory of Tunable laser Technology Harbin Institute of Technology P.O.,Harbin ,China.Analysis and Experiment of the Distance Resolving Power and Measure Accuracy of the CO2 Imaging Lidar[J].Acta Photonica Sinica,2003,32(10):1212-1215. |
| |
| Authors: | Wang Chunhui Cheng Xiangyang Wang Qi Tian Zhaoshuo Li Qi National key Laboratory of Tunable laser Technology Harbin Institute of Technology PO Harbin China |
| |
| Institution: | Wang Chunhui,Cheng Xiangyang,Wang Qi,Tian Zhaoshuo,Li Qi National key Laboratory of Tunable laser Technology Harbin Institute of Technology P.O.309,Harbin 150006,China |
| |
| Abstract: | The distance resolving power and measure accuracy and the main error source of a CO 2 pulse-heterodyne detecting system are analyzed. For ranging with single pulse of the heterodyne signal, the main random errors derive from fluctuation of SNR (signal noise ratio) and instability of trigger front and pulse generating time while the other errors can be ignored. Using the existing CO 2 pulse heterodyne detecting system,the contrastive experiment of ranging the targets far away is carried out,pulse echo signal from target 2355 meters away is observed,the cruise time of laser pulse is measured accurately. The experiment data can be used to proofread and compensate the systematic error. |
| |
| Keywords: | Lidar Heterodyne detecting Laser ranging |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
| 点击此处可从《光子学报》浏览原始摘要信息 |
| 点击此处可从《光子学报》下载免费的PDF全文 |
|
