相干激光测距中的多普勒频率动态补偿研究
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摘要
介绍了相干体制的激光雷达相较传统直接探测激光雷达的优点,阐述了在相干激光测距中进行光频率多普勒动态补偿的必要性,给出了进行频率补偿的系统模型和工作流程。文中基于1550 nm激光搭建了试验系统,通过搭建的实验平台对方案进行了验证。验证了在相干激光雷达中使用光频率补偿技术的可行性。
The advantage of coherent lidar compared with the traditional direct detection lidar are introduced,the necessity of Doppler frequency dynamic compensation in coherent range lidar is expounded,and the system model and the flow of work are given in the paper.The experimental system is built based on 1550 nm laser,and the scheme is verified by the experimental platform.The feasibility of using optical frequency compensation technique in coherent lidar is verified.
The advantage of coherent lidar compared with the traditional direct detection lidar are introduced,the necessity of Doppler frequency dynamic compensation in coherent range lidar is expounded,and the system model and the flow of work are given in the paper.The experimental system is built based on 1550 nm laser,and the scheme is verified by the experimental platform.The feasibility of using optical frequency compensation technique in coherent lidar is verified.
引文
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[5] LIU Changwen,HAN Jingna,LIU Jie,et al.Investigation on frequency correction methods and its application in digital spectrum LDA processor[J].Chinese Journal of Lasers,2003,30(7):642-646.(in Chinese)刘昌文,韩静娜,刘杰,等.激光多普勒测速中的频谱校正及其应用[J].中国激光,2003,30(7):642-646.
[6] Sui Xiaolin,All fiber coherent Doppler lidar for space craft safe landing[C]//2012 International conference on Optoelectronics and Microelectronics,2013.
[7] Sui Xiaolin.Optical frequency modulation continuous wave coherent laser radar for spacecraft safe landing vector velocity measurement[C]//The 2nd International Symposium on Laser Interaction with Matter,Xi′an,2012.
[8] Sui Xiaolin.Research on an all-fiber structure velocity measurement coherent lidar[J].Chinese Journal of Lasers,2013,40(12):198-202.(in Chinese)眭晓林.一种全光纤结构的相干激光测速雷达研究[J].中国激光,2013,40,(12):198-202.
[9] 沈熊.激光多普勒技术及其应用[M].北京:清华大学出版社,2004:78-91.
[2] D Becker,C Wree,D Mohr,et al.Optical Coherent Receivers foe 2.5 and 10 Gb/s[C]//Proceedings of the IEEE Avionics Fiber-Optics and Photonics Coherence,Minneapolis,MN,USA,2005:33-34.
[3] SUI Xiaolin,ZHOU Shouhuan,ZHAO Hong,et al.All fiber coherent detection system far target velocity measurement[J].Laser & Infrared,2013,43(3):256-257.(in Chinese)眭晓林,周寿桓,赵鸿,等,全光纤激光相干探测实现远距离目标测速[J],激光与红外,2013,43(3):256-257.
[4] LI Jiang,LIN Zhili,MA Jingjin.Nonlinear response characteristics of the optical frequency modulated lidar[J].Chinese Journal of Lasers,2012,39(s2):s214002.(in Chinese)李茳,林志立,马静谨.光学调频激光雷达的非线性响应特性[J].中国激光,2012,39(s2):s214002.
[5] LIU Changwen,HAN Jingna,LIU Jie,et al.Investigation on frequency correction methods and its application in digital spectrum LDA processor[J].Chinese Journal of Lasers,2003,30(7):642-646.(in Chinese)刘昌文,韩静娜,刘杰,等.激光多普勒测速中的频谱校正及其应用[J].中国激光,2003,30(7):642-646.
[6] Sui Xiaolin,All fiber coherent Doppler lidar for space craft safe landing[C]//2012 International conference on Optoelectronics and Microelectronics,2013.
[7] Sui Xiaolin.Optical frequency modulation continuous wave coherent laser radar for spacecraft safe landing vector velocity measurement[C]//The 2nd International Symposium on Laser Interaction with Matter,Xi′an,2012.
[8] Sui Xiaolin.Research on an all-fiber structure velocity measurement coherent lidar[J].Chinese Journal of Lasers,2013,40(12):198-202.(in Chinese)眭晓林.一种全光纤结构的相干激光测速雷达研究[J].中国激光,2013,40,(12):198-202.
[9] 沈熊.激光多普勒技术及其应用[M].北京:清华大学出版社,2004:78-91.