基于增益调制的激光成像准确度研究

屠志鹏; 李思宁; 张大勇; 陆威

doi:doi:10.3788/gzxb20164501.0110003

光子学报, 2016, 45 (1): 0110003, 网络出版: 2016-03-22

基于增益调制的激光成像准确度研究

The Accuracy Research on Gain Modulation Laser Imaging

论文大纲

屠志鹏 ^*李思宁张大勇陆威

作者单位

哈尔滨工业大学光电子技术研究所, 哈尔滨 150001

激光成像距离选通增益调制非线性增益距离准确度 Laser imaging Range gated Gain modulation Nonlinear gain Distance accuracy

摘要

微通道板电压与增益对数理论上呈线性关系, 为了更接近实际情况, 根据已知的微通道板电压与增益对数的函数关系选取一组线性数据点, 并在其基础上加一组随机数作为波动, 得到新的电压与增益对数的关系, 获得指数拟合公式, 用于还原目标的距离信息.对成像准确度进行理论分析, 结果表明成像准确度与系统信噪比和增益调制函数有关, 且信噪比越高, 距离准确度越高.测量了微通道板增益与电压的关系曲线, 在不同电压条件下照射同一距离同一目标得到回波图像, 利用不同电压下回波图像灰度值之比得到相对增益之比.分别在恒定增益和调制增益下, 对距离成像系统60m的目标进行成像, 利用增益曲线对所得的图像进行处理, 准确还原出目标的距离信息, 准确度达到分米量级.

Abstract

The relationship of the gain logarithm and voltage of microchannel plate is linear in theory. In order to be closer to the actual situation, according to the known function between the voltage and logarithmic gain of microchannel plate, a set of linear data points added random numbers were selected, and the new relationship of the voltage and logarithmic gain was obtained which can be used to restore the target distance information. The analysis results of imaging accuracy show that the imaging accuracy is related to the system’s signal noise ratio and gain modulation function, the higher signal noise ratio is, the higher the distance accuracy is. The relationship between the gain and the voltage of microchannel plate was measured. The echo images in different voltages conditions were obtained by illuminating the same target at the same distance, the gray value ratio of the echo images under different voltages was used to get the ratio of relative gain. Respectively under the condition of constant gain and modulation gain, the target which was 60 m far from the imaging system was imaged. By using the gain curve, the obtained images were processed and the distance information of target accurately was restored, the distance accuracy could reach decimeter magnitude.

参考文献

[1] ZHU Xiao-peng, LIU Ji-qiao, HE Yan, et al. Range gated imaging lidar at wavelength of 532 nm［J］. Infrared and Laser Engineering, 2012, 41(2): 358-362.竹孝鹏,刘继桥,贺岩,等. 532nm激光距离选通成像系统［J］. 红外与激光工程, 2012,41(2): 358-362.

[2] ANDERSEN J F, BUSCK J, IA H H. Long distance high accuracy 3-D laser radar and person identification［C］. SPIE, 2005: 5791: 9-16.

[3] KLASEN L, ANDERSSON P, LARSSONH, et al. Aided target recognition from 3-D laser radar data［C］. SPIE, 2004, 5412: 321-332.

[4] MASAHIRO K, KEIGO I, REI I, et al. Gain-modulated axi-vision camera (high speed high-accuracy depth-mapping camera)［J］. Optics Express, 2004, 12(3): 5336-5344.

[5] SU Xin, JIA Xiao-dong, L Hua, et al. Design of image process platform and research of imaging arithmetic［J］. Infrared and Laser Engineering, 2010, 39(s): 638-642苏鑫, 贾晓东, 吕华,等. 无扫描凝视成像系统图像处理平台设计及成像算法研究［J］.红外与激光工程, 2010,39(s): 638-642.

[6] ZHAO Yuan, XU Yuan-nan, JIN Chen-fei. Gain modulation of scanning laser radar ranging accuracy of theoretical analysis［J］. Infrared and Laser Engineering, 2009, 38(2): 313-317.赵远, 许元男, 靳辰飞, 等. 增益调制非扫描激光雷达测距准确度的理论分析［J］. 红外与激光工程, 2009,38(2): 313-317.

[7] ZHANG Yong, CAO Xi-bin, WU Long, et al. Influence of linear gain modulation lidar system parameters on range accuracy［J］. Infrared and Laser Engineering, 2013, 42(4): 925-929.张勇, 曹喜滨, 吴龙, 等. 线性增益调制激光雷达系统参量对距准确度的影响［J］. 红外与激光工程, 2013, 42(4): 925-929.

[8] JIN Chen-fei, ZHAO Yuan, ZHANG Yong, et al. Experimental research on a scannerless 3D imaging laser radar［J］. Chinese Journal of Lasers, 2009, 36(6): 1383-1387.靳辰飞, 赵远, 张勇, 等. 一种无扫描三维成像激光雷达的实验研究［J］. 中国激光, 2009 (6): 1383-1387.

[9] HE Jiang. Theoretical and experimental research on gain modulating scannerless imaging ladar［D］. Harbin: Harbin institute of technology, 2007.何姜. 增益调制型无扫描成像激光雷达的原理与实验研究［D］. 哈尔滨: 哈尔滨工业大学, 2007.

[10] LI Si-ning, LIU Yan, ZHANG Fan-hui, et al. Simulation research of laser three-dimensional imaging system based on range gated technology［J］. Chinese Journal of Lasers, 2009, 36(s2): 331.李思宁, 刘妍, 张繁辉, 等. 距离选通激光三维成像系统的仿真研究［J］. 中国激光, 2009, 36(s2): 331.

[11] JIN Chen-fei, HU Peng, ZHANG Si-qi, et al. Analysis of weak signal processing of gain-modulated laser radarwith double thresholds［J］. Infrared and Laser Engineering, 2014, 43(8): 2447-2452.靳辰飞, 胡鹏, 张思琦,等. 增益调制激光雷达弱信号的双阈值处理分析［J］. 红外与激光工程, 2014,43(8): 2447-2452.

[12] YANG Shu-bin, PENG Fu-yuan. Design and experiment of an underwater laser imaging system［J］. Infrared and Laser Engineering, 2007,36(s2): 75-78.杨述斌, 彭复员. 水下激光成像系统设计及实验［J］. 红外与激光工程, 2007,36(s2): 75-78.

[13] LI Quan, LIU Ze-jin, SHU Bo-hong, et al. Schemedesign for range gated laser imaging system［J］. High Power Laser and Particle Beams, 2005, 17(1): 33-36.黎全, 刘泽金, 舒柏宏, 等. 主动成像系统距离选通实验方案设计［J］. 强激光与粒子束, 2005, 17(1): 33-36.

[14] YUAN Pu-sheng, LIU Qi. Non-scanning 3-D range-gated imaging lidar experimental system ［J］. Journalof Atmospheric and Environmental Optics, 2008, 3(2): 147-150.原蒲升, 刘琦. 无扫描 3-D 距离选通成像激光雷达实验系统［J］. 大气与环境光学学报, 2008, 3(2): 147-150.

[15] L Hua, SU Jian-zhong. Scannerless 4D imaging technology［J］. Infrared and Laser Engineering, 2007,36(s1): 470-473.吕华, 苏建忠. 无扫描四维激光成像技术研究［J］. 红外与激光工程, 2007,36(s1): 470-473.

[16] DAI De-de, SUN Hua-yan, HAN Yi, et al. Image quality assessment of laser active imaging system［J］. Laser＆ Infrared, 2009, 39(9): 986-990.戴得德, 孙华燕, 韩意, 等. 激光主动成像系统目标图像质量评价参量研究［J］. 激光与红外, 2009, 39(9): 986-990.

屠志鹏, 李思宁, 张大勇, 陆威. 基于增益调制的激光成像准确度研究[J]. 光子学报, 2016, 45(1): 0110003. TU Zhi-peng, LI Si-ning, ZHANG Da-yong, LU Wei. The Accuracy Research on Gain Modulation Laser Imaging[J]. ACTA PHOTONICA SINICA, 2016, 45(1): 0110003.

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