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首页> 外文期刊>Optical engineering >Vehicle-mounted validations of a 1.55-μm all-fiber continuous-wave coherent laser radar for measuring aircraft airspeed
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Vehicle-mounted validations of a 1.55-μm all-fiber continuous-wave coherent laser radar for measuring aircraft airspeed

机译:用于测量飞机空速的1.55μm全光纤连续波相干激光雷达的车载验证

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摘要

The lidar velocimetry is an airspeed sensor for the application of the lidar remote sensing technology to airborne air data systems. This study discusses a 1.55-μm all-fiber continuous-wave coherent laser radar (CLR) system, with a balanced photodetector as receiving frequency discriminators, developed by the Ocean Remote Sensing Laboratory, Ocean University of China. The system exhibits advantages including a compact structure, light weight, and high precision. The coupling efficiency of light from free space to single-mode fiber is analyzed, and the optimal value of the relative aperture of the coupling lens is given (d/f = 0.2107). The expression of carrier-to-noise ratio is simulated based on the parameters of the components used in the system to obtain the optimum local oscillator power (0.724 mW). The presented result of the hard target experiment and vehicle-mounted experiment in August 2018 indicates that the correlation coefficient between the lidar measured value and actual speed value is better than 0.99, relative error is less than 2.6%, and standard deviation is less than 0.22 m/s. The aforementioned validation results indicate that the CLR system exhibits stable and reliable performance and the potential to measure aircraft airspeed.
机译:激光雷达测速仪是一种空速传感器,用于将激光雷达遥感技术应用于机载空气数据系统。这项研究讨论了由中国海洋大学海洋遥感实验室开发的,具有平衡光电探测器作为接收鉴频器的1.55μm全光纤连续波相干激光雷达(CLR)系统。该系统具有结构紧凑,重量轻和精度高的优点。分析了从自由空间到单模光纤的光的耦合效率,并给出了耦合透镜相对孔径的最佳值(d / f = 0.2107)。基于系统中使用的组件的参数来模拟载噪比的表达式,以获得最佳的本地振荡器功率(0.724 mW)。硬目标实验和车载实验在2018年8月的呈现结果表明,激光雷达测量值与实际速度值之间的相关系数优于0.99,相对误差小于2.6%,标准偏差小于0.22多发性硬化症。前述验证结果表明,CLR系统具有稳定可靠的性能,并且具有测量飞机空速的潜力。

著录项

  • 来源
    《Optical engineering》 |2019年第1期|014103.1-014103.9|共9页
  • 作者单位

    Ocean University of China, College of Information Science and Engineering, Qingdao, China;

    Ocean University of China, College of Information Science and Engineering, Qingdao, China,State Oceanic Administration, The First Institute of Oceanography, Qingdao, China;

    Ocean University of China, College of Information Science and Engineering, Qingdao, China;

    Ocean University of China, College of Information Science and Engineering, Qingdao, China;

    Ocean University of China, College of Information Science and Engineering, Qingdao, China;

    Ocean University of China, College of Information Science and Engineering, Qingdao, China;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    laser remote sensing; lidar; heterodyne coherent detection; optimum local-oscillator; vehicle-mounted;

    机译:激光遥感;激光雷达外差相干检测;最佳本地振荡器;车载式;

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