非视线成像和振动测量使用子校准一致传感器
Xin Huang1,2, Ruilin Ye1,2, Wenwen Li1,2,3
1<a href="https://ror.org/01jeedh73">Hefei National Research Center for Physical Sciences at the Microscale</a> and School of Physical Sciences, <a href="https://ror.org/04c4dkn09">University of Science and Technology of China</a>, Hefei 230026, China.
Physical review letters
|June 21, 2024
概括
本研究引入了一种使用频率的新连贯激光雷达方法,用于高分辨率非视线 (NLOS) 成像. 这一突破使得在具有挑战性的条件下精确的3D重建和传感成为可能.
科学领域:
- 光学和光子学 在光学和光子学.
- 光学传感传感器是什么?
- 利达尔技术 利达尔技术
背景情况:
- 非视线 (NLOS) 成像可重建不在直接视线中的物体.
- 目前的NLOS系统使用脉冲激光和飞行时间LIDAR,但在时间分辨率和频率检测方面存在局限性.
- 现有的方法难以处理复杂的场景和环境光线干扰.
研究的目的:
- 为高分辨率的NLOS成像,速度测量和振动测量提出并展示一个新的连贯方案.
- 克服脉冲飞行时间激光雷达在时间分辨率和频率检测方面的局限性.
- 为了使NLOS在具有挑战性的环境中进行探测,包括强的环境光.
主要方法:
- 开发一个连贯的频率调制连续波 (FMCW) 激光雷达系统.
- 使用光学频率子对FMCW系统进行校准.
- 该系统用于NLOS成像,定位,3D重建和振动测量的应用.
主要成果:
- 实现了亚皮秒时间分辨率,具有优异的信号噪声比.
- 启用了NLOS对复杂场景的成像,即使在强烈的环境光线下.
- 演示了亚毫米尺度NLOS定位和3D成像.
- 实现了NLOS振动计传感精度达到了十几赫兹.
结论:
- 拟议的校准连贯传感器显著提高了NLOS成像能力.
- 这种方法释放了连贯激光雷达在成像科学和光学传感领域广泛应用的潜力.
- 该系统在复杂的环境中提供高分辨率,精度和稳定性.
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