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相关概念视频

Electronic Distance Measuring Instruments01:30

Electronic Distance Measuring Instruments

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Electronic Distance Measuring Instruments (EDMs) are essential tools in modern surveying, offering precise distance measurements by emitting electromagnetic signals and calculating the time required for these signals to travel to a target and return. Two primary types of signals are used in EDMs — light waves and microwaves — each suited to specific environmental and distance requirements. Light-wave-based EDMs utilize either infrared or laser light, providing high accuracy over...
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相关实验视频

Updated: May 2, 2026

Lensfree On-chip Tomographic Microscopy Employing Multi-angle Illumination and Pixel Super-resolution
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基于微电机系统的大规模光学LiDAR

Xiaosheng Zhang1, Kyungmok Kwon1, Johannes Henriksson1

  • 1Department of Electrical Engineering and Computer Sciences, University of California, Berkeley, Berkeley, CA, USA.

Nature
|March 10, 2022
PubMed
概括

本研究使用焦平面开关阵列 (FPSA) 进行高分辨率3D成像的16384像素固态LiDAR. 这种进步有望为自动驾驶系统和移动设备提供紧,高性能的传感器.

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相关实验视频

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科学领域:

  • 光学和传感器技术
  • 机器感知与机器人

背景情况:

  • 三维 (3D) 图像传感器对于机器感知至关重要,但目前的光检测和测距 (LiDAR) 设备通常受到机械扫描仪的限制.
  • 现有的基于焦平面阵列的3D传感器提供了固态优势,但其分辨率较低,通常为512像素或更低.

研究的目的:

  • 开发一个高分辨率的固态激光雷达传感器,具有广的视野和精确的定位能力.
  • 展示一个集焦平面开关阵列 (FPSA) 的单体光子芯片的可行性,用于先进的3D成像.

主要方法:

  • 在光子芯片上开发128x128元焦平面开关阵列 (FPSA),集成网格天线和MEMS驱动的光学开关.
  • 用于3D成像的128x96线束子射线的实验测试.
  • 使用频率调制连续波 (FMCW) 在单静态配置进行距离测量.

主要成果:

  • 实现了16384像素的LiDAR,视野为70°x70°,定位分辨率为0.6°x0.6°.
  • 显示了0.050°x0.049°的狭窄光束分歧和MHz以下的随机访问光束定位.
  • 在3D成像中达到1.7厘米的距离分辨率.

结论:

  • 开发的FPSA技术可以实现高分辨率的固态激光雷达,具有卓越的性能指标.
  • 在光子芯片上的单体集成和通过CMOS造厂的大规模生产的潜力为无处不在的3D传感铺平了道路.
  • 这项技术将对自动驾驶汽车,无人机,机器人和智能手机产生重大影响.