chanelink logo
CHANELINK
English

Research on LiDAR at the University of Electronic Science and Technology of China, published in Nature

371
2024-06-22 09:49:06
See translation

The team from the School of Information and Communication Engineering at the University of Electronic Science and Technology of China has proposed for the first time a laser radar instrument based on the dispersion Fourier transform method, forming a new demodulation mechanism. This instrument breaks through the cross limitations of measurement speed, accuracy, and distance, and has unique advantages in the discovery of low, slow, and small targets such as drones. The relevant paper was published in Nature Communications.


Lidar, as a powerful tool, can draw spatial information in real-time with extremely high accuracy and is widely used in industrial manufacturing, remote sensing, airborne and vehicular tasks. In the past two decades, the rapid development of optical frequency combs has improved measurement accuracy to the level of quantum noise limitation. The research at the University of Electronic Science and Technology of China uses the dispersion Fourier transform method to analyze the data information of the phase-locked vernier double soliton laser comb. Through online pulse stretching, it achieves full spectrum interferometric measurement based on traditional time interferometry or pulse reconstruction methods to identify pulse delay. This results in an absolute distance measurement accuracy of 2.8 nanometers and a measurement distance of 1.7 kilometers. In addition, this method has the unique ability to completely eliminate dead zones, which is particularly beneficial for small object detection.

Source: OFweek

Related Recommendations

  • Zygo showcases 3D optical metrology instruments on Space Comm

    Zygo Corporation, a business unit of AMETEK, announced that it will be showcased at the D28 booth of the Space Comm Expo held in Farnborough, UK from March 6th to 7th this year.Space Comm showcases the end-to-end supply chain of products, services, and applications that provide information and technological development for commercial aerospace enterprises, governments, and defense organizations, p...

    2024-03-01
    See translation

  • This laser cleaning "dark horse" announces annual performance and shareholder information

    On April 15th local time, Laser Photonics, a developer of laser cleaning equipment and solutions, announced its financial results for the fourth quarter and the year ended December 31, 2023. The financial report shows that in the fourth quarter of 2023, its revenue was $800000, with reduced operating and net losses. Here are the specific data:In addition to the financial report, the company's CEO ...

    2024-04-16
    See translation

  • Laser surface treatment of Ti6Al4V alloy: finite element prediction of melt pool morphology and microstructure evolution

    Researchers from the University of Calabria, University of Salento, and LUM University in Italy have reported on the progress of finite element prediction research on laser surface treatment of Ti6Al4V alloy: melt pool morphology and microstructure evolution. The related research was published in The International Journal of Advanced Manufacturing Technology under the title "Laser surface treatmen...

    04-10
    See translation

  • Japan and Germany jointly develop ultra high speed laser material deposition technology

    Makino Machine Tool Company, headquartered in Tokyo, Japan, and Fraunhofer Institute for Laser Technology (ILT), headquartered in Aachen, Germany, have collaborated to combine ultra-high speed laser material deposition (EHLA) and near net shape additive manufacturing (EHLA3D) with a five axis CNC platform. The new system developed can efficiently produce, coat, or repair complex geometric shapes o...

    2024-10-25
    See translation

  • NASA will demonstrate laser communications from the space station

    NASA's ILLUMA-T payload communicates with the LCRD via laser signals.NASA uses the International Space Station, a spacecraft the size of a football field orbiting the Earth, to learn more about living and working in space. For more than 20 years, the space station has provided a unique platform for investigation and research in the fields of biology, technology, agriculture and more. It is home to...

    2023-09-02
    See translation