chanelink logo
CHANELINK
Ελληνικά

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

121
2024-06-22 09:49:06
Δείτε τη μετάφραση

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

Σχετικές προτάσεις

  • Shanghai Optics and Machinery Institute has made new progress in the research of high repetition frequency and high energy medium wave infrared lasers

    Recently, the research team of Aerospace Laser Technology and System Department of Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, based on 2.1 μ M Ho: YAG main oscillator amplifier pumped ZGP crystal, achieving high energy 3-5 at kHz repetition frequency μ The output of M medium wave infrared laser and further research on beam quality improvement technology for high-...

    2024-05-22
    Δείτε τη μετάφραση

  • Scientists develop flat-topped laser beams to overcome Gaussian distribution limitations

    The beam emitted by almost all laser systems follows the Angle pattern of Gaussian distribution. The Gaussian irradiance distribution means that irradiance has a smooth peak at the center point and slowly declines toward the edge. In theory, the irradiance level of a Gaussian distribution can never reach zero, which means that the distribution can expand indefinitely. This phenomenon in the laser ...

    2023-08-04
    Δείτε τη μετάφραση

  • TSMC's first European wafer fab receives € 5 billion subsidy for construction

    Recently, TSMC held a groundbreaking ceremony for its first European 12 inch wafer fab. It is reported that the European Union has approved Germany to provide 5 billion euros in subsidies for the factory.It is understood that TSMC's 12 inch wafer fab is located in Dresden, Germany and is called "European Semiconductor Manufacturing Company (ESMC)". In August 2023, TSMC announced a partnership with...

    2024-08-26
    Δείτε τη μετάφραση

  • Redefining optical limits: Engineers discover enhanced nonlinear optical properties in 2D materials

    Recently, according to a paper published in Nature Communications titled "Phonoenhanced nonlinearities in hexagonal boron nitride," engineers from Columbia University collaborated with theoretical experts from the Max Planck Institute of Material Structure and Dynamics to discover that pairing lasers with lattice vibrations can improve the nonlinear optical properties of layered two-dimensional ma...

    2024-02-23
    Δείτε τη μετάφραση

  • GE Additive has been renamed Colibrium Additive, continuing to lead the additive manufacturing industry

    In April 2024, GE Additive was renamed Colibrium Additive. Colibrium Additive (formerly GE Additive) is a subsidiary of GE Aerospace Propulsion and Additive Technology (PAT) and was established at the end of 2016. Nowadays, it is a trusted partner and manufacturer of industrial metal 3D printers and metal powders, as well as a service provider for industrial metal 3D printers and metal powders. It...

    2024-04-30
    Δείτε τη μετάφραση