chanelink logo
CHANELINK
Français

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

124
2024-06-22 09:49:06
Voir la traduction

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

Recommandations associées

  • Scientists have demonstrated a new way to make infrared light from quantum dots, and the experiments are still in the early stages

    Scientists at the University of Chicago have demonstrated a way to create infrared light using colloidal quantum dots. The researchers say this approach shows great promise; Although the experiment is still in its early stages, these quantum dots are already as efficient as existing conventional methods.These points could one day form the basis of infrared lasers, as well as small and inexpensive ...

    2023-09-08
    Voir la traduction

  • Medium-long wavelength infrared quantum cascade laser of MOCVD on silicon

    Us researchers report 8.1 μm wavelength quantum cascade laser (QCL) grown on silicon (Si) by MOCVD [S. Xu et al., Applications. Physics Letters, v123, p031110, 2023]. "There are no previous reports of QCL growth on silicon substrates by metal-organic chemical vapor deposition (MOCVD)," commented the team from the University of Wisconsin-Madison, the University of Illinois at Urbana-Champaign an...

    2023-08-04
    Voir la traduction

  • The Stanford University team has manufactured the first practical chip grade titanium sapphire laser

    According to a report in Nature on June 26th, a team from Stanford University in the United States has developed a titanium sapphire laser on a chip. Whether in terms of scale efficiency or cost, this achievement is a huge progress. Image source: Nature websiteTitanium sapphire lasers are indispensable in many fields such as cutting-edge quantum optics, spectroscopy, and neuroscience, but they ...

    2024-07-01
    Voir la traduction

  • Aalyria plans to establish a laser link mesh network to quickly transmit data on land, in the air, in the ocean, and in space

    Aalyria is establishing a laser link mesh network to quickly transmit data on land, in the air, in the ocean, and in space. The maritime part of the plan is about to be pushed forward.Recently, this DC based laser communication network company announced the signing of a memorandum of understanding with HICO Investment Group, which focuses on investing in shipping and logistics companies. According...

    2023-10-26
    Voir la traduction

  • Nanchang University research progresses in acoustic resolution photoacoustic microimaging enhancement

    As a promising imaging modality that combines the high spatial resolution of optical imaging and the deep tissue penetration ability of ultrasound imaging, photoacoustic microscopy (PAM) has attracted a lot of attention in the field of biomedical research, and has a wide range of applications in many fields, such as tumor detection, dermatology, and vascular morphology assessment. Depending on the...

    2024-09-18
    Voir la traduction