Results 11 to 20 of about 61,361 (287)

Integrated Encapsulation and Implementation of a Linear-Mode APD Detector for Single-Pixel Imaging Lidar

open access: yesPhotonics, 2023
Single-pixel imaging lidar is a novel technology that leverages single-pixel detectors without spatial resolution and spatial light modulators to capture images by reconstruction. This technique has potential imaging capability in non-visible wavelengths
Akang Lv   +6 more
doaj   +1 more source

The Characterization of Haze and Dust Processes Using MAX-DOAS in Beijing, China

open access: yesRemote Sensing, 2021
Haze and dust pollution have a significant impact on human production, life, and health. In order to understand the pollution process, the study of these two pollution characteristics is important. In this study, a one-year observation was carried out at
Hongmei Ren   +13 more
doaj   +1 more source

UAVC: A New Method for Correcting Lidar Overlap Factors Based on Unmanned Aerial Vehicle Vertical Detection

open access: yesApplied Sciences, 2021
A method to calibrate the overlap factor of Lidar is proposed, named unmanned aerial vehicle correction (UAVC), which uses unmanned aerial vehicles (UAVs) to detect the vertical distribution of particle concentrations. The conversion relationship between
Ming Zhao   +5 more
doaj   +1 more source

Unusual Enhancement of the Optical Depth on the Continental Shelf Depth Latitudinal Variation in the Stratospheric Polar Vortex

open access: yesRemote Sensing, 2023
The Antarctic ozone hole has attracted attention concerning global climate change. Breakthroughs regarding ozone observation methods and the formation principles of ozone holes have occurred.
Ziqiang Xu   +5 more
doaj   +1 more source

Estimation of the Precipitable Water and Water Vapor Fluxes in the Coastal and Inland Cities of China Using MAX-DOAS

open access: yesRemote Sensing, 2021
Water vapor transport affects regional precipitation and climate change. The measurement of precipitable water (PW) and water vapor flux (WVF) is of great importance for the study of precipitation and water vapor transport.
Hongmei Ren   +10 more
doaj   +1 more source

Study of the Cn2 Model through the New Dimensionless Temperature Structure Function near the Sea Surface in the South China Sea

open access: yesRemote Sensing, 2023
The refractive index structure constant Cn2 near the ocean surface is an important parameter for studying atmospheric optical turbulence over the ocean.
Feifei Wang   +5 more
doaj   +1 more source

Rare Earth Dopant (Nd, Gd, Dy, and Er) Hybridization in Lithium Tetraborate

open access: yesFrontiers in Physics, 2014
The four dopants (Nd, Gd, Dy, and Er) substitutionally occupy the Li+ sites in lithium tetraborate (Li2B4O7: RE) glasses as determined by analysis of the extended X-ray absorption fine structure. The dopants are coordinated by 6-8 oxygen at a distance of
Tony D. Kelly   +11 more
doaj   +1 more source

Influence of Image Processing Method on Wavefront Reconstruction Accuracy of Large-Aperture Laser

open access: yesPhotonics, 2023
In order to improve the wavefront reconstruction accuracy of a large-aperture laser, this paper proposed an adaptive window preprocessing algorithm based on the threshold center of gravity method (AW-TCoG).
Gangyu Wang   +5 more
doaj   +1 more source

Optical Turbulence Characteristics in the Upper Troposphere–Lower Stratosphere over the Lhasa within the Asian Summer Monsoon Anticyclone

open access: yesRemote Sensing, 2022
The high elevation, complex topography, and unique atmospheric circulations of the Tibetan Plateau (TP) make its optical turbulence characteristics different from those in low-elevation regions.
Kun Zhang   +5 more
doaj   +1 more source

Rapid and Sensitive Detection of Water Toxicity Based on Photosynthetic Inhibition Effect

open access: yesToxics, 2021
To achieve rapid and sensitive detection of the toxicity of pollutants in the aquatic environment, a photosynthetic inhibition method with microalgae as the test organism and photosynthetic fluorescence parameters as the test endpoint was proposed.
Min Chen   +7 more
doaj   +1 more source

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