Results 31 to 40 of about 957,049 (196)

Optomechanical Design and Application of Solar-Skylight Spectroradiometer

Sensors, 2021
Using a solar radiometer is an effective approach for improving the remote sensing of solar irradiance distribution and atmospheric composition. Long-term development of a solar scanning radiometer enables frequent and reliable measurement of atmospheric
Zhaoyang Qi, Jianyu Li, Wenqing Xu, Wenyue Zhu, Fengying Sun, Yao Huang, Gang Xu, Congming Dai   +7 more
doaj   +1 more source

Lidar Measurements of Ozone in the Upper Troposphere – Lower Stratosphere at Siberian Lidar Station in Tomsk

EPJ Web of Conferences, 2016
The paper presents the results of DIAL measurements of the vertical ozone distribution at the Siberian lidar station. Sensing is performed according to the method of differential absorption and scattering at wavelength pair of 299/341 nm, which are ...
Romanovskii O. A., Dolgii S.I., Burlakov V. D., Nevzorov A.A., Nevzorov A. V.   +4 more
doaj   +1 more source

MIMO free-space optical communication employing subcarrier intensity modulation in atmospheric turbulence channels [PDF]

, 2009
In this paper, we analyse the error performance of transmitter/receiver array free-space optical (FSO) communication system employing binary phase shift keying (BPSK) subcarrier intensity modulation (SIM) in clear but turbulent atmospheric channel ...
Ghassemlooy, Zabih, Popoola, Wasiu Oyewole, Wasiu O. Popoola, Ahmadi, Vahid, Erich Leitgeb, Leitgeb, Erich, Vahid Ahmadi, Zabih Ghassemlooy   +7 more
core   +1 more source

Adaptive optics system for the observation of terrestrial point-like sources: Results and problems

, 2022
Paper 78280KThe development of a system intended as a demonstrator for improving the tracking of distant point-like sources through the correction of the atmospheric optical distortions is here reported.
Marchi, G.
core   +1 more source

Aerosol Light Absorption at 1064 nm: Pollution Sources, Meteorological Parameters and Gas Pollutants in Qingdao Coastal Area, China

Atmosphere, 2021
A two-month sampling campaign was carried out from 1 November to 30 December 2019, to investigate the light absorption of aerosols at coastal sites in Qingdao.
Jie Chen, Wenyue Zhu, Qiang Liu, Xianmei Qian, Xuebin Li, Jianjie Zheng, Tao Yang, Qiuyi Xu   +7 more
doaj   +1 more source

Fast and simple model for atmospheric radiative transfer [PDF]

, 2010
Radiative transfer models (RTMs) are of utmost importance for quantitative remote sensing, especially for compensating atmospheric perturbation. A persistent trade-off exists between approaches that prefer accuracy at the cost of computational complexity,
Schaepman, Michael E; https://orcid.org/, Seidel, F C, Kokhanowsky, A A, F. C. Seidel, Seidel, F.C., M. E. Schaepman, Schaepman, M.E., A. A. Kokhanovsky, Kokhanovsky, A.A.   +8 more
core   +2 more sources

Atmospheric turbulence degraded image restoration using a modified dilated convolutional network

IET Image Processing, 2022
Long‐distance imaging is generally blurry and warped due to the presence of atmospheric turbulence, which harms the performance of the photoelectric system.
Changdong Su, Xiaoqing Wu, Yiming Guo, Shitai Zhang, Zhiyuan Wang, Dongfeng Shi   +5 more
doaj   +1 more source

BER and outage probability of DPSK subcarrier intensity modulated free space optics in fully developed speckle. [PDF]

, 2009
In this paper a differential phase shift keying (DPSK) subcarrier intensity modulated (SIM) free space optical (FSO) link is considered in negative exponential atmospheric turbulence environment.
Ghassemlooy, Zabih, Popoola, Wasiu Oyewole, Popoola, Wasiu O., Leitgeb, Erich, Ghassemlooy , Zabih   +4 more
core   +1 more source

Development of Singular Points in a Beam Passed Phase Screen Simulating Atmospheric Turbulence and Precision of Such a Screen Approximation by Zernike Polynomials

Photonics, 2022
This article addresses two issues. Firstly, it was shown that if the initial phase of a Gaussian beam is specified by the sum of Zernike polynomials or by a screen simulating atmospheric turbulence, in the process of propagation, singular points appear ...
Feodor Kanev, Nailya Makenova, Igor Veretekhin   +2 more
doaj   +1 more source

Experimental study of bit error rate of free space optics communications in laboratory controlled turbulence [PDF]

, 2010
This paper reports experimental results for the performance of an free space optical (FSO) communication link employing different modulation schemes under the influence of the atmospheric scintillation.
Z. Ghassemlooy, E. Leitgeb, Adebanjo, Olusegun, O. Adebanjo, S. Ansari, S. Rajbhandari, Ghassemlooy, Zabih, Ansari, S., Leitgeb, Erich, Rajbhandari, Sujan, H. Le-Minh, Ijaz, Muhammad, M. Ijaz, Le Minh, Hoa   +13 more
core   +1 more source