Study on inversion of atmospheric aerosol nonsphericity based on satellite and ground observations

Nie, Xin; Mao, Qianjun

doi:10.1016/j.atmosres.2022.106582

Cited by 3 publications

(2 citation statements)

References 35 publications

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“…where x is the scattering element scale factor x = 2πr/λ; the asterisk (*) is the complex conjugate; a n and b n are the Mie scattering coefficients; r is the scattering element particle radius, whose unit is µm; and λ represents the wavelength, measured in µm. The relationship between the particle size and concentration of the scattering element can be characterized as obeying a lognormal distribution [15]:…”

Section: Analytical Modeling Of Pulse Time Broadening After Laser Tra...mentioning

confidence: 99%

“…When n 1 > n 2 and sin θ 1 > n 2 /n 1 , the transmitted photon undergoes total reflection and the unit vector in the direction of the outgoing photon can be described by Equation (15). In this expression, S r1 represents the unit vector in the photon incidence direction and S n represents the unit vector in the direction normal to the photon incidence, satisfying…”

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confidence: 99%

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Numerical MCRT Simulation and Inter-Symbol Interference Analysis of Laser Multipath Transmission in Airborne Air-to-Air Channels

Wu,

Li,

Wang

et al. 2024

Photonics

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To address the issues of signal waveform distortion and inter-symbol interference, both of which lead to performance degradation in airborne laser communication due to multipath transmission in airborne air-to-air channels, theoretical analysis and Monte Carlo ray tracing (MCRT) simulation methods were employed. Based on airborne application conditions, this research conducted numerical simulations of the Gaussian beam multipath transmission in an air-to-air channel, with a focus on analyzing the impact of meteorological conditions, communication distance, transmitter power, and initial pulse width on the pulse time spreading characteristics of received optical signals. In addition, an analysis of these parameters’ impact on the inter-symbol interference (ISI) and bit error rate (BER) was conducted. The research findings can serve as a reference for the design of anti-interference techniques in airborne laser communication links.

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Section: Analytical Modeling Of Pulse Time Broadening After Laser Tra...mentioning

confidence: 99%

mentioning

confidence: 99%

Numerical MCRT Simulation and Inter-Symbol Interference Analysis of Laser Multipath Transmission in Airborne Air-to-Air Channels

Wu,

Li,

Wang

et al. 2024

Photonics

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Global horizontal irradiance prediction model for multi-site fusion under different aerosol types

Gao,

Huang,

Zhang

et al. 2024

Renewable Energy

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Towards future challenges in the measurement and modelling of night sky brightness

Barentine,

Wallner,

Kocifaj

2023

Monthly Notices of the Royal Astronomical Society

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In ground-based astronomy, the brightness of the night sky is the limiting factor that determines the efficacy of any particular telescope in terms of detecting faint objects. Proper measurement and monitoring of night sky brightness (NSB) is therefore key to protecting sites of astronomical observatories from light pollution and maximizing their scientific productivity. However, current data sources and modelling approaches exhibit practical shortcomings that significantly limit their utility. By considering the current situation in measuring light pollution, we identify opportunities for improvements. These include defaulting to spatially resolved sky brightness measurements; routinely incorporating spectral information and polarization; and collecting simultaneous meteorological data. Given the acute threat to astronomy posed by rapidly increasing NSB around the world, we argue that the time has come for the standardization of NSB measurement and monitoring methods and protocols.

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Study on inversion of atmospheric aerosol nonsphericity based on satellite and ground observations

Cited by 3 publications

References 35 publications

Numerical MCRT Simulation and Inter-Symbol Interference Analysis of Laser Multipath Transmission in Airborne Air-to-Air Channels

Numerical MCRT Simulation and Inter-Symbol Interference Analysis of Laser Multipath Transmission in Airborne Air-to-Air Channels

Global horizontal irradiance prediction model for multi-site fusion under different aerosol types

Towards future challenges in the measurement and modelling of night sky brightness

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