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The future of lidar in planetary science

open access: yesFrontiers in Remote Sensing, 2022
Lidar has enabled advances in the knowledge of the Solar System through geophysical and atmospheric studies of the Moon, Mercury, Mars, and several asteroids.
Daniel R. Cremons
doaj   +1 more source

Investigations on photovoltaic material absorptivity using hyperspectral photoluminescence excitation imaging

open access: yesEPJ Photovoltaics, 2023
Photoluminescence imaging has become a standard method to characterize solar cells. However, performing some quantitative analysis of this technique requires the assumption of uniform local absorptivity, which cannot be directly measured using ...
Legrand Marie   +4 more
doaj   +1 more source

An Analysis of the Influence of Cool Roof Thermal Parameters on Building Energy Consumption Based on Orthogonal Design

open access: yesBuildings, 2023
An analytical hierarchy model of the impact of solar reflectance, thermal emittance, heat transfer coefficient, and heat storage coefficient on building energy consumption was established through the implementation of orthogonal design experiments.
Shanguo Zhao   +2 more
doaj   +1 more source

Optoelectronic Instrumentation and Measurement Strategies for Optical Chemical (Bio)Sensing

open access: yesApplied Sciences, 2021
There is a growing interest in the development of sensitive, portable, and low-cost instrumentation for optical chemical (bio)sensing. Such instrumentation can allow real-time decision-making for industry, farmers, and researchers.
Francisco Ferrero Martín   +6 more
doaj   +1 more source

FTIR characteristics of charcoal with different combustion degrees as an indication of the genesis by and their significances for formation of fusinite in coal

open access: yesMeitan kexue jishu, 2023
Fourier transform infrared spectroscopy (FTIR), as a non-destructive method, is widely used for the identification of compounds and the characterization of molecular structures.
Xu GUO   +8 more
doaj   +1 more source

Sensor system for acquisition of vegetation indexes [PDF]

open access: yesRevista Brasileira de Engenharia Agrícola e Ambiental
Vegetation indexes are important indicators of the health and yield of agricultural crops. Among the sensors used to evaluate vegetation indexes, proximal sensors can be used for real-time decision-making. Thus, the objective of this study was to develop
Thales M. de A. Silva   +4 more
doaj   +2 more sources

ASDToolkit: A Novel MATLAB Processing Toolbox for ASD Field Spectroscopy Data

open access: yesData, 2020
Over the past 30 years, the use of field spectroscopy has risen in importance in remote sensing studies for the characterization of the surface reflectance of materials in situ within a broad range of applications.
Kathryn Elmer   +3 more
doaj   +1 more source

The near infrared reflective materials surfaces : dimensions and angles. [PDF]

open access: yesمجلة جامعة الانبار للعلوم الصرفة, 2009
The near infra-red signals reflected by different surfaces are studied. The transmitted signals are reflected by different surface obstacles for varied distances among the receiver, reflector and remote controller. The infra-red transmitter transmits the
Fisal.A. Al-Bassam
doaj   +1 more source

Using a field radiometer to estimate instantaneous sky clearness Radiômetro de campo para cálculo da clareza instantânea do céu

open access: yesRevista Brasileira de Engenharia Agrícola e Ambiental, 2006
Reflectance measurements of crop plants and canopies show promise for guiding within-season, variable-rate nitrogen (N) application. Most research results have been obtained around solar noon with clear skies.
Eduardo G. Souza   +3 more
doaj   +1 more source

Hyperspectral Classification of Cyperus esculentus Clones and Morphologically Similar Weeds

open access: yesSensors, 2020
Cyperus esculentus (yellow nutsedge) is one of the world’s worst weeds as it can cause great damage to crops and crop production. To eradicate C. esculentus, early detection is key—a challenging task as it is often confused with other Cyperaceae and ...
Marlies Lauwers   +4 more
doaj   +1 more source

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