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논문 기본 정보

자료유형
학술저널
저자정보
Md Asrakul Haque (Department of Agricultural Machinery Engineering, Chungnam National University) Md Nasim Reza (Chungnam National University) Mohammod Ali (Chungnam National University) Md Rejaul Karim (Chungnam National University) Shahriar Ahmed (Chungnam National University) 이경도 (농촌진흥청 국립농업과학원) 강영호 (전라북도 농업기술원) Sun-Ok Chung (충남대학교)
저널정보
대한원격탐사학회 대한원격탐사학회지 대한원격탐사학회지 제40권 제4호
발행연도
2024.8
수록면
319 - 341 (23page)
DOI
https://doi.org/10.7780/kjrs.2024.40.4.1

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The utilization of multispectral imaging systems (MIS) in remote sensing has become crucialfor large-scale agricultural operations, particularly for diagnosing plant health, monitoring crop growth,and estimating plant phenotypic traits through vegetation indices (VIs). However, environmental factorscan significantly affect the accuracy of multispectral reflectance data, leading to potential errors in VIs andcrop status assessments. This paper reviewed the complex interactions between environmental conditionsand multispectral sensors emphasizing the importance of accounting for these factors to enhance thereliability of reflectance data in agricultural applications. An overview of the fundamentals of multispectralsensors and the operational principles behind vegetation index (VI) computation was reviewed. The reviewhighlights the impact of environmental conditions, particularly solar zenith angle (SZA), on reflectancedata quality. Higher SZA values increase cloud optical thickness and droplet concentration by 40–70%,affecting reflectance in the red (–0.01 to 0.02) and near-infrared (NIR) bands (–0.03 to 0.06), crucialfor VI accuracy. An SZA of 45° is optimal for data collection, while atmospheric conditions, such aswater vapor and aerosols, greatly influence reflectance data, affecting forest biomass estimates andagricultural assessments. During the COVID-19 lockdown, reduced atmospheric interference improvedthe accuracy of satellite image reflectance consistency. The NIR/Red edge ratio and water index emergedas the most stable indices, providing consistent measurements across different lighting conditions. Additionally, a simulated environment demonstrated that MIS surface reflectance can vary 10–20% withchanges in aerosol optical thickness, 15–30% with water vapor levels, and up to 25% in NIR reflectancedue to high wind speeds. Seasonal factors like temperature and humidity can cause up to a 15% change,highlighting the complexity of environmental impacts on remote sensing data. This review indicatedthe importance of precisely managing environmental factors to maintain the integrity of VIs calculations. Explaining the relationship between environmental variables and multispectral sensors offers valuableinsights for optimizing the accuracy and reliability of remote sensing data in various agriculturalapplications.

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