Results 41 to 50 of about 26,040 (249)

Fine Classification of UAV Urban Nighttime Light Images Based on Object-Oriented Approach

open access: yesSensors, 2023
Fine classification of urban nighttime lighting is a key prerequisite step for small-scale nighttime urban research. In order to fill the gap of high-resolution urban nighttime light image classification and recognition research, this paper is based on a
Daoquan Zhang   +3 more
doaj   +1 more source

Pacific Islands Pacific Observatory, Monitoring Economic Activity by Nighttime Light Data: Nighttime Lights - Application for the Pacific

open access: yes, 2023
This note provides a deep dive into the quality of nighttime lights (NTL) data for Pacific Island Countries (PICs). It explores their potential to generate and complement regional socio-economic statistics. NTL data has been widely used as a proxy of economic activity.
Chamorro, Andres   +2 more
openaire   +3 more sources

A Saturated Light Correction Method for DMSP-OLS Nighttime Stable Light Data by Remote and Social Sensing Data [PDF]

open access: yesIEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 2021
The defense meteorological satellite program- operational line-scan system nighttime stable light (NTL) data have been widely used to evaluate the intensity of human activities. However, the sensor's defects lead to the saturation phenomenon, which greatly limits the reliability of the research results based on NTL data.
Xiaolei Huang 0005   +3 more
openaire   +2 more sources

Can Nighttime Light Data Be Used to Estimate Electric Power Consumption? New Evidence from Causal-Effect Inference

open access: yesEnergies, 2019
Nighttime light data are often used to estimate some socioeconomic indicators, such as energy consumption, GDP, population, etc. However, whether there is a causal relationship between them needs further study.
Yongguang Zhu   +4 more
doaj   +1 more source

Sensitivity studies of nighttime top-of-atmosphere radiances from artificial light sources using a 3-D radiative transfer model for nighttime aerosol retrievals [PDF]

open access: yesAtmospheric Measurement Techniques, 2023
By accounting for surface-based light source emissions and top-of-atmosphere (TOA) downward lunar fluxes, we adapted the spherical harmonics discrete ordinate method (SHDOM) 3-dimensional (3-D) radiative transfer model (RTM) to simulate nighttime 3-D TOA
J. Zhang   +7 more
doaj   +1 more source

Enhanced Statistical Estimation of Air Temperature Incorporating Nighttime Light Data [PDF]

open access: yesRemote Sensing, 2016
Near surface air temperature (Ta) is one of the most critical variables in climatology, hydrology, epidemiology, and environmental health. In situ measurements are not efficient for characterizing spatially heterogeneous Ta, while remote sensing is a powerful tool to break this limitation. This study proposes a mapping framework for daily mean Ta using
Yunhao Chen   +3 more
openaire   +2 more sources

Planar Block Adjustment for China’s Land Regions with LuoJia1-01 Nighttime Light Imagery

open access: yesRemote Sensing, 2019
The Luojia1-01 satellite provides high-resolution, high-sensitivity nighttime light data at a resolution of 130 m. To effectively use the Luojia1-01 nighttime light data for global applications, the problems of relative and absolute positioning accuracy ...
Xin Li   +6 more
doaj   +1 more source

A Structure Identification Method for Urban Agglomeration Based on Nighttime Light Data and Railway Data

open access: yesRemote Sensing, 2022
The urban spatial structure is a key feature of the distribution of social and economic resources. The spatial structure of an urban agglomeration is an abstract relationship expression of urbanization. Urban agglomerations develop for multiple reasons, including urban planning and natural evolution.
Zhiwei Xie 0003   +7 more
openaire   +3 more sources

Developing Non-Negative Spatial Autoregressive Models for Better Exploring Relation Between Nighttime Light Images and Land Use Types

open access: yesRemote Sensing, 2020
Exploring the relationship between nighttime light and land use is of great significance to understanding human nighttime activities and studying socioeconomic phenomena.
Honghan Zheng   +3 more
doaj   +1 more source

Evaluation of LJ1-01 Nighttime Light Imagery for Estimating Monthly PM2.5 Concentration: A Comparison With NPP-VIIRS Nighttime Light Data

open access: yesIEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 2020
Air quality degradations caused by fine particulate matter (PM2.5) can lead to various health problems, and accurate PM2.5 data are critical for managing the environment and ensuring public health.
Guo Zhang, Yingrui Shi, Miaozhong Xu
doaj   +1 more source

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