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- W4205157367 abstract "High-resolution nighttime light (NTL) satellite images are needed for monitoring human activities and socioeconomic dynamics at fine scales, but such NTL data is very limited. On 11th June 2021, China launched the Yangwang-1 (“Look Up 1”) satellite, which is a small optical space telescope that detects near-Earth asteroids, but its visible band sensor can also collect nighttime light images. It provides a new fine-scale NTL data source. This study assessed the quality and capability of Yangwang-1 NTL imagery for capturing artificial lights. The results show that Yangwang-1 has equivalent quality with the state of the art in the NTL remote sensing (e.g., VIIRS, Luojia-1) and some aspects are even better. Specifically, Yangwang-1 has a higher spatial resolution (40 meters at the nadir), high radiometric consistency with VIIRS (R2=0.83), higher sensitivity to low lights than Luojia-1, better image quality in the spatial domain (lower BRISQUE index than Luojia-1 and VIIRS by 32% and 61% respectively), and a 420-700 nm broad band that can better detect artificial light and is less influenced by the absorption of the atmosphere. Yangwang-1 NTL data can be applied to various fields, including urban mapping, road network extraction, disaster detection, monitoring light pollution, illegal fishing, fires, and human settlements and mapping associated energy infrastructures at fine scales." @default.
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- W4205157367 date "2021-01-01" @default.
- W4205157367 modified "2023-09-30" @default.
- W4205157367 title "Assessment of A New Fine-Resolution Nighttime Light Imagery from the Yangwang-1 (“Look Up 1”) Satellite" @default.
- W4205157367 doi "https://doi.org/10.1109/lgrs.2021.3139774" @default.
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