Atmospheric Correction and Image Quality Assessment of WFV Camera in GaoFen-1 Satellite

Yanmin, 李妍敏 Li; Shuangbao, 舒双宝 Shu; Zhiwen, 李志文 Li; Zhiqiang, 陈志强 Chen; Jingjing, 陈晶晶 Chen

doi:10.3788/aos202040.2001004

Cited by 1 publication

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“…The remote sensing data are from the Gaofen-1 satellite. This satellite is equipped with panchromatic multispectral spectroradiometer (PMS) sensors and includes four multi-spectral channels of blue, green, red, and near-infrared, as well as one panchromatic channel [30]. The spatial resolution of its multi-spectral data is 8 m, with one scene covering 60 km × 60 km [31].…”

Section: Survey Region and Data Acquisitionmentioning

confidence: 99%

Remote Sensing Inversion of Typical Water Quality Parameters of a Complex River Network: A Case Study of Qidong’s Rivers

Zhu

Wen

et al. 2023

Sustainability

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The remote sensing inversion of the water quality parameters of a complex river network in the absence of historical ground data is a difficult problem in the field of remote sensing. In this paper, a sub-regional inversion method for typical water quality parameters is presented for a complex river network using Gaofen-1 satellite data. Qidong’s rivers were selected as the survey region, and different band combination models and datasets on different river sub-regions were used to perform the remote sensing inversion, which realized the inversion of the permanganate index (CODMn), ammonia nitrogen (NH3-N), total phosphorus (TP), and total nitrogen (TN) in the rivers. The results show that all the coefficients of determination (R^2) of the inversion models are larger than 0.5, indicating an increase of about 0.4 when compared with the inversion method of the whole region, indicating good relevance. Water quality data and satellite data collected at different times were used for validation, which showed good results. On the basis of the water quality inversion, the key polluted areas were extracted in combination with on-site surveys to find the pollution source in order to verify the results of the inversion. The sub-region inversion method proposed in this paper can be used for the remote sensing inversion of the water quality parameters of complex river networks in the absence of historical ground data.

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Section: Survey Region and Data Acquisitionmentioning

confidence: 99%