Near-ultraviolet to near-infrared band thresholds cloud detection algorithm for tansat-capi

doi:10.3390/rs13101906

CIOMP OpenIR

	Near-ultraviolet to near-infrared band thresholds cloud detection algorithm for tansat-capi
	N. Ding; J. Shao; C. Yan; J. Zhang; Y. Qiao; Y. Pan; J. Yuan; Y. Dong and B. Yu
	2021
发表期刊	Remote Sensing
ISSN	20724292
卷号	13 期号:10
摘要	Cloud and aerosol polarization imaging detector (CAPI) is one of the important payloads on the China Carbon Dioxide Observation Satellite (TANSAT), which can realize multispectral polarization detection and accurate on-orbit calibration. The main function of the instrument is to identify the interference of clouds and aerosols in the atmospheric detection path and to improve the retrieval accuracy of greenhouse gases. Therefore, it is of great significance to accurately identify the clouds in remote sensing images. However, in order to meet the requirement of lightweight design, CAPI is only equipped with channels in the near-ultraviolet to near-infrared bands. It is difficult to achieve effective cloud recognition using traditional visible light to thermal infrared band spectral threshold cloud detection algorithms. In order to solve the above problem, this paper innovatively proposes a cloud detection method based on different threshold tests from near ultraviolet to near infrared (NNDT). This algorithm first introduces the 0.38 m band and the ratio of 0.38 m band to 1.64 m band, to realize the separation of cloud pixels and clear sky pixels, which can take advantage of the obvious difference in radiation characteristics between clouds and ground objects in the near-ultraviolet band and the advantages of the band ratio in identifying clouds on the snow surface. The experimental results show that the cloud recognition hit rate (PODcloud) reaches 0.94 (ocean), 0.98 (vegetation), 0.99 (desert), and 0.86 (polar), which therefore achieve the application standard of CAPI data cloud detection The research shows that the NNDT algorithm replaces the demand for thermal infrared bands for cloud detection, gets rid of the dependence on the minimum surface reflectance database that is embodied in traditional cloud recognition algorithms, and lays the foundation for aerosol and CO2 parameter inversion. 2021 by the authors. Licensee MDPI, Basel, Switzerland.
DOI	10.3390/rs13101906
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收录类别	SCI ; EI
引用统计
文献类型	期刊论文
条目标识符	http://ir.ciomp.ac.cn/handle/181722/65450
专题	中国科学院长春光学精密机械与物理研究所
推荐引用方式 GB/T 7714	N. Ding,J. Shao,C. Yan,et al. Near-ultraviolet to near-infrared band thresholds cloud detection algorithm for tansat-capi[J]. Remote Sensing,2021,13(10).
APA	N. Ding.,J. Shao.,C. Yan.,J. Zhang.,Y. Qiao.,...&Y. Dong and B. Yu.(2021).Near-ultraviolet to near-infrared band thresholds cloud detection algorithm for tansat-capi.Remote Sensing,13(10).
MLA	N. Ding,et al."Near-ultraviolet to near-infrared band thresholds cloud detection algorithm for tansat-capi".Remote Sensing 13.10(2021).

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