Identification of altered minerals in the Yingshan area of Aksu City, Xinjiang, based on the GF-5 hyperspectral data

Qingqing Hao; Weijun Chen; Zhaojian Zong; Zheng Zhang

doi:10.1117/12.3032188

3 June 2024 Identification of altered minerals in the Yingshan area of Aksu City, Xinjiang, based on the GF-5 hyperspectral data

Qingqing Hao, Weijun Chen, Zhaojian Zong, Zheng Zhang

Author Affiliations +

Proceedings Volume 13170, International Conference on Remote Sensing, Surveying, and Mapping (RSSM 2024); 131701N (2024) https://doi.org/10.1117/12.3032188
Event: Third International Conference on Remote Sensing, Surveying, and Mapping (RSSM 2024), 2024, Wuhan, China

Abstract

The GF-5 satellite has obtained nationwide hyperspectral images, which will play a dominant role in its widespread geological application. The GF-5 hyperspectral data is featured by integrated images and spectra, and can simultaneously obtain both the location and types of surface altered minerals. This work identified altered minerals and conducted geological application based on GF-5 hyperspectral data in the Yingshan area of Aksu City, Xinjiang. Through radiometric calibration and atmospheric correction of the hyperspectral data, the image reference endmember spectra were acquired. An improved spectral angle mapping method was employed to map altered minerals, and three types of altered minerals limonite, calcite, and dolomite were extracted. Based on previous geological data, this work analyzed the distribution of altered minerals, and determined the relationship between altered minerals and formation lithology. As a result, inaccurate geological boundaries were discovered in previous geological maps. It is inferred that the GF-5 hyperspectral data can effectively extract altered minerals, and is of great significance in stratigraphic division, lithology boundary delineation, and non-metallic mineral resource prediction.

(2024) Published by SPIE. Downloading of the abstract is permitted for personal use only.

Citation Download Citation

Qingqing Hao, Weijun Chen, Zhaojian Zong, and Zheng Zhang "Identification of altered minerals in the Yingshan area of Aksu City, Xinjiang, based on the GF-5 hyperspectral data", Proc. SPIE 13170, International Conference on Remote Sensing, Surveying, and Mapping (RSSM 2024), 131701N (3 June 2024); https://doi.org/10.1117/12.3032188

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KEYWORDS

Minerals

Calcite

Absorption

Remote sensing

Satellites

Radiometric calibration

Hyperspectral sensing

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