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Proceedings Paper

Atmospheric correction for HY-1A CCD in Case 1 waters
Author(s): Ling Sun; Maohua Guo
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Paper Abstract

In this paper, 2 kinds of atmospheric correction (AC) algorithms are presented for HY-1A CCD in Case 1 waters based on radiative transfer (RT) simulation: algorithms using lookup tables (LUTs) and algorithms using neutral network (NN), and are evaluated and compared. The LUTs AC algorithms consist of 4 aerosol correction algorithms based on 2 kinds of aerosol lookup tables: τa↔γ LUTs and ρas↔ρA LUTs. When applied to simulated data, the algorithm based on the τa↔γ LUTs performs the best. The NN AC algorithms are also successfully applied to simulated data, and not sensitive to randomly added noise of ±5%. Compared with LUTs algorithms, the NN algorithms have the highest R2 and lowest RMSE, and have better interpolating ability among different aerosol models. Because of its high speed of data processing, the NN algorithm is another good choice for atmospheric correction in Case 1 waters.

Paper Details

Date Published: 9 June 2006
PDF: 12 pages
Proc. SPIE 6200, Remote Sensing of the Environment: 15th National Symposium on Remote Sensing of China, 620004 (9 June 2006); doi: 10.1117/12.681124
Show Author Affiliations
Ling Sun, National Satellite Meteorological Ctr. (China)
Maohua Guo, State Oceanic Administration (China)

Published in SPIE Proceedings Vol. 6200:
Remote Sensing of the Environment: 15th National Symposium on Remote Sensing of China
Qingxi Tong; Wei Gao; Huadong Guo, Editor(s)

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