Atmospheric correction for HY-1A CCD in Case 1 waters

Ling Sun; Maohua Guo

doi:10.1117/12.681124

9 June 2006 Atmospheric correction for HY-1A CCD in Case 1 waters

Ling Sun, Maohua Guo

Proceedings Volume 6200, Remote Sensing of the Environment: 15th National Symposium on Remote Sensing of China; 620004 (2006) https://doi.org/10.1117/12.681124
Event: Remote Sensing of the Environment: 15th National Symposium on Remote Sensing of China, 2005, Guiyan City, China

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: τ_a↔γ LUTs and ρ_as↔ρ_A LUTs. When applied to simulated data, the algorithm based on the τ_a↔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.

Citation Download Citation

Ling Sun and Maohua Guo "Atmospheric correction for HY-1A CCD in Case 1 waters", Proc. SPIE 6200, Remote Sensing of the Environment: 15th National Symposium on Remote Sensing of China, 620004 (9 June 2006); https://doi.org/10.1117/12.681124

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