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.

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

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)