Spectroscopy and Spectral Analysis, Volume. 34, Issue 3, 729(2014)
A Quickly Atmospheric Correction Method for HJ-1 CCD with Deep Blue Algorithm
In the present, for the characteristic of HJ-1 CCD camera, after receiving aerosol optical depth (AOD) from deep blue algorithm which was developed by Hsu et al. assisted by MODerate-resolution imaging spectroradiometer (MODIS) surface reflectance database, bidirectional reflectance distribution function (BRDF) correction with Kernel-Driven Model, and the calculation of viewing geometry with auxiliary data, a new atmospheric correction method of HJ-1 CCD was developed which can be used over vegetation, soil and so on. And, when the CCD data is processed to correct atmospheric influence, with look up table (LUT) and bilinear interpolation, atmospheric correction of HJ-1 CCD is completed quickly by grid calculation of atmospheric parameters and matrix operations of interface define language (IDL). The experiment over China North Plain on July 3rd, 2012 shows that by our method, the atmospheric influence was corrected well and quickly (one CCD image of 1 GB can be corrected in eight minutes), and the reflectance after correction over vegetation and soil was close to the spectrum of vegetation and soil. The comparison with MODIS reflectance product shows that for the advantage of high resolution, the corrected reflectance image of HJ-1 is finer than that of MODIS, and the correlation coefficient of the reflectance over typical surface is greater than 09. Error analysis shows that the recognition error of aerosol type leads to 005 absolute error of surface reflectance in near infrared band, which is larger than that in visual bands, and the 002 error of reflectance database leads to 001 absolute error of surface reflectance of atmospheric correction in green and red bands.
Get Citation
Copy Citation Text
WANG Zhong-ting, WANG Hong-mei, LI Qing, ZHAO Shao-hua, LI Shen-shen, CHEN Liang-fu. A Quickly Atmospheric Correction Method for HJ-1 CCD with Deep Blue Algorithm[J]. Spectroscopy and Spectral Analysis, 2014, 34(3): 729
Received: May. 23, 2013
Accepted: --
Published Online: Mar. 14, 2014
The Author Email: Zhong-ting WANG (wangzt@secmep.cn)