Atmospheric correction on CCD data of HJ-1 satellite and analysis of its effect[J]. Journal of Remote Sensing, 2011,15(4):709-721. DOI: 10.11834/jrs.20110147.
The radioactive transfer process in the surface-atmosphere-remote sensor can be simulated by the atmospheric radioactive transfer model MODTRAN 4
thus the top of the atmosphere (TOA) radiance with the corresponding atmospheric parameters can be acquired. Based on the look-up table (LUT) which is generated by simulation
the surface reflectance from CCD data of HJ-1 satellite can be retrieved. Then
the effect of atmospheric correction on CCD data of HJ-1 satellite is analyzed in terms of the spectral curves
comparison with MODIS surface reflectance products
and the normalized difference vegetation index(NDVI). The results show: (1) Atmospheric correction on CCD data of HJ-1 satellite can eliminate the "increase" effect of the atmosphere. (2) The refl ectance of vegetation and settlement place from atmospheric corrected CCD data of HJ-1 satellite is well consistent with those from MODIS surface reflectance data products
with less than 20% in error between these two surface features for the four bands of CCD data of HJ-1 satellite. (3) The difference of NDVI between vegetation and other objects after atmospheric correction has been increased
which indicates the atmospheric correction can highlight the vegetation information.