Evaluation on consistency between HJ-1 CCD and TM images in monitoring fractional green vegetation cover

摘要

The fractional green vegetation cover (Fc) is an important climate model parameter. Remote sensing technique has become one of the most effective means to acquire vegetation dynamics information. The CCD cameras onboard HJ-1 satellites (Environment and Disaster monitoring and forecasting Satellite constellation) are advanced in revisit frequency and image coverage compared with Landsat TM. This study aims to assess the capability of HJ-1 CCD images in monitoring of Fc in terms of comparing with the widely used TM images. The quality of HJ-1 CCD is compared with the same temporal TM image in two aspects: the image statistical analysis and the image application analysis. After the comparison between the HJ-1 CCD image and TM image of the same area. The results show a high level of uniform between HJ-1 and TM images. Therefore, the conclusion may be drawn that the HJ-1 CCD image is feasible and suitable for Fc monitoring.