FY-3A MERSI数据干旱监测能力评价

Estimation of Drought Monitoring Ability of FY-3A MERSI Data

对FY-3A MERSI数据进行辐射定标、几何定位预处理,与同期MODIS数据预处理结果进行对比;选用温度植被干旱指数法对两种数据进行监测,分析了监测结果的相对精度。实验结果表明,FY-3A MERSI数据的干旱监测结果精度与MODIS数据基本一致,且在空间分辨率及光谱分辨率方面有较大的提高。

The FY-3A satellite is an obit meteorological satellite which can provide the glob- alizational, three-dimensional, multi-spectral remote sensing images. One of the FY-3A mis- sions is monitoring the natural disaster and the change of environment all over the world. We analyze the ability of drought monitoring using the FY-3A MERSI data. First, the art of sta- tus of FY-3A satellite is introduced and the potential ability in drought monitoring is dis- cussed. Second, the FY-3A MERSI and MODIS data are preprocessed and analysed. Final- ly, the relativel precision between the results of FY-3A MERSI and MODIS data are ana- lyzed. The results of experiment indicate that the FY 3A MERSI data can improve the drought monitoring ability in same spatial and spectral resolution aspects.