Review of Drought Monitoring Based on Remote Sensing Technology

In this paper, we reviewed and summarized the drought monitoring technology of satellite remote sensing in the fields of visible light, thermal infrared, microwave, hyperspectral, chlorophyll fluorescence, UAV, and multi-source remote sensing technology and big data mining; evaluated and discussed the various problems existing in remote sensing drought indices and models; indicated the main technical problems of satellite remote sensing drought monitoring and the future development opportunities, and put forward the main problems to be solved and the development direction in view of the current situation of China's satellite remote sensing drought application.