A review on availability of remote sensing data

The satellite images are applied on a wide range of applications. It plays a vital role in monitoring and maintaining the environmental changes and also in many agricultural applications. Nowadays, the Land degradation, Ground water scarcity and other climatic hazards are intensively high and it needs development of more advanced prediction models. These models can be deployed more effectively on using satellite images. Due to the launch of many modern satellites the availability of satellite images are high but still the exploitation of these resources are very scarce. It is due to the lack of knowledge over varied properties and the availability of different sources of satellite images. Though the moderate resolution satellite images are freely available, the rate of exploitation of these resources is still very less. Hence, this paper focuses on detailing the diverse characteristics and availability of satellite images which could be a great help for beginners in remote sensing research. In addition the details on major satellite derived products which are applied widely in different mapping applications are also listed. Further, the importance of satellite images in few notable applications is also explained.