: It is a known fact that there are three powerful sensing techniques to observe the activities on the earth surface. They are given as optical remote sensing, thermal remote sensing, and microwave remote sensing. There are some practical and theoretical differences between the sensors and their applications. The aim of the present review is to show how the microwave sensing is different from other sensing techniques by describing the properties of all the types of remote sensors and how these properties will benefit the scientists and researchers for going into the microwave remote sensing. This work also focusses the major applications of all the sensors and discusses the scope of various mechanisms like interferometry, polarization and issues in microwave remote sensing in the context of image interpretation.