Radar remote sensing is a method used to gather information about the Earth's surface and atmosphere using radar technology. It involves the use of radar systems to transmit pulses of electromagnetic energy towards the Earth's surface and record the reflections, or echoes, that bounce back. These echoes can provide valuable information about surface features, such as topography, vegetation, and water bodies, as well as atmospheric conditions. Radar remote sensing is commonly used in applications such as monitoring changes in land use, detecting natural disasters, and studying climate patterns.