Synthetic Aperture Radar (SAR) is a type of radar technology used to create detailed images of the Earth's surface. It works by sending out microwave signals and measuring the time it takes for the signals to bounce back after hitting an object. By moving the radar system, it can simulate a larger antenna, which improves image resolution. SAR is commonly used in various applications, including earth observation, environmental monitoring, and military reconnaissance. Its ability to capture images in all weather conditions and during day or night makes it a valuable tool for mapping and analyzing landscapes, urban areas, and natural disasters.