Synthetic Aperture Radar Theory

Synthetic Aperture Radar (SAR) is a remote sensing technology that uses radar signals to create detailed images of the Earth's surface. It involves a moving antenna, often on a satellite or aircraft, that sends out radio waves and records the echoes reflected from the ground. By processing these signals over time, SAR simulates a much larger antenna, or "aperture," enabling it to produce high-resolution images regardless of weather or daylight conditions. This technique allows for precise mapping, surveillance, and environmental monitoring from space or air.