An Active Electronically Scanned Array (AESA) is a type of radar system that uses multiple small antennas, or elements, to send and receive signals. Unlike traditional radar systems that mechanically rotate, AESA can electronically steer its beam in different directions without moving parts. This allows for faster scanning and improved tracking of multiple targets simultaneously. AESA technology is commonly used in military applications, such as in fighter jets like the F-35 Lightning II and naval vessels. Its advanced capabilities enhance situational awareness and target detection, making it a crucial component in modern defense systems.