Phased array radars use an array of antennas to steer the direction of the radar beam electronically, without moving the antennas mechanically. This is achieved by adjusting the signal phase at each antenna element, allowing rapid changes in beam direction and improved target tracking.
Phased arrays are used in a variety of applications, including radar systems, telecommunications, and medical imaging.
They enable precise control of beam direction and shape, improving the performance of target detection, tracking, communication and imaging.
Progressive array radar and active electronic scanning array (AESA) differ mainly in technology and functionality. AESA is a type of phased array radar where each antenna element has its own transmitter and receiver module, allowing faster beam steering and improved reliability.
Traditional progressive array radars typically use a single transmitter and receiver for the entire array, limiting their speed and flexibility compared to AESA systems.
An array refers to a collection of antennas or sensors arranged in a specific pattern to achieve a desired functionality, such as improved signal strength or directionality. A phased array specifically refers to an array where the relative phase of the signal at each element is controlled to direct the beam electronically.
So although all phased arrays are arrays, not all arrays are phased arrays.
Progressive array radar and multiple-input multiple-output (MIMO) radar differ in their approach to signal processing and beamforming. Phased array radars direct a single beam to focus on a target, while MIMO radars use multiple transmitters and receivers to create multiple beams, providing better resolution and target detection capabilities. MIMO radars exploit spatial diversity to improve performance in cluttered environments and improve target identification