The difference between AESA (active electronically scanned array) and PESA (passive electronically scanned array) lies in their architecture and performance. AESA radars have individual transmit and receive modules for each antenna element, allowing faster and more flexible beam steering. PESA radars use a single transmitter and receiver with phase shifts to direct the beam, which is generally slower and less versatile than AESA systems.
The difference between Rafale Pesa and Aesa Radar is mainly in their technological sophistication and capabilities. The Rafale initially used a PESA radar, which provided good performance but had limitations in speed and beam steering flexibility. The new AESA radar on the Rafale offers faster beam steering, greater reliability, improved target tracking and better resistance to electronic countermeasures.
The difference between Pulse Doppler and AESA lies in their operational principles and applications. Pulse Doppler radar uses the Doppler effect to measure the relative speed of targets, primarily focusing on distinguishing moving targets from stationary targets. AESA radar, in contrast, uses electronic beam steering with multiple transmit and receive modules, providing fast and flexible beam control, improved target tracking, and higher resolution.
AESA is used for advanced radar applications, including military radar systems, air traffic control, weather monitoring and communications systems. Its fast beam steering capabilities and enhanced tracking capabilities make it suitable for detecting and tracking multiple targets in various environments.
AESA radar is better because of its fast electronic beam steering, which allows for instant direction changes and improved target tracking. It provides higher reliability because each antenna element has its own transmitting and receiving module, reducing the impact of individual failures. AESA radar also provides improved resolution, target discrimination and resistance to electronic countermeasures, improving overall radar performance.