Electronically ear arrays operate by using phase shifts to control the timing of signals emitted from each antenna element. This allows rapid steering without mechanical movement. By adjusting the phase of the signals, the array can create a focused beam in different directions almost instantly, enabling rapid tracking and scanning of multiple targets.
An AESA (active electronic scanning array) works by incorporating individual transmitting and receiving modules for each antenna element.
This design allows independent signal control, providing greater flexibility in beam steering, target tracking and simultaneous multi-target engagement. AESA systems can also adapt their frequency and waveform to improve performance in various operational scenarios.
PESA (passive electronic digitization network) is generally considered less capable than EASA.
Although PESA offers some advantages in terms of simplicity and cost, it lacks the flexibility and performance improvements provided by AESA, particularly in modern and electronic combat situations.
The advantages of electronically steered progressive array antennas include rapid beam steering, the ability to track multiple targets simultaneously, and resistance to jamming.
These antennas are also capable of operating across multiple frequency bands and can adapt to changing conditions, making them suitable for a wide range of applications.
A Passive Electronic Scanning Array (PESA) operates by using a single transmitter that emits radar signals while multiple receiver elements detect reflections. The system electronically steers the radar beam by adjusting the phase of received signals, allowing rapid changes in the direction of observation without the need to physically move the antenna
