What is AESA Radar?

Wed, 12 Nov 2025 00:00:00 +0000

What is AESA radar? AESA radar is a radar that uses an active electronically scanned array to steer its beam very quickly without depending only on a mechanically rotating antenna.

That sounds technical, but the beginner version is simple. Instead of having one big transmitter feeding one moving antenna, an AESA radar uses many small transmit/receive elements across the face of the array. By changing the timing and phase of those elements, the radar can point energy in different directions electronically.

What is Phased Array Radar?

Mon, 28 Jul 2025 09:00:00 +0800

What is phased array radar? In simple terms, it is a radar that steers its beam electronically by controlling many antenna elements, rather than steering the beam mainly by rotating or tilting the whole antenna mechanically. That is the defining idea. The radar face can remain fixed, but the beam can still be pointed in different directions.

For beginners, this is the key contrast to remember. A conventional mechanically scanned radar usually points the beam by physically turning the antenna. A phased array radar points the beam by changing the relative phase of signals across an array of elements. NOAA’s phased array radar explanations describe this directly: the antenna remains stationary while the beam can be steered electronically left-to-right and up-and-down.

Beam Steering on Counter UAV Radar — Low-Altitude Surveillance Radar

What is AESA Radar?

What is Phased Array Radar?