Which scan type is produced by phased array RADAR and is characterized by a lack of identifiable characteristics?

The scan type produced by phased array RADAR that is characterized by a lack of identifiable characteristics is the agile beam type. Phased array RADAR systems utilize multiple antennas that can change the direction of the beam quickly and accurately by adjusting the phase of the signal emitted from each antenna element. This ability allows them to create an agile beam, which can move to different angles without physically moving the antenna structure.

Agile beams do not have fixed patterns or identifiable characteristics because they can adapt their shape and direction based on the input signals and the requirements of the tracking or detection mission. This adaptability makes them suitable for dynamic environments where threats may emerge from various directions, enhancing situational awareness and target tracking capabilities.

In contrast, other scan types, such as conical, uni-directional, or steady, have more recognizable patterns or characteristics, as they tend to be slower or fixed in their scanning methodologies, making them less flexible in responding to rapidly changing situations.