Answer and Explanation:
A phased array can be referred to the array that is scanned electronically or an array of antenna creating a radio wave beam and is computer controlled and can be directed in different pathways without the movement of antennas.
When the beam created by phrased array is incident on an object, it is reflected and an echo that can be detected, returns to the antenna.
The object bearing is provided by the direction of return of the echo to the antenna and the distance of the object is indicated by the lag between the pulse transmission and its echo.