MUSIC Algorithm for Direction of Arrival (DOA) in Acoustic Signals

1. What is DOA algorithm?
2. What is DOA in music?
3. What is root music algorithm?

What is DOA algorithm?

Direction-of-arrival (DOA) estimation refers to the process of retrieving the direction information of several electromagnetic waves/sources from the outputs of a number of receiving antennas that form a sensor array.

What is DOA in music?

DOA is for the direction of array antenna of the radio wave. If the radio wave received meets the condition of far field narrowband, it can take the front of the radio wave as a plane. The angle between the array normal and the direction vector of the plane wave is the Direction of arrival (DOA).

What is root music algorithm?

Root-MUSIC algorithm is a polynomial form of MUSIC algorithm[7, 8]. This algorithm adopts the roots of a polynomial to replace the search for spatial spectrum in MUSIC algorithm, reducing the calculation amount and improving estimation performance. Nevertheless, it is mainly applied to acoustic pressure sensor array.