Propagator Rooting Method Direction of Arrival Estimation Based on Real Data

• Main Authors: Tayem, Nizar, Hussain, Ahmed A, Veramareddy, Vinay Reddy, Soliman, Abdel-Hamid, Alghazo, Jaafar M.
• Format: Conference Proceeding
• Language: English
• Subjects: coherent sources; complexity; Direction-of-arrival estimation; DOA estimation; Eigenvalues and eigenfunctions; Estimation; Matrix decomposition; Military communication; propagator method Root-MUSIC; Real-time systems; real-valued data; Simulation
• ISSN: 2155-7586
• DOI: 10.1109/MILCOM52596.2021.9653081

In this paper, we present a novel and computationally efficient DOA estimation method that works equally well for both non-coherent and coherent sources. This method is based on applying the propagator method as a linear operator to the covariance matrix of the received data taken from a single snapshot of signals impinging on a uniform linear array. A Toeplitz Hermitian data matrix is constructed and transformed to a real-valued data matrix which significantly reduces computational complexity. The propagator method obviates the need to use either eigenvalue decomposition or singular value decomposition in calculating the DOA. Finally, the Root-MUSIC method is employed in conjunction with proposed method to estimate the angles of arrivals from the received signal. Simulation results demonstrate the efficacy of the proposed method.