New wideband DOA estimation algorithm based on signal-subspace focusing method
Yiyu Zhou · Systems engineering and electronics · 2008
A new direction-of-arrival(DOA) estimation algorithm for wideband sources is introduced.The method is based on the eigenvalue decomposition of the cross correlation of every frequency in the signal bandwidth received by the antenna array.The focusing matrix is formed on the signal subspace of every frequency in the signal bandwidth.The optimum focusing signal subspace is derived.That the performance of the new method is the same as that of two-sided correlation transformation(TCT) algorithm is certified.Due to smaller dimension of the matrix used in the focusing matrix,the new method reduces the computational load compared with the TCT algorithm.Simulation results demonstrate the effectiveness of the new method.