Forward/backward first-order statistics algorithm for the estimation of DOA in a multipath environment
Joon-il Song, Hansu Kim, Koeng-Mo Sung, Jun-Seok Lim · The Journal of the Acoustical Society of America · 1999
Many kinds of direction of arrival (DOA) estimation methods in the coherent environments have been studied for many decades. Most of them use spatial smoothing to tackle the coherent environments. An alternative method was proposed by Pillai which used first-order statistics on each sensor datum [S. U. Pillai, Array Signal Processing (Springer-Verlag, New York, 1989)]. The method handled the complex numbered input data with additional symmetric array so that it needed two times as many sensors as it needed in the case of the real numbered input data. In this paper a DOA estimation method using forward/backward first-order statistics is proposed which can handle the complex numbered input data without additional sensors. [Work supported by UARC.]