naa a22 4500 510793894 CHVBK 20180411083329.0 cr unu---uuuuu 180411e20130601xx s 000 0 eng 10.1007/s11277-012-0772-6 doi (NATIONALLICENCE)springer-10.1007/s11277-012-0772-6 Low-Complexity Estimation of DOA and Angular Spread for an Incoherently Distributed Source [Elektronische Daten] [Zhi Zheng, Guangjun Li] In this paper, a low-complexity method is proposed for the parametric estimation of an incoherently distributed (ID) source, using a uniform linear array. Based on the Taylor approximation property of the noise-free covariance matrix, the proposed method firstly decouples the estimation of the nominal direction-of-arrival (DOA) from that of the angular spread. And then utilizing the nominal DOA estimation and a special cost function, the angular spread can be estimated by constructing one-dimensional (1-D) searching spectrum. Compared with some existing techniques, our approach requires a much lower computational cost and can exhibit a better estimation performance in a single ID source case, especially for low signal-to-noise ratio. Simulation results illustrate the performance of the proposed method. Springer Science+Business Media, LLC., 2012 Incoherently distributed source nationallicence Parametric estimation nationallicence Nominal DOA nationallicence Angular spread nationallicence Noise-free covariance matrix nationallicence Zheng Zhi School of Communication and Information Engineering, University of Electronic Science and Technology of China, 610054, Chengdu, China aut Li Guangjun School of Communication and Information Engineering, University of Electronic Science and Technology of China, 610054, Chengdu, China aut Wireless Personal Communications Springer US; http://www.springer-ny.com 70/4(2013-06-01), 1653-1663 0929-6212 70:4<1653 2013 70 11277 https://doi.org/10.1007/s11277-012-0772-6 text/html Onlinezugriff via DOI 1 brief-communication jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s11277-012-0772-6 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Zheng Zhi School of Communication and Information Engineering, University of Electronic Science and Technology of China, 610054, Chengdu, China aut NATIONALLICENCE 700 1- Li Guangjun School of Communication and Information Engineering, University of Electronic Science and Technology of China, 610054, Chengdu, China aut NATIONALLICENCE 773 0- Wireless Personal Communications Springer US; http://www.springer-ny.com 70/4(2013-06-01), 1653-1663 0929-6212 70:4<1653 2013 70 11277 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer