重庆邮电大学学报（自然科学版）Issue(1)：24-29,6.DOI:10.3979/j.issn.1673-825X.2016.01.004
L型阵列的二维DOA估计方法
Method of two-dimensional DOA estimation for L-shaped array
摘要
Abstract
Under low SNR region or with the small number of the snapshots,the classic two-dimensional (2D)direction-of-arrival (DOA)algorithms have the drawback of low estimation accuracy.To resolve the problem,the paper presents a new method of 2D DOA estimation suitable for low signal-to-noise (SNR)region and small number of the snapshots by fully tak-ing advantage of the autocorrelation and cross-correlation information of the received snapshots of L-shape sensor arrays. Analytically optimizing the problem of 2D spectrum peak search,we obtain the specific constraint relationship between the azimuth and elevation.On the basis of it,the method firstly converts the objective function with 2D angle parameter into the one with one-dimensional (1 D)angle parameter.Then the azimuth (or elevation)is obtained by 1 D searching.Finally, the elevation (or azimuth)can be estimated according to the specific constraint relationship between the azimuth and eleva-tion.The method only needs 1 D spectrum peak searching,and the estimated azimuth and elevation can be automatically matched.The computer simulations verify the effectiveness of the proposed method under low SNR region and with the small number of the snapshots.关键词
波达方向(DOA)估计/低信噪比(SNR)/小快拍数/信源个数Key words
direction-of-arrival (DOA)estimation/low signal-to-noise (SNR)/small snapshots/the number of sources分类
信息技术与安全科学引用本文复制引用
景小荣,刘雪峰..L型阵列的二维DOA估计方法[J].重庆邮电大学学报（自然科学版）,2016,(1):24-29,6.基金项目
国家科技重大专项（2014ZX03001009-003）Foundation ItemThe National Science and Technology Major Project （）
