中南大学学报（自然科学版）Issue(2)：488-494,7.DOI:10.11817/j.issn.1672-7207.2016.02.019
一种有色噪声背景下混合信号的波达方向估计算法
A novel direction of arrival estimation algorithm for uncorrelated and coherent signals with colored noise
摘要
Abstract
A novel direction of arrival estimation algorithm for uncorrelated and coherent signals with colored noise was proposed. Parallel estimation for uncorrelated and coherent signals was utilized in this algorithm, which helped to reduce the computation time. First, a new matrix was reconstructed by exploiting multiple divisional array output vector submatrices, and the DOAs of uncorrelated signals were obtained through eigen-decomposition of this new matrix. Then, a spatial differencing method was adopted to eliminate the interference of uncorrelated signals and colored noise by taking advantage of Toeplitz characteristic. Moreover, the proposed improved matrix decomposition method was carried out to reconstruct a new matrix. With the ROOT-MUSIC algorithm, the DOAs of coherent signals were achieved. The proposed algorithm makes full use of multiple autocorrelation-matrices and cross correlation-matrices of received signals, which requires no spectral peak searching. Hence, the computational burden is low. Theoretical analysis and simulation results show the effectiveness and performance of the proposed algorithm.关键词
波达方向估计/有色噪声/混合信号/并行处理Key words
direction of arrival estimation/colored noise/uncorrelated and coherent signals/parallel estimation分类
信息技术与安全科学引用本文复制引用
司伟建,赵嫔姣,刘鲁涛..一种有色噪声背景下混合信号的波达方向估计算法[J].中南大学学报（自然科学版）,2016,(2):488-494,7.基金项目
国家自然科学基金资助项目(61201410)；中央高校基本科研业务费专项资金资助项目(HEUCF140803)(Project (61201410) supported by the National Natural Science Foundation of China （61201410）
Project (HEUCF140803) supported by the Fundamental Research Funds for the Central Universities) （HEUCF140803）
