Real-Valued Khatri-Rao Subspace Approaches on the ULA and a New Nested Array
作者： Jun Fang , Tiantian Tuo , Bing Zeng , Huiping Duan
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摘要: In underdetermined direction-of-arrival (DOA) estimation using the covariance-based signal models, computational complexity turns into a noticeable issue because of high dimension virtual array manifold. this paper, real-valued Khatri-Rao (KR) approaches are developed on uniform linear (ULA) and nested array. The complexities subspace decomposition spectral search reduced compared with complex-valued KR approach. By designing special transformation matrix, influence noise is removed in mean time while data transformed from complex domain to real domain. Deploying sensors nonuniform spacings can raise degree freedom (DOF) hence help detect more sources situation. To increase DOF further, new geometry designed. denoising approach resolve complexities. performance improvement demonstrated by numerical studies.
arxiv.org参考文章(8)
Harry L. Van Trees, Detection, Estimation, And Modulation Theory ,(1968)
Zhen-Qing He, Zhi-Ping Shi, Lei Huang, Covariance sparsity-aware DOA estimation for nonuniform noise Digital Signal Processing. ,vol. 28, pp. 75- 81 ,(2014) , 10.1016/J.DSP.2014.02.013
S. Haykin, J.P. Reilly, V. Kezys, E. Vertatschitsch, Some aspects of array signal processing IEE Proceedings F Radar and Signal Processing. ,vol. 139, pp. 1- 26 ,(1992) , 10.1049/IP-F-2.1992.0001
Zhen-Qing He, Zhi-Ping Shi, Lei Huang, Hing Cheung So, Underdetermined DOA Estimation for Wideband Signals Using Robust Sparse Covariance Fitting IEEE Signal Processing Letters. ,vol. 22, pp. 435- 439 ,(2015) , 10.1109/LSP.2014.2358084
Piya Pal, P. P. Vaidyanathan, Nested Arrays: A Novel Approach to Array Processing With Enhanced Degrees of Freedom IEEE Transactions on Signal Processing. ,vol. 58, pp. 4167- 4181 ,(2010) , 10.1109/TSP.2010.2049264
Wing-Kin Ma, Tsung-Han Hsieh, Chong-Yung Chi, DOA Estimation of Quasi-Stationary Signals With Less Sensors Than Sources and Unknown Spatial Noise Covariance: A Khatri–Rao Subspace Approach IEEE Transactions on Signal Processing. ,vol. 58, pp. 2168- 2180 ,(2010) , 10.1109/TSP.2009.2034935
A. Moffet, Minimum-redundancy linear arrays IEEE Transactions on Antennas and Propagation. ,vol. 16, pp. 172- 175 ,(1968) , 10.1109/TAP.1968.1139138
Palghat P. Vaidyanathan, Piya Pal, Sparse Sensing With Co-Prime Samplers and Arrays IEEE Transactions on Signal Processing. ,vol. 59, pp. 573- 586 ,(2011) , 10.1109/TSP.2010.2089682