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多子陣互耦條件下的一維波達方向估計及互耦自校正

齊崇英 王永良 張永順 張明智

齊崇英, 王永良, 張永順, 張明智. 多子陣互耦條件下的一維波達方向估計及互耦自校正[J]. 電子與信息學(xué)報, 2006, 28(5): 909-914.
引用本文: 齊崇英, 王永良, 張永順, 張明智. 多子陣互耦條件下的一維波達方向估計及互耦自校正[J]. 電子與信息學(xué)報, 2006, 28(5): 909-914.
Qi Chong-ying, Wang Yong-liang, Zhang Yong-shun, Zhang Ming-zhi. One-Dimensional DOA Estimation and Self-Calibration Algorithm for Multiple Subarrays in the Presence of Mutual Coupling[J]. Journal of Electronics & Information Technology, 2006, 28(5): 909-914.
Citation: Qi Chong-ying, Wang Yong-liang, Zhang Yong-shun, Zhang Ming-zhi. One-Dimensional DOA Estimation and Self-Calibration Algorithm for Multiple Subarrays in the Presence of Mutual Coupling[J]. Journal of Electronics & Information Technology, 2006, 28(5): 909-914.

多子陣互耦條件下的一維波達方向估計及互耦自校正

One-Dimensional DOA Estimation and Self-Calibration Algorithm for Multiple Subarrays in the Presence of Mutual Coupling

  • 摘要: 該文研究多子陣(multiple subarrays)陣元互耦條件下的波達方向(DOA)估計,假設(shè)陣列由多個位置已知的均勻線陣(ULA)組成,但線陣陣元間存在互耦效應(yīng)。利用均勻線陣互耦矩陣的帶狀、對稱Toeplitz性及多子陣互耦矩陣的塊狀對角特性,提出了一種解耦合波達方向估計及互耦自校正算法。該算法在未知陣元互耦參數(shù)的情況下,可準(zhǔn)確估計出信源的波達方向。另外,算法在精確估計波達方向的同時,還可準(zhǔn)確估計出陣元間的互耦系數(shù),實現(xiàn)多子陣的互耦自校正。算法的波達方向估計只需一維譜峰搜索,避免了通常多參數(shù)聯(lián)合估計的多維非線性搜索及迭代運算,可明顯減小算法運算量。文中討論了算法參數(shù)可辨識性的必要條件,并分析計算了多參數(shù)聯(lián)合估計的克拉美-羅界(CRB)。理論分析及蒙特卡羅仿真結(jié)果表明,該算法具有計算量小、DOA估計分辨力高、互耦校正效果好等優(yōu)點。
  • Yin Q Y, Newcomb R, Zou L H. Estimation of 2-D angles of arrival via parallel linear arrays[C]. Proceedings of IEEE ICASSP, Glasgow, Scotland, 1989: 2803-2806.[2]Hua Y B, Sarkar T K, Weiner D D. An L-shaped array for estimating 2-D directions of wave arrival[J]. IEEE Trans. on AP, 1991, 39(2): 143-146.[3]Zoltowski M D, Wong K T. Closed-form eigenstructure-baseddirection finding using arbitrary but identical subarrays on asparse uniform Cartesian array grid[J].IEEE Trans. on SP.2000, 48(8):2205-2210[4]Swindlehurst A L, Stoica P, Jansson M. Exploiting arrays with multiple invariances using MUSIC and MODE[J].IEEE Trans. on SP.2001, 49(11):2511-2521[5]Weiss A J, Friedlander B. Effects of modeling errors on the resolution threshold of the MUSIC algorithm[J].IEEE Trans. on SP.1994, 42(6):1519-1526[6]Yeh C, Leou M, Ucci D R. Bearing estimations with mutual coupling present[J]. IEEE Trans. on AP, 1989, 37(10): 1332-1335.[7]Dandekar K R, Ling H. Experimental study of mutual coupling compensation in smart antenna applications[J].IEEE Trans. Wireless Communication.2002, 1(3):480-487[8]Stavropoulos K, Manikas A. Array calibration in the presence of unknown sensor characteristics and mutual coupling[C]. Proceedings of the European Signal Processing Conference, 2000: 1417-1420.[9]Inder J, James G R. An experimental study of antenna array calibration[J].IEEE Trans. on AP.2003, 51(3):664-667[10]Friedlander B, Weiss A J. Direction finding in the presence of mutual coupling[J].IEEE Trans. on AP.1991, 39(3):273-284[11]Jaffer A G. Sparse mutual coupling matrix and sensor gain/phase estimation for array auto-calibration. Proceedings of IEEE Radar Conference, 2002: 294-297.[12]Hung E. A critical study of a self-calibration direction-finding method for arrays[J].IEEE Trans. on AP.1994, 42(2):471-474
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出版歷程
  • 收稿日期:  2004-12-30
  • 修回日期:  2005-05-15
  • 刊出日期:  2006-05-19

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