| A Void Reference Sensor-Multiple Signal Classification Algorithm for More Accurate Direction of Arrival Estimation of Low Altitude Target |
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| 作者姓名： | 肖卉 孙进才 袁骏 牛奕龙 |
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| 作者单位： | [1]College of Marine Engineering, Northwestern Polytechnical University, Xi＇an 710072, China; [2]Electronic Engineering College, Navy Engineering University, Wuhan 430033, China |
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| 摘 要： | There exists MUSIC （multiple signal classification） algorithm for direction of arrival （DOA） estimation. This paper is to present a different MUSIC algorithm for more accurate estimation of low altitude target. The possibility of better performance is analyzed using a void reference sensor （VRS） in MUSIC algorithm. The following two topics are discussed： 1） the time delay formula and VRS-MUSIC algorithm with VRS located on the minus of z-axes; 2） the DOA estimation results of VRS-MUSIC and MUSIC algorithms. The simulation results show VRS-MUSIC algorithm has three advantages compared with MUSIC： 1） When the signal to noise ratio （SNR） is more than - 5 dB, the direction estimation error is 1/2 as much as that obtained by MUSIC; 2） The side lobe is more lower and the stability is better; 3） The size of array that the algorithm requires is smaller.
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| 关 键 词： | 多信号分类算法 VRS传感器 低海拔目标 精确方位估计 |
| 文章编号： | 1673-002X（2007）01-0024-04 |
| 收稿时间： | 2006-02-28 |
A Void Reference Sensor-Multiple Signal Classification Algorithm for More Accurate Direction of Arrival Estimation of Low Altitude Target |
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| XIAO Hui,SUN Jin-cai,YUAN Jun,NIU Yi-long.A Void Reference Sensor-Multiple Signal Classification Algorithm for More Accurate Direction of Arrival Estimation of Low Altitude Target[J].Journal of China Ordnance,2007,3(1):24-27. |
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| Authors: | XIAO Hui SUN Jin-cai YUAN Jun NIU Yi-long |
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| Abstract: | There exists MUSIC (multiple signal classification) algorithm for direction of arrival (DOA) estimation. This paper is to present a different MUSIC algorithm for more accurate estimation of low altitude target. The possibility of better performance is analyzed using a void reference sensor (VRS) in MUSIC algorithm. The following two topics are discussed: 1) the time delay formula and VRS-MUSIC algorithm with VRS located on the minus of z-axes; 2) the DOA estimation results of VRS-MUSIC and MUSIC algorithms. The simulation results show VRS-MUSIC algorithm has three advantages compared with MUSIC: 1 ) When the signal to noise ratio (SNR) is more than - 5 dB, the direction estimation error is 1/2 as much as that obtained by MUSIC; 2) The side lobe is more lower and the stability is better; 3) The size of array that the algorithm requires is smaller. |
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| Keywords: | information processing technique VRS-MUSIC algorithm low altitude target VRS microphone array Low Altitude Target Estimation Arrival Direction Accurate Classification Algorithm Signal Reference size array side lobe lower stability estimation error signal to noise ratio simulation results show DOA estimation algorithms |
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