A Novel Self-Calibration Method for Acoustic Vector Sensor

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	A Novel Self-Calibration Method for Acoustic Vector Sensor
	Fu, Jin ; Zhang Y(张瑶); Li GN(李冠男)
刊名	MATHEMATICAL PROBLEMS IN ENGINEERING
	2018
卷号	2018 页码:1-9
ISSN号	1024-123X
通讯作者	Zhang Y(张瑶)
产权排序	1
中文摘要	The acoustic vector sensor (AVS) can measure the acoustic pressure field's spatial gradient, so it has directionality. But its channels may have nonideal gain/phase responses, which will severely degrade its performance in finding source direction. To solve this problem, in this study, a self-calibration algorithm based on all-phase FFT spectrum analysis is proposed. This method is "self-calibrated" because prior knowledge of the training signal's arrival angle is not required. By measuring signals from different directions, the initial phase can be achieved by taking the all-phase FFT transform to each channel. We use the amplitude of the main spectrum peak of every channel in different direction to formulate an equation; the amplitude gain estimates can be achieved by solving this equation. In order to get better estimation accuracy, bearing difference of different training signals should be larger than a threshold, which is related to SNR. Finally, the reference signal's direction of arrival can be estimated. This method is easy to implement and has advantage in accuracy and antinoise. The efficacy of this proposed scheme is verified with simulation results.
WOS标题词	Science & Technology ; Technology ; Physical Sciences
类目[WOS]	Engineering, Multidisciplinary ; Mathematics, Interdisciplinary Applications
研究领域[WOS]	Engineering ; Mathematics
关键词[WOS]	FIELD ARRAY-MANIFOLD ; BLIND CALIBRATION ; ORIENTATION
收录类别	SCI ; EI
语种	英语
WOS记录号	WOS:000428322600001
内容类型	期刊论文
源URL	[http://ir.sia.cn/handle/173321/21735]
专题	沈阳自动化研究所_海洋信息技术装备中心
作者单位	1.National Laboratory of Underwater Acoustic Technology, Harbin Engineering University, Harbin 150001, China 2.State Key Laboratory of Robotics, Shenyang Institute of Automation, Chinese Academy of Sciences, Shenyang 110016, China
推荐引用方式 GB/T 7714	Fu, Jin,Zhang Y,Li GN. A Novel Self-Calibration Method for Acoustic Vector Sensor[J]. MATHEMATICAL PROBLEMS IN ENGINEERING,2018,2018:1-9.
APA	Fu, Jin,Zhang Y,&Li GN.(2018).A Novel Self-Calibration Method for Acoustic Vector Sensor.MATHEMATICAL PROBLEMS IN ENGINEERING,2018,1-9.
MLA	Fu, Jin,et al."A Novel Self-Calibration Method for Acoustic Vector Sensor".MATHEMATICAL PROBLEMS IN ENGINEERING 2018(2018):1-9.