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题名:
A Novel Self-Calibration Method for Acoustic Vector Sensor
作者: Zhang Y(张瑶); Fu, Jin; Li GN(李冠男)
作者部门: 海洋信息技术装备中心
通讯作者: 张瑶
刊名: MATHEMATICAL PROBLEMS IN ENGINEERING
ISSN号: 1024-123X
出版日期: 2018
卷号: 2018, 页码:1-9
收录类别: SCI
WOS记录号: WOS:000428322600001
产权排序: 1
项目资助者: State Key Laboratory of Robotics Foundation [2016-Z08, 2017-Z05] ; Basic Research Project of Technology [JSJL2016604B003] ; Heilongjiang Postdoctoral Research Startup Fund [LBH-Q15025] ; Open Fund of Qingdao National Laboratory for Marine Science and Technology [QNLM2016-0RP0 102]
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.
语种: 英语
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内容类型: 期刊论文
URI标识: http://ir.sia.cn/handle/173321/21735
Appears in Collections:海洋信息技术装备中心_期刊论文

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作者单位: 1.State Key Laboratory of Robotics, Shenyang Institute of Automation, Chinese Academy of Sciences, Shenyang 110016, China
2.National Laboratory of Underwater Acoustic Technology, Harbin Engineering University, Harbin 150001, China

Recommended Citation:
Zhang Y,Fu, Jin,Li GN. A Novel Self-Calibration Method for Acoustic Vector Sensor[J]. MATHEMATICAL PROBLEMS IN ENGINEERING,2018,2018:1-9.
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