基于阵列时延系统的振源方位估计
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摘要
为了有效地实现振源方位估计,设计了由三个加速度传感器组成的三角形阵列时延系统;分别推导了基于单三角形阵列的定向算法及基于双三角形阵列的定距算法,并且分析了单三角形阵列时延系统的定向精度,从而探讨了单三角形阵列的定向精度与双三角形阵列的定距精度之间的关系;最后通过实验,验证了单三角形阵列对振源方位估计及双三角形阵列对振源距离估计的有效性。
In order to effectively achieve vibration source bearing estimation,a triangle array time delay system composed by three acceleration sensors was designed.Localization algorithm and distance determination algorithm were derived for single triangle array and double triangles array respectively,and then the localization accuracy of single triangle array time delay system was also analyzed,so the relationship between localization accuracy and distance determination accuracy was investigated.The experimental results show that both vibration source position estimation by single triangle array and vibration source distance estimation by double triangles array are effective.
In order to effectively achieve vibration source bearing estimation,a triangle array time delay system composed by three acceleration sensors was designed.Localization algorithm and distance determination algorithm were derived for single triangle array and double triangles array respectively,and then the localization accuracy of single triangle array time delay system was also analyzed,so the relationship between localization accuracy and distance determination accuracy was investigated.The experimental results show that both vibration source position estimation by single triangle array and vibration source distance estimation by double triangles array are effective.
引文
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[4]顾晓辉,王晓鸣.用双直角三角形对声目标定位的研究[J].声学技术,2003,22(1):44-47.
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[6]DEMING R W,PERLOVSKYA L I.Concurrent multi-target locali-zation,data association,and navigation for a swarm of flying sensors[J].Information Fusion,2007,8(3):316-330.
[7]KNAPP C,CARTER G.The generalized correlation method for esti-mation of time delay[J].IEEE Transactions on Acoustics Speechand Signal Processing,1976,24(4):320-327.
[8]PIERSOL A G.Time delay estimation using phase data[J].IEEETransactions on Acoustics Speech and Signal Processing,1981,29(3):471-477.
[9]QUAZI A H.An overview on the time delay estimate in active andpassive system for target location[J].IEEE Transactions on Acous-tics Speech and Signal Processing,1981,29(3):527-533.
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