声矢量阵双四元数模型及波束域DOA估计算法
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摘要
针对传统的矢量水听器阵数据处理方法将水听器的输出用一复值的长矢量来表示,没有充分利用矢量水听器各振速通道的正交关系,提出了用双四元数对矢量水听器的输出数据建模,既保留了矢量水听器各通道间的正交性,又增强了对相关噪声的抑制能力。在此基础上,推导了波束域的双四元数方位估计算法,减少了算法的运算量,提高了算法在低信噪比下的分辨能力。通过仿真实验证明了算法的有效性。
In the traditional vector data processing methods,the output of vector hydrophone array is expressed as a complex column vector,which cannot hold the orthogonality of the inside structure.Here,biquaternion algebra is employed to model the output of a vector hydrophone,which holds the orthogonality of the inside structure and is robust to coherent noises.What's more,in order to cut down the computational complexity and improve resolution power,biquaternion based DOA algorithm of beam space is introduced.Simulations and comparisons are given at the end,which verify the efficiency of the algorithm.
In the traditional vector data processing methods,the output of vector hydrophone array is expressed as a complex column vector,which cannot hold the orthogonality of the inside structure.Here,biquaternion algebra is employed to model the output of a vector hydrophone,which holds the orthogonality of the inside structure and is robust to coherent noises.What's more,in order to cut down the computational complexity and improve resolution power,biquaternion based DOA algorithm of beam space is introduced.Simulations and comparisons are given at the end,which verify the efficiency of the algorithm.
引文
[1]孙贵青,杨德森,时胜国.基于矢量水听器的声压和质点振速的空间相关系数[J].声学学报,2003,28(6):509-513.
[2]姚直象,胡金华,姚东明.基于多重信号分类法的一种声矢量阵方位估计算法[J].声学学报,2008,33(4):305-309.
[3]B A Cray,A H Nuttall.Directivity factors for linear arrays of velocity sensors[J].J Acoust.Soc.Am.,2001,110(1):324-331.
[4]张揽月,杨德森.矢量阵的非空间ESPRIT算法[J].哈尔滨工程大学学报,2009,30(4):406-410.
[5]D Levin,S Gannot.Direction-of-arrival estimation using acoustic vector sensors in the presence of noise[C]//ICASSP,2011:105-108.
[6]梁国龙,张锴,付进,等.单矢量水听器的高分辨方位估计应用研究[J].兵工学报,2011,32(8):986-990.
[7]陈川,陈韶华,李琪.基于自适应Notch滤波器的矢量阵多目标分辨研究[J].兵工学报,2011,32(9):1131-1135.
[8]M Hawkes,A Nehorai.Acoustic Vector-Sensor Correlations in Ambient Noise[J].IEEE Journal of Oceanic Engineering,2001,26(3):337-347.
[9]A Abdi,H Guo.A correlation model for vector sensor arrays in underwater communication systems[J].OCEANS,2008:1-12.
[10]鄢锦,罗显志,侯朝焕.海洋环境噪声场中声压和质点振速的空间相干[J].声学学报,2006,31(4):310-315.
[11]邹吉武,孙大军,吕云飞,等.海洋矢量噪声场试验研究[J].哈尔滨工程大学学报,2011,32(1):16-20.
[2]姚直象,胡金华,姚东明.基于多重信号分类法的一种声矢量阵方位估计算法[J].声学学报,2008,33(4):305-309.
[3]B A Cray,A H Nuttall.Directivity factors for linear arrays of velocity sensors[J].J Acoust.Soc.Am.,2001,110(1):324-331.
[4]张揽月,杨德森.矢量阵的非空间ESPRIT算法[J].哈尔滨工程大学学报,2009,30(4):406-410.
[5]D Levin,S Gannot.Direction-of-arrival estimation using acoustic vector sensors in the presence of noise[C]//ICASSP,2011:105-108.
[6]梁国龙,张锴,付进,等.单矢量水听器的高分辨方位估计应用研究[J].兵工学报,2011,32(8):986-990.
[7]陈川,陈韶华,李琪.基于自适应Notch滤波器的矢量阵多目标分辨研究[J].兵工学报,2011,32(9):1131-1135.
[8]M Hawkes,A Nehorai.Acoustic Vector-Sensor Correlations in Ambient Noise[J].IEEE Journal of Oceanic Engineering,2001,26(3):337-347.
[9]A Abdi,H Guo.A correlation model for vector sensor arrays in underwater communication systems[J].OCEANS,2008:1-12.
[10]鄢锦,罗显志,侯朝焕.海洋环境噪声场中声压和质点振速的空间相干[J].声学学报,2006,31(4):310-315.
[11]邹吉武,孙大军,吕云飞,等.海洋矢量噪声场试验研究[J].哈尔滨工程大学学报,2011,32(1):16-20.