一种基于中心矩的波束形成算法
发布时间：2018-12-15 16:38
【摘要】：高分辨水下目标探测一直是水声信号处理中的重要课题之一.然而许多高分辨算法如MUSIC,ESPRIT需要对信源数进行预估,估计的精确度对算法性能影响很大,制约了算法的实用性.本文提出了一种新的高分辨方位估计算法,中心矩波束形成算法.该方法利用了加权基元信号的各阶中心矩,无需先验信息.本文详细论述了中心矩波束形成算法的原理,对比其他算法指出了该算法性能上的优势.计算机仿真实验表明:中心矩波束形成算法拥有良好的分辨率和旁瓣级,与理论分析的结论一致.
[Abstract]:High resolution underwater target detection is one of the most important subjects in underwater acoustic signal processing. However, many high-resolution algorithms, such as MUSIC,ESPRIT, need to estimate the number of sources, and the accuracy of estimation has a great impact on the performance of the algorithm, which restricts the practicability of the algorithm. In this paper, a new high resolution azimuth estimation algorithm, the center moment beamforming algorithm, is proposed. The method makes use of the central moments of the weighted primitive signal without prior information. In this paper, the principle of the center moment beamforming algorithm is discussed in detail, and the advantages of the algorithm are pointed out compared with other algorithms. The computer simulation results show that the central moment beamforming algorithm has good resolution and sidelobe level, which is consistent with the theoretical analysis.
【作者单位】： 哈尔滨工程大学水声技术重点实验室;哈尔滨工程大学水声工程学院;
【基金】：国家自然科学基金(No.51279033) 黑龙江省自然科学基金(No.F201346)
【分类号】：TN911.7
[Abstract]:High resolution underwater target detection is one of the most important subjects in underwater acoustic signal processing. However, many high-resolution algorithms, such as MUSIC,ESPRIT, need to estimate the number of sources, and the accuracy of estimation has a great impact on the performance of the algorithm, which restricts the practicability of the algorithm. In this paper, a new high resolution azimuth estimation algorithm, the center moment beamforming algorithm, is proposed. The method makes use of the central moments of the weighted primitive signal without prior information. In this paper, the principle of the center moment beamforming algorithm is discussed in detail, and the advantages of the algorithm are pointed out compared with other algorithms. The computer simulation results show that the central moment beamforming algorithm has good resolution and sidelobe level, which is consistent with the theoretical analysis.
【作者单位】： 哈尔滨工程大学水声技术重点实验室;哈尔滨工程大学水声工程学院;
【基金】：国家自然科学基金(No.51279033) 黑龙江省自然科学基金(No.F201346)
【分类号】：TN911.7
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