利用海浪噪声自相关实现散射体无源探测

发布时间：2018-03-06 02:19

  本文选题：噪声自相关　切入点：散射体被动探测　出处：《物理学报》2017年19期 　论文类型：期刊论文

【摘要】：提出了一种利用海浪噪声自相关实现散射体无源探测的新方法.将各接收器记录噪声信号的自相关减去所有接收器记录噪声信号自相关的平均值,得到散射信号的到达结构,然后结合基尔霍夫移位算法实现对散射体的探测.与利用背景噪声互相关提取格林函数从而实现散射体探测的方法不同,自相关无需考虑各个接收器之间的大量数据传输及时间同步问题,这为相距较远的多接收器和移动平台目标探测提供了极大的方便.将所提出的方法应用于实验数据中,最终探测结果与实际测量结果相比差别不大,验证了方法的有效性.
[Abstract]:In this paper, a new method for passive detection of scatterers using wave noise autocorrelation is proposed. The autocorrelation of noise signals recorded by each receiver is subtracted from the average values of autocorrelation of noise signals recorded by all receivers, and the arrival structure of scattering signals is obtained. Then, the detection of scatterers is realized by using Kirchhoff shift algorithm, which is different from the method of extracting Green's function by cross-correlation of background noise to realize the detection of scatterers. Autocorrelation does not take into account the problem of large amount of data transmission and time synchronization between various receivers, which provides great convenience for target detection of multi-receivers and mobile platforms far away. The proposed method is applied to experimental data. The difference between the final detection results and the actual measurement results is not significant, which verifies the effectiveness of the method.
【作者单位】： 中国海洋大学海洋技术系;
【基金】：国家自然科学基金(批准号:11674294,11374270,11374271) 青岛海洋科学与技术国家实验室基金(批准号:QNLM20160RP0106)资助的课题~~
【分类号】：P733.22
，

本文编号：1572914