基于吉布斯采样的方位自聚焦阵形校正方法  

An Array Shape Calibration Method Based on Gibbs Sampling and Azimuth Self-focusing

作　　者：王冠群 黄海宁[1,2] 张舒然 迟骋 高善国[1,2] 曾腾 张武 WANG Guanqun;HUANG Haining;ZHANG Shuran;CHI Cheng;GAO Shanguo;ZENG Teng;ZHANG Wu(Laboratory of Science and Technology on Underwater Acoustic Signal Processing,Institute of Acoustics,Chinese Academy of Sciences,Beijing,100190,China;Key Laboratory of Science and Technology on Advanced Underwater Acoustic Signal Processing,Chinese Academy of Sciences,Beijing,100190,China;China State Shipbuilding Corporation Systems Engineering Research Institute,Beijing,100036,China)

机构地区：[1]中国科学院声学研究所水下信息技术实验室,北京100190 [2]中国科学院先进水下信息技术重点实验室,北京100190 [3]中国船舶工业系统工程研究院,北京100036

出　　处：《网络新媒体技术》2024年第2期45-52,共8页Network New Media Technology

摘　　要：阵列形态作为阵列信号处理的基础参数,其准确度严重影响阵列信号处理算法的增益和性能。针对柔性声基阵的阵形畸变问题,提出一种基于吉布斯采样的方位自聚焦阵形校正方法。该方法建立噪声源目标的阵列接收模型,以阵列互相关函数、阵列协方差函数为基础的联合似然,通过吉布斯采样循环迭代方式,实现对阵列形态的实时估计。最后结合非声传感器提供的阵列航向信息,对阵列形态进行旋转匹配,获得阵列校正后的各阵元相对位置输出。仿真结果证明,通过该方法阵形校正后能够获得相对准确的阵元相对位置,具有较好的研究和参考意义。As the parameter of array signal processing,the accuracy of array shape seriously affects the gain and performance of array signal processing algorithm.In order to solve the formation distortion problem of flexible array,an array shape calibration method based on Gibbs sampling and azimuth self-focusing is proposed.In this method,the array receiving model of noise source target is established,and the joint updating likelihood based on the array cross-correlation function and array covariance function is used to realize the real-time estimation of the array shape through the Gibbs sampling iteration.Finally,combined with the heading information provided by the non-acoustic sensor,the array shape is rotated to match,and the relative positions of each element after array correction are obtained.The simulation results show that the method can obtain relatively accurate relative positions of the array elements after the formation correction,which has good research and reference significance.

关 键 词：柔性声基阵 阵形校正 吉布斯采样 声学处理 方位自聚焦 

分 类 号：TB56[交通运输工程—水声工程]