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本文介绍了两种用于校正大型柔性声纳阵列的阵元位置的方法。在阵列进行海底铺设后,阵元位置的不确定,会大大降低声纳搜索方位的性能。辅助阵元校正方法考虑使用阵上较短距离间隔的阵元作为辅助阵元来对信号到达角和阵元相对相位同时进行估计。并从至少两组不同方位声源点测得的数据,获得阵元的相对坐标位置,得到阵形。为了保证校正的有效性,我们比较了这两种辅助阵元校正方法,通过大量的仿真试验比较它们对辅助阵元误差扰动的敏感度,并选择了宽容性较好的MUSIC辅助阵元方法进行了实际的海上试验。
This article describes two methods for correcting the location of array elements in large flexible sonar arrays. After the array is laid on the sea floor, the uncertainty of the array element position greatly reduces the performance of the sonar search azimuth. The auxiliary element correction method considers the use of array elements with shorter distance intervals on the array as auxiliary elements to simultaneously estimate the signal arrival angle and the element relative phase. And from at least two sets of data measured at different sound source points to obtain the relative coordinate position of the array element to obtain the array shape. In order to ensure the validity of the calibration, we compare the two methods of the auxiliary array element calibration, compare their sensitivity to the auxiliary array element error perturbation through a large number of simulation experiments and select the MUSIC auxiliary array element method with better tolerance The actual sea test.