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首页> 外文期刊>IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control >Implementation of the near-field signal redundancy phase-aberration correction algorithm on two-dimensional arrays
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Implementation of the near-field signal redundancy phase-aberration correction algorithm on two-dimensional arrays

机译：二维阵列上近场信号冗余相差校正算法的实现

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摘要

Near-field signal-redundancy (NFSR) algorithms for phase-aberration correction have been proposed and experimentally tested for linear and phased one-dimensional arrays. In this paper the performance of an all-row-plus-two-column, two-dimensional algorithm has been analyzed and tested with simulated data sets. This algorithm applies the NFSR algorithm for one-dimensional arrays to all the rows as well as the first and last columns of the array. The results from the two column measurements are used to derive a linear term for each row measurement result. These linear terms then are incorporated into the row results to obtain a two-dimensional phase aberration profile. The ambiguity phase aberration profile, which is the difference between the true and the derived phase aberration profiles, of this algorithm is not linear. Two methods, a trial-and-error method and a diagonal-measurement method, are proposed to linearize the ambiguity profile. The performance of these algorithms is analyzed and tested with simulated data sets
机译：已经提出了用于相差校正的近场信号冗余（NFSR）算法，并针对线性和相控一维阵列进行了实验测试。在本文中，使用模拟数据集分析和测试了全行加两列二维算法的性能。此算法将一维数组的NFSR算法应用于数组的所有行以及第一列和最后一列。两列测量的结果用于得出每个行测量结果的线性项。然后将这些线性项合并到行结果中，以获得二维相位像差轮廓。该算法的歧义相差像差是真实算法和导出相差像差之间的差，它不是线性的。提出了两种方法，试错法和对角线测量法，以使模糊度轮廓线性化。这些算法的性能已通过模拟数据集进行了分析和测试

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