用逐点测量法完全重建声波场
Full reconstruction of acoustic wavefields by means of pointwise measurements
摘要：
考虑了海洋中的声传播。我们展示了一种新的算法，通过垂直阵列使用逐点测量的全波场重建。该算法是基于所谓的离散变量表示，可以实现音调和脉冲信号。结果表明，该算法对阵列畸变和中等幅度的环境噪声具有较强的鲁棒性。利用浅海波导模型进行了数值模拟，验证了重构的有效性。结果发现，底部声衰减的影响，使准确的重建与阵列具有相对较低的水听器密度。
英文摘要：
Sound propagation in the ocean is considered. We demonstrate a novel algorithm for full wavefield reconstruction using pointwise measurements by means of a vertical array. The algorithm is based on the so-called discrete variable representation and can be implemented both for tonal and pulse signals. It is shown that the algorithm is robust against array distortions and ambient noise of moderate amplitude. Efficiency of reconstruction is verified by means of numerical simulation with a model of a shallow-sea waveguide. It is found that the effect of bottom sound attenuation enables accurate reconstruction with arrays having relatively low density of hydrophones.
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