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Method for enhancing signal-to-noise ratio and resolution of amplitude stable signals

机译:增强信噪比和幅度稳定信号分辨率的方法

摘要

A method for enhancing signal-to-noise ratio and resolution of amplitude stable signals wherein underwater acoustic data is first collected with an array of hydrophones, and then the data is digitally sampled. After producing spectra of sequential time snapshots of the digitally-sampled data, the spectra are beamformed for a single frequency. Next the low resolution beamformer response is deconvolved from the data by use of a calculated beam response pattern for the hydrophone array, so that many high-resolution estimates are created for each time snapshot. Finally, the resulting high resolution estimates are reduced to a single estimate for each spatial bin across all of the time snapshots, and the high resolution, high gain results are displayed.
机译:一种提高信噪比和幅度稳定信号的分辨率的方法,其中首先用水听器阵列收集水下声数据,然后对数据进行数字采样。在生成数字采样数据的连续时间快照的频谱后,将频谱形成单个频率的波束。接下来,通过使用用于水听器阵列的计算出的波束响应模式,将低分辨率波束形成器响应从数据中解卷积,以便为每个时间快照创建许多高分辨率估计。最终,将所有时间快照中每个空间仓的高分辨率估计值缩减为单个估计值,并显示高分辨率,高增益结果。

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