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首页> 外文期刊>Oceanic Engineering, IEEE Journal of >Model-Based Sonar Motion Compensation for Bottom Reverberation Coherence
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Model-Based Sonar Motion Compensation for Bottom Reverberation Coherence

机译：基于模型的声纳运动补偿，用于底部混响的连贯性

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摘要

Much signal processing in sonar takes advantage of ping-to-ping bottom reverberation coherence. However, bottom reverberation coherence is degraded owing to environment variations including unknown sonar sensor motions from platform instability. In this paper, an algorithm is described to compensate small-scale motion of high-frequency sonar sensors which is for enhancing ping-to-ping bottom reverberation coherence. The algorithm is based on sonar modeling of bottom reverberation. It comprises three steps: template selection, footprint matching, and phase rotation. Simulations using the sonar modeling indicate that the algorithm can correct for sensor motion of up to several wavelengths for two pings using the data from only one element of the sonar receiver. The algorithm achieves a significant coherence improvement over a large region ensonified by the sonar beam.
机译：声纳中的许多信号处理都利用了ping至ping底部混响的相干性。但是，由于环境变化（包括平台不稳定引起的未知声纳传感器运动），导致底部混响的相干性降低。本文介绍了一种算法，用于补偿高频声纳传感器的小规模运动，该算法可增强ping对ping底部混响的相干性。该算法基于底部混响的声纳建模。它包括三个步骤：模板选择，足迹匹配和相位旋转。使用声纳建模的仿真表明，该算法可以仅使用来自声纳接收器一个元件的数据校正两次ping时最多几个波长的传感器运动。该算法在声纳束所声的大区域上实现了显着的相干性改善。

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