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从海洋表面使用频差自产物) 来散射的连贯反射回收.
Nicholas J Joslyn1, Peter H Dahl2, David R Dowling3
1Applied Physics Program, University of Michigan, Ann Arbor, Michigan 48109, USA.
The Journal of the Acoustical Society of America
|March 7, 2024
概括
频差自制方法通过有效降低声频,恢复了粗海面的连贯反射. 这项技术使用浅水实验数据进行了验证.
科学领域:
- 声学 声学 在声学方面
- 海洋学 海洋学 海洋学
- 波浪散射是一种波浪散射.
背景情况:
- 由粗的海面分散的声场的连贯性随着频率的增加而降低.
- 频差自产物是声场的二次乘积,在频差的频率上充当真正的场.
- 这种自动产品可以减轻表面粗对声信号的影响.
研究的目的:
- 通过使用频差自动产品,研究海面散射中连贯反射的恢复.
- 为了分析来自新泽西海岸的浅水'06 (SW06) 实验的实验数据.
- 将实验结果与理论预测进行比较.
主要方法:
- 利用了SW06实验的数据,其中源处于40米,接收器处于24.3米,200米的距离.
- 将频率差异自动产品应用于由160个海洋表面实现分散的声场.
- 采用Kirchhoff近似和非分析的表面自相关函数用于理论建模.
- 使用数值策略来完善理论和实验之间的协议.
主要成果:
- 测量的自产物在较低的差异频率上显示出显著的连贯反射.
- 使用Kirchhoff近似的理论结果与实验观测结果保持一致.
- 数值策略改善了理论和实验发现之间的一致性.
- 蒙特卡洛散射模拟提供了错误条,支持一致性恢复的有效性.
结论:
- 频差自动产品有效地恢复了在粗的海面散射中连贯的反射.
- 理论模型,特别是当数字精细化时,可以准确地预测观察到的连贯性恢复.
- 该研究验证了自动产品方法用于分析复杂海洋环境中的声波传播.
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