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台风水下噪声谱级随水深变化关系研究

Study on Relationship of Typhoon Underwater Noise Spectrum Levels with Water Depths

  • 摘要: 以海面噪声源的声传播理论为基础,研究了海面噪声源随水深的传播特性。利用克努森以及库普曼−费尔拉优化台风噪声模型研究结论,结合海面声源随水深衰减的研究结论,获得了不同频率下台风噪声声压谱级随水深改变的变化关系曲线。通过对实测台风数据的分析,验证了台风噪声不同频率下声压谱级随水深变化规律的正确性,并分析了某些频段差值稍微偏大的原因。结论可为浅水台风水下噪声建模以及高海况水声探测抗自然干扰评估提供有价值的参考。

     

    Abstract: Based on the sound propagation theory of sea surface noise sources, the propagation characteristics of sea surface noise sources with water depths are studied in this paper. Based on Knudsen and Koopman-Ferra’s optimization of typhoon noise model and the attenuation of sea surface sound sources with water depths, the relation curve of typhoon noise sound pressure spectrum levels at different frequencies with water depths is obtained. Through the analysis of the measured typhoon data, the correctness of the variation rule of typhoon noise spectrum levels at different frequencies with water depths is verified, and the reason why the difference of some frequency bands is slightly larger is analyzed. The conclusion can provide a valuable reference for the underwater noise modeling of shallow-water typhoons and the assessment of natural interference resistance in underwater acoustic detection under severe sea conditions.

     

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