双光束成型与垂直接收阵列和机会船的双光束成型
Donghyeon Kim1, Gihoon Byun2, H C Song1
1Scripps Institution of Oceanography, La Jolla, California 92093-0238, USA.
The Journal of the Acoustical Society of America
|October 7, 2025
概括
这项研究适应了双波束形成用于声学海洋学,使得从单个接收器阵列和未知船源进行角度估计. 该方法准确地确定浅水中的声波射线角度.
科学领域:
- 海洋声学 海洋声学
- 阵列信号处理系统的信号处理.
- 水下声学 水下声学
背景情况:
- 传统的双光束成形需要源和接收器阵列.
- 估计声学自射线角度对于水下声学传播研究至关重要.
- 实际场景通常涉及未知的宽带来源,如船只.
研究的目的:
- 将双波束成形扩展到单个垂直接收阵列和未知宽带源.
- 开发一种方法来估计在现实的海洋环境中的声学发射和接收角度.
- 用经过船只的实验数据验证该技术.
主要方法:
- 盲点解卷以估计接收器阵列和源之间的绿色函数.
- 波导不变理论来推断格林的函数,并合成一个水平数组.
- 适用于浅水中的宽带船舶噪声 (200-900 Hz).
主要成果:
- 通过使用单个垂直阵列成功估计了声学发射和接收角度.
- 该方法准确地描述了对未知源的格林函数.
- 实验结果显示与基于模型的预测有很高的一致性,误差低于1°.
结论:
- 适应的双光束成形技术对于实际的水下声学场景是可行的.
- 这种方法提供了精确的 eigenray 角度估计与减少阵列要求.
- 这种方法为研究未知来源的声学传播提供了有价值的工具.
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