School of Mechanical Engineering, Georgia Institute of Technology, Atlanta, Georgia 30332-0405, USA.
J Acoust Soc Am. 2010 Feb;127(2):EL42-7. doi: 10.1121/1.3284548.
This letter describes a ray-based blind deconvolution technique for ocean sound channels that produces broadband estimates of the source-to-array impulse response and the original source waveform from array-measured signals corrupted by (unknown) multipath propagation. The technique merely requires elementary knowledge of array geometry and sound speed at the array location. It is based on identifying a ray arrival direction to separate source waveform and acoustic-propagation phase contributions to the received signals. This technique successfully decoded underwater telecommunication sequences in the bandwidth 3-4 kHz that were broadcast 4 km in a 120-m-deep ocean sound channel without a-priori knowledge of sound channel characteristics.
这封信描述了一种基于射线的海洋声道盲反卷积技术，可从被（未知）多径传播污染的阵列测量信号中生成源到阵列脉冲响应和原始源波形的宽带估计。该技术仅需要对阵列几何形状和阵列位置处的声速有基本的了解。它基于识别射线到达方向，以分离接收信号中的源波形和声传播相位贡献。该技术成功地解码了在没有声道特征先验知识的情况下在 120 米深的海洋声道中广播 4 公里的水下电信序列，带宽为 3-4 kHz。
