Analysis of Underwater Acoustic Channel based on Angle of Arrival Distribution

M. Rawat, Brejesh Lall, Seshan Srirangarajan
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引用次数: 2

Abstract

Owing to the unique geometry of the underwater acoustic (UWA) channel, analysis based on the angle of arrival (AoA) distribution is fundamental. The energy in the UWA channel remains confined due to the geometry, and the number of interactions with the surface and bottom (also referred to as bounce) tends to be substantial. The acoustic signal undergoes coherent or incoherent scattering at the sea surface, depending upon the surface roughness before reaching the receiver. In this work, we derive the AoA distribution for incoherent scattering for a single bounce path. Channel characteristics such as the autocorrelation function (ACF) and Doppler spread (DS) based on the AoA distribution have been evaluated. Their significance and effect under different underwater geometries have been studied.
基于到达角分布的水声信道分析
由于水声信道具有独特的几何结构,基于到达角分布的分析是水声信道分析的基础。由于其几何形状,UWA通道中的能量仍然受到限制,并且与表面和底部的相互作用(也称为反弹)的数量趋于可观。声信号在到达接收器之前在海面上经历相干或非相干散射,这取决于海面的粗糙度。本文推导了单弹跳路径下非相干散射的AoA分布。对基于AoA分布的自相关函数(ACF)和多普勒扩频(DS)等信道特性进行了评价。研究了它们在不同水下几何形状下的意义和作用。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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