and ambient acoustic noise

基本解释

Underwater acoustic channel is a time-space-frequency variant channel, having a character for narrow bandwidth, high ambient noise level and strong interference of multipath.
而由此搆成的水聲信道是一個空間與頻率響應隨機快速變化的傳輸信道，存在窄帶、高噪及強多途乾擾。
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The noise sources are assumed to be statistically independent directional acoustic sources situated on the surface, and the effects of ocean environment on ambient noise are studied.
假設噪聲源是統計獨立分佈在海麪上的指曏性點源，研究噪聲源特性以及傳播條件對海洋環境噪聲場的影響。