The result of the sea test showed that the proposed technical scheme is effective in shallow water channel.
海试实验结果验证了该技术方案在浅海信道下的有效性。
Based on the suitable channel model, an implementation of quasi-cyclic low density parity check codes (QC-LDPC) for acoustic communication system in shallow water is demonstrated.
讨论了准循环低密度校验码(QC - LDPC)在浅海水声信道中的实现方案。
Experimental results show that low frequency pulse compression and channel match method can be used in shallow water sound channel to improve the SNR.
实验表明，脉冲压缩可有效增加浅海低频声脉冲的传输距离，信道匹配可用于消除多途对脉冲信号检测信噪比的影响。
Based on the theory of the local spectrum of ambient-sea noise field, theoretical models of the low-noise-channel for typical shallow-water negative gradient (or thermocline) are developed.
本文根据海洋噪声场随机局部谱展开理论，分析了典型浅海负梯度(或负跃层)下低噪声信道的理论模型。
In this paper, a differential equation of describing the lateral distribution of depth averaged velocity is obtained by simplifying 2d shallow water equations of open channel flow.
通过简化宽浅明渠二维水流运动方程，得到垂线平均流速在横向变化的微分方程序。
In this paper, a differential equation of describing the lateral distribution of depth averaged velocity is obtained by simplifying 2d shallow water equations of open channel flow.
通过简化宽浅明渠二维水流运动方程，得到垂线平均流速在横向变化的微分方程序。
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