The arithmetic formulas for sine wave, linear frequency modulation signal, V-style frequency modulation signal, white noise signal, reverberation signal and echo signal are given by their definition.
根据信号类型的定义,给出了正弦信号、线性调频信号、V型调频信号、白噪声、混响和回波信号的合成公式。
2
The range and depth dependence of the long-range reverberation and echo-reverberation ratio were calculated for the cases of negative gradient and homogeneous layers.
用该法在浅海负梯度和均匀层情况下,计算了远程混响和回波、混响比的距离、深度结构。
3
The capability of time reversal processing for echo-to-reverberation enhancement is studied using computer simulation under the condition that target is in the middle of the shallow water guide.