围绕声纳方程，论证了相关计程仪设计时应考虑的一些问题，如频率的选取，换能器间距等，从而为海底回波仿真的参数选择提供了理论依据。
Some problems, such as the choice of frequency and distance between transducers, are discussed according to sonar equation, which should be considered in the design of Acoustic Correlation Log.
被动测距声纳系统是利用换能器基阵接收的目标辐射（噪声）信号来估计目标距离。
The system of passive ranging SONAR makes use of the target noise received by the equipment which converts energy from one form to another to estimate the target distance.
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