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本文介绍一台供水面船只使用的声速测量仪,它是在相位法的基础上以脉冲波代替正弦波,以“时延差”代替“相位差”确定水中声速的方法,我们暂称它为脉冲“相位法”。直接由X-Y记录仪记录声速随深度垂直变化曲线。声速测量范围为1435-1542米/秒,单量程复盖,测量误差不大于±0.75米/秒,探头最大工作深度为200米,测量误差为全程的2%。一、引言声波在海洋中的传播途径占声速在垂直断面内的梯度有密切关系。海水中的声速是温
This paper introduces a sound velocity measuring instrument used by a water surface vessel. It is based on the phase method to replace the sine wave with a pulse wave, and to determine the sound velocity in the water by using the “delay difference” instead of “phase difference” Temporarily call it pulse “phase method ”. Directly recorded by the X-Y recorder sound velocity perpendicular to the depth of the curve. Sound velocity measurement range of 1435-1542 m / s, single range coverage, measurement error is not greater than ± 0.75 m / s, the maximum working depth of the probe is 200 meters, the measurement error of 2% of the whole. I. INTRODUCTION Sound waves propagating in the oceans have a close relationship with the gradient of sound velocity in the vertical section. The speed of sound in seawater is warm