【摘要】 作用距离大小是衡量相关计程仪性能的一项重要指标 ;计程仪作用距离越大 ,就可以在越广泛的海深上测得船只的绝对速度。本文从主动声纳方程出发 ,推导出了时间相关计程仪的作用距离表达式 ,并对计程仪在典型工作频率为 2 0kHz时不同航速下的最大作用距离进行了估算。最后本文还简要讨论了估计作用距离的一种近似方法。更多还原

【Abstract】 The working range is an important parameter for the performance of an acoustic correlation log. The longer the working range is, the deeper the absolute velocity of a vessel can be measured in sea. This paper derives the formulas of working range for a temporal correlation log from the active sonar equations and estimates the corresponding maximum working ranges of this log at different voyage velocities at a typical working frequency of 20kHz. In the last ,an approximate estimation for the working range is also discussed.更多还原