ADCP资料处理中的船速计算

船载ADCP具有走航测流的特点，弥补了传统测流仪器只有停船才能观测的不足。它可以同时观测多层海流数据，获取连续性资料。ADCP测得流速是海水相对于船体的速度，在正常观测条件下，船速远大于海水流速，因而船速计算是ADCP资料处理的关键。本文对不同的船速计算方法进行了比较，对使用参考层法计算船速的原理、特点和效果进行了论述。

Vessel Velocity Computing in ADCP Data Processing

The vessel-mounted ADCP can measure speed and direction of water currents form a moving vessel instead of the measure method of the traditional instruments that must do form the stopping vessel.ADCP can scale multi-layer water at the same time and obtain current data continuously.The current velocity that ADCP measured relatives to the vessel velocity,and the vessel velocity is much faster than current velocity in normal measure condition,so computing the vessel velocity is the most important key in ADCP data processing.In this paper we compare the different methods of velocity computing in ADCP data processing and discuss the principle,characteristic and result of method using reference layer to comput vessel velocity.