晃动平台下ADCP测流误差分析与校正  

Analysis and amend of measuring error of seawater for ADCP under swaying flat

作　　者：余义德[1] 熊英[1] 

机构地区：[1]中国人民解放军91550部队

出　　处：《海洋环境科学》2012年第2期246-249,共4页Marine Environmental Science

摘　　要：测量不稳定流和受潮汐影响的流量一直是水文工作者所面临的难题。对于工作在海水中的走航式ADCP(声学多普勒流速剖面仪),在测量流速时,受风浪影响,往往引起测量平台的晃动,通过外接光纤陀螺,对平台的姿态进行修正,从而提高ADCP的测量精度。针对典型四波束ADCP建立了在考虑到平台晃动情况下的误差修正模型,仿真结果表明该方法可明显提高测流精度。To measure the unstable ocean current and flux influenced by the tide has always been a problem confronting the hydrologists. When seawater velocity is surveyed by vessel-mounted ADCP, Wind and wave will result in fiat swaying, which might be modified through external fibre-gyroscope so that measuring precision is improved greatly. In this paper, the error amend model is estab- lished toward the typical four-beams ADCP considering fiat swaying. The present method turn out to be effective by simulation, which has displayed favorable precision.

关 键 词：ADCP(Acoustic DOPPLER CURRENT Profilers) 海水 流速 精度 仿真 

分 类 号：X859[环境科学与工程—环境工程]