摘要
针对SBE911plus直读式CTD剖面仪在使用过程中传感器受环境等因素的影响而出现漂移的问题,着重阐述了现场分析和校正的方法。通过分析可以找出引起漂移的原因,计算出漂移斜率和漂移偏差。根据计算得到的结果进行现场校正可以消除传感器漂移引起的采样数据错误,为高精度数据的获取提供了保证。并且介绍了SBE911plus原始采样数据的处理方法,以及这个过程中必须注意的问题,如电导单元和水体热交换所引起的误差,以及船身起伏造成的数据"打结"现象的解决等。
Field calibration methods are introduced in order to rectify sensor drift caused by the impact of the environment. The configuration of drift slope and drift offset, which are calculated through field calibration analysis, guarantees us to obtain raw data with high accuracy. Data-processing method is also introduced so as to eradicate errors caused by heat exchange between conductivity cell and water and to solve ＂data loop＂ due to ship heave.
出处
《海洋技术》
2008年第3期23-26,30,共5页
Ocean Technology
基金
国际科技合作资助项目(2004DFB02700)
