Motion Correction for Shipborne Turbulence Sensors
Motion Correction for Shipborne Turbulence Sensors
复制标题
船载湍流传感器的运动校正
DOI：
10.1175/jtech-1685.1
复制
发表时间：
2005
影响因子：
2.2
通讯作者：
E. F. Bradley
中科院分区：
文献类型：
--
作者：
E. Schulz;B. Sanderson;E. F. Bradley
介绍并分析了一种利用简单廉价的捷联式加速度计系统从风测量中消除船舶运动的方法。在轻微的海洋，误差分析表明，平均均方根与运动校正的不确定性分别为0.03和0.006 m s-1的水平和垂直风，分别为所有运行分析。由于运动修正，风应力的平均不确定性为8 10 4 Nm 2。在一个浅的沿海海域设置，船舶运动似乎几乎总是被成功地检测到，并从所观察到的风的垂直分量。在86%的分析运行中，水平风分量似乎得到了成功的校正。运动校正的协方差计算的风应力有显着的影响。在分析的运行中，大约有一半的风应力变化超过15%。运动修正对热流的影响较小。
A method for removing ship motion from wind measurements using a simple and inexpensive strap-down system of accelerometers is described and analyzed. In slight seas, error analysis indicates that mean root-mean-square uncertainties associated with the motion correction are 0.03 and 0.006 m s 1 for the horizontal and vertical wind, respectively, for all runs analyzed. The mean uncertainty in the wind stress due to motion correction is 8 10 4 Nm 2 . In a shallow coastal sea setting, ship motion appears to almost always be successfully detected and removed from the vertical component of the observed wind. The horizontal wind components appear to be successfully corrected in 86% of the runs analyzed. Motion correction is shown to have a significant influence on the covariance-calculated wind stress. In approximately half of the runs analyzed the wind stress changes by more than 15%. Motion correction has a smaller effect on the heat fluxes.