Ocean Current Inference Using Towed Cable Hydrodynamics
Ocean Current Inference Using Towed Cable Hydrodynamics
复制标题
使用拖缆流体动力学进行洋流推断
DOI：
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发表时间：
2012
期刊：
影响因子：
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通讯作者：
Esklid Storteig
中科院分区：
文献类型：
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作者：
N. Polydorides;Esklid Storteig
我们考虑了从定位和张力测量中实时估计拖曳阵列上的海流剖面的问题。这个不适定的反问题是在贝叶斯统计的背景下使用最大后验估计来处理的。利用与广义Tikhonov公式的类比，我们实现了一种优化正则化的有效算法，并随后推导出估计电流的置信度区间。然后，我们讨论了基于估计的海速重建迎角剖面的问题，并提出了一种随机模拟算法来评估它。为了验证我们的方法的性能，给出了一些模拟实验的结果。
We consider the problem of estimating in real time the profile of ocean currents on towed arrays from positioning and tension measurements. This ill-posed inverse problem is addressed in the context of Bayesian statistics using maximum a posteriori estimation. Drawing the analogies to the generalized Tikhonov formulation, we implement an efficient algorithm that optimizes regularization and, subsequently, derive confidence intervals on the estimated currents. We then address the problem of reconstructing the profile of the angle of attack on the basis of the estimated ocean velocities and propose a stochastic simulation algorithm to evaluate it. To demonstrate the performance of our methods, some results from simulated experiments are presented.