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Regularized cubic B-spline approximation for processing laser Doppleranemometry data,

机译:用于处理激光多普勒血流仪数据的正则三次B样条近似值,

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Abstract: We consider the application of Tikhonov type regularization methods for computing a cubic spline approximation to the solution of a particular Fredholm integral equation of the first kind which arises in laser Doppler anemometry experiments. The method of generalized cross validation is used to calculate an unbiased estimate to the value of the regularization parameter controlling the trade-off between the smoothness of the approximation and the fidelity of the tranformed approximation to the data, which are assumed to be contaminated by 'white noise' error. Numerical results are presented, for zero order regularization on simulated laser anemometry data, which demonstrate that the success of the method is dependent on the positioning of the knots of the spline. Proposed extensions to this work are discussed, which include techniques for incorporating cross validation with higher orders of regularization and the addition of an automatic knot selection algorithm. !16
机译:摘要:我们考虑Tikhonov型正则化方法在激光多普勒风速实验中产生的特定Fredholm整体方程的解决方案中的立方样条逼近。广义交叉验证的方法用于计算对控制近似度的平滑度和对数据的平滑近似的平滑度之间的正则化参数的值的无偏见估计,并且假设被假定被“白噪声错误。呈现数值结果,对于模拟激光风速数据上的零阶正则化,这表明该方法的成功取决于花键的结的定位。讨论了对该工作的提出的延伸,包括用于将交叉验证的技术与较高的正则化订单和添加自动结选择算法结合到技术。 !16

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