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Change Detection Using Wavelets in Solution Monitoring Data for Nuclear Safeguards

机译:在核保障措施解决方案监测数据中使用小波进行变化检测

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Wavelet analysis is known to be a good option for change detection in many contexts. Detecting changes in solution volumes that are measured with both additive and relative error is an important aspect of safeguards for facilities that process special nuclear material. This paper qualitatively compares wavelet-based change detection to a lag-one differencing option using realistic simulated solution volume data for which the true change points are known. We then show quantitatively that Haar wavelet-based change detection is effective for finding the approximate location of each change point, and that a simple piecewise linear optimization step is effective to refine the initial wavelet-based change point estimate.
机译:在许多情况下,小波分析是检测变化的好选择。检测用累加误差和相对误差测量的溶液体积变化是处理特殊核材料设施的保障措施的重要方面。本文使用已知真实变化点的真实模拟解决方案体积数据,将基于小波的变化检测与滞后一差分选项进行定性比较。然后,我们定量地表明,基于Haar小波的变化检测对于找到每个变化点的近似位置是有效的,并且简单的分段线性优化步骤可以有效地细化初始的基于小波的变化点估计。

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