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A spatial-domain multiresolutional particle filter with thresholded wavelets

机译:具有阈值小波的空间域多分辨率粒子滤波器

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摘要

Particle filters have been proven to be very effective for nonlinearon-Gaussian filtering. However, the most notorious disadvantage of a particle filter is its formidable computational complexity, since hundreds (even thousands) of particles are usually needed to achieve a required approximation accuracy. It has also been proven that one of the techniques of truly solving a computational problem is multiresolutional processing, both in temporal and spatial domains. Therefore, in this paper we propose a multiresolutional particle filter in the spatial domain using thresholded wavelets to reduce significantly the number of particles, meanwhile maintaining the full strength of a particle filter.
机译:事实证明,粒子滤波器对于非线性/非高斯滤波非常有效。但是,粒子滤波器的最臭名昭著的缺点是其巨大的计算复杂性,因为通常需要数百(甚至数千)个粒子才能达到所需的逼近精度。还已经证明,真正解决计算问题的技术之一是在时域和空间域中的多分辨率处理。因此,在本文中,我们提出了一种在空间域中使用阈值小波的多分辨率粒子滤波器,以显着减少粒子数量,同时保持粒子滤波器的全部强度。

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