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An improved quadrature nonlinear filter named delayed Genz–Keister sequences-based sparse-grid quadrature filter (DGKSGQF) is developed for the target tracking problems. The filter changes the non-nested Gaussian quadrature points of the quadrature filters to the nested Genz–Keister points for selecting the unvariate points, which are the basis point sets extended to form a multidimensional grid using...
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