Results 31 to 40 of about 3,435,907 (207)

Variance-Constrained Multiobjective Control and Filtering for Nonlinear Stochastic Systems: A Survey

open access: yesAbstract and Applied Analysis, 2013
The multiobjective control and filtering problems for nonlinear stochastic systems with variance constraints are surveyed. First, the concepts of nonlinear stochastic systems are recalled along with the introduction of some recent advances.
Lifeng Ma   +3 more
doaj   +1 more source

On nonlinear filter generators [PDF]

open access: yes, 1997
In this paper the bits in a linear feedback shift register are treated as if they were independent random variables. A necessary condition for filter functions which result in independent random output bits is given. An example shows that the sufficient condition given by Golic in [2] is not necessary.
openaire   +1 more source

Coupling Techniques for Nonlinear Ensemble Filtering [PDF]

open access: yesSIAM Review, 2019
We consider filtering in high-dimensional non-Gaussian state-space models with intractable transition kernels, nonlinear and possibly chaotic dynamics, and sparse observations in space and time.
A. Spantini, R. Baptista, Y. Marzouk
semanticscholar   +1 more source

Second Harmonic Modulation for Ultrasonic Signals Based on the Design of the Phononic Crystal Filter

open access: yesSensors, 2023
Nonlinear ultrasonic non-destructive testing (NDT) is a widely used method for detecting micro-damages in various materials and structures due to its high sensitivity and directional capability.
Yue Zhu, Youxuan Zhao, Peng Cao
doaj   +1 more source

Nonfragile Quantized $H_\infty$ Filtering for Discrete-Time Switched T–S Fuzzy Systems With Local Nonlinear Models

open access: yesIEEE transactions on fuzzy systems, 2020
This article addresses the $H_\infty$ filtering problem for a class of discrete-time nonlinear switched systems. Every subsystem of the considered nonlinear-switched systems is represented by the Takagi–Sugeno fuzzy systems with local nonlinear models ...
Qunxian Zheng   +2 more
semanticscholar   +1 more source

Infrared small target detection method based on nonlinear local filter

open access: yes工程科学学报, 2016
In order to improve the efficiency of infrared small target detection against complex background, the image was decomposed into three regions flat region, edge region and small target region.
ZHAO Ai-gang   +4 more
doaj   +1 more source

Experimental Investigation of Angular Stackgram Filtering for Noise Reduction of SPECT Projection Data: Study with Linear and Nonlinear Filters

open access: yesInternational Journal of Biomedical Imaging, 2007
We discuss data filtering prior to image reconstruction. For this kind of filtering, the radial direction of the sinogram is routinely employed. Recently, we have introduced an alternative approach to sinogram data processing, exploiting the angular ...
Antti P. Happonen, Matti O. Koskinen
doaj   +1 more source

Information geometric nonlinear filtering [PDF]

open access: yesInfinite Dimensional Analysis, Quantum Probability and Related Topics, 2015
This paper develops information geometric representations for nonlinear filters in continuous time. The posterior distribution associated with an abstract nonlinear filtering problem is shown to satisfy a stochastic differential equation on a Hilbert information manifold. This supports the Fisher metric as a pseudo-Riemannian metric.
openaire   +4 more sources

Information Geometric Approach to Recursive Update in Nonlinear Filtering

open access: yesEntropy, 2017
The measurement update stage in the nonlinear filtering is considered in the viewpoint of information geometry, and the filtered state is considered as an optimization estimation in parameter space has been corresponded with the iteration in the ...
Yubo Li   +4 more
doaj   +1 more source

Stochastic Feedback Based Continuous-Discrete Cubature Kalman Filtering for Bearings-Only Tracking

open access: yesSensors, 2018
Bearings-only tracking only adopts measurements from angle sensors to realize target tracking, thus, the accuracy of the state prediction has a significant influence on the final results of filtering. There exist unpredictable approximation errors in the
Renke He   +4 more
doaj   +1 more source

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