Results 91 to 100 of about 70,135 (188)

Technical Note on the Dynamic Changes in Kalman Gain when Updating Hydrodynamic Urban Drainage Models

open access: yesGeosciences, 2018
To prevent online models diverging from reality they need to be updated to current conditions using observations and data assimilation techniques. A way of doing this for distributed hydrodynamic urban drainage models is to use the Ensemble Kalman Filter
Morten Borup   +3 more
doaj   +1 more source

Optimally (Distributional-)Robust Kalman Filtering

open access: yes, 2010
We present optimality results for robust Kalman filtering where robustness is understood in a distributional sense, i.e.; we enlarge the distribution assumptions made in the ideal model by suitable neighborhoods. This allows for outliers which in our context may be system-endogenous or -exogenous, which induces the somewhat conflicting goals of ...
openaire   +2 more sources

Distributed Widely Linear Complex Kalman Filtering

open access: yes, 2013
We introduce cooperative sequential state space estimation in the domain of augmented complex statistics, whereby nodes in a network collaborate locally to estimate noncircular complex signals. For rigour, a distributed augmented (widely linear) complex Kalman filter (D-ACKF) suited to the generality of complex signals is introduced, allowing for ...
Dini, Dahir H.   +2 more
openaire   +2 more sources

Robust Estimation Fusion in Wireless Senor Networks with Outliers and Correlated Noises

open access: yesInternational Journal of Distributed Sensor Networks, 2014
This paper addresses the problem of estimation fusion in a distributed wireless sensor network (WSN) under the following conditions: (i) sensor noises are contaminated by outliers or gross errors; (ii) process noise and sensor noises are correlated; (iii)
Yan Zhou   +3 more
doaj   +1 more source

Characterizing Curvilinear Features Using the Localized Normal-Score Ensemble Kalman Filter

open access: yesAbstract and Applied Analysis, 2012
The localized normal-score ensemble Kalman filter is shown to work for the characterization of non-multi-Gaussian distributed hydraulic conductivities by assimilating state observation data.
Haiyan Zhou   +2 more
doaj   +1 more source

A novel approach for estimating hydraulic conductivity of non-Gaussian aquifer

open access: yesShuiwen dizhi gongcheng dizhi
The ensemble Kalman filter (EnKF) is one of the most widely used data assimilation methods. However, it exhibits limitations in handling non-Gaussian problems.
Meng SUN   +5 more
doaj   +1 more source

Distributed Kalman Filtering Using Weighted Averaging

open access: yes, 2006
This paper addresses the problem of distributed Kalman filtering, with focus on limiting the required communication bandwidth. By distributed we refer to a scenario when all nodes in the network desire an estimate of the full state of the observed system and there is no centralized computation center.
Alriksson, Peter, Rantzer, Anders
openaire   +1 more source

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