2017
DOI: 10.1186/s41445-017-0006-z
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Adaptive cubature Kalman filter based on the variance-covariance components estimation

Abstract: Although the Kalman filter (KF) is widely used in practice, its estimated results are optimal only when the system model is linear and the noise characteristics of the system are already exactly known. However, it is extremely difficult to satisfy such requirement since the uncertainty caused by the inertial instrument and the external environment, for instance, in the aided inertial navigation. In practice almost all of the systems are nonlinear. So the nonlinear filter and the adaptive filter should be consi… Show more

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Cited by 10 publications
(5 citation statements)
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“…It assumes that the predictive density of the combined state measurement follows a Gaussian distribution. The CKF employs the third-degree spherical-radial cubature rule to numerically compute integrals, scaling points linearly with the state vector dimension [ 15 ]. It effectively addresses complex nonlinear problems with high dimensions [ 26 ].…”
Section: Cubature Kalman Filter With Missing Measurementsmentioning
confidence: 99%
See 1 more Smart Citation
“…It assumes that the predictive density of the combined state measurement follows a Gaussian distribution. The CKF employs the third-degree spherical-radial cubature rule to numerically compute integrals, scaling points linearly with the state vector dimension [ 15 ]. It effectively addresses complex nonlinear problems with high dimensions [ 26 ].…”
Section: Cubature Kalman Filter With Missing Measurementsmentioning
confidence: 99%
“…The CKF utilizes a third-degree cubature rule and offers advantages such as reduced parameters [ 11 , 12 ], improved stability, and accuracy compared to the UKF [ 13 , 14 ]. It is widely used to handle nonlinear problems [ 15 ], but applying the CKF to a nonlinear system requires knowledge of the mathematical model and noise statistics, which can be challenging to obtain in practical applications [ 16 ].…”
Section: Introductionmentioning
confidence: 99%
“…Zhang et al [19] have proposed a novel adaptive filter based on a nonlinear cubature Kalman filter and an estimate of variance-covariance components (VCE). Cubature Kalman filter was used to solve nonlinearity, but VCE was used for the nonlinear system's real-time estimation noise correlation matrix.…”
Section: Literature Reviewmentioning
confidence: 99%
“…The Kalman filter has become one of the most widely used recursive methods that estimate the states of a process. 9 If the system, observation model, input and measurement values, and the observation noise covariance matrix N (t) are known, the Kalman filter produces an optimal solution. In practice, the a priori N (t) is unknown or approximated by applying the best available knowledge.…”
Section: Adaptive Kalman Filtermentioning
confidence: 99%