نتایج جستجو برای: rotated ukf r

تعداد نتایج: 455627  

2013
Seong Yun Cho Kyong-Ho Kim

© 2013 Munkhzul Enkhtur et al. 943 Instead of the extended Kalman filter, the unscented Kalman filter (UKF) has been used in nonlinear systems without initial accurate state estimates over the last decade because the UKF is robust against large initial estimation errors. However, in a multirate integrated system, such as an inertial navigation system (INS)/Global Positioning System (GPS) integr...

2016
Xiangyun Qing Hamid Reza Karimi Yugang Niu Xingyu Wang

A decentralized unscented Kalman filter (UKF) method based on a consensus algorithm for multi-area power system dynamic state estimation is presented in this paper. The overall system is split into a certain number of non-overlapping areas. Firstly, each area executes its own dynamic state estimation based on local measurements by using the UKF. Next, the consensus algorithm is required to perf...

2010
Peiling Cui Huijuan Zhang

In this paper, the problem of estimating the attitude of a micro-nano satellite, obtaining geomagnetic field measurements via a three-axis magnetometer and obtaining angle rate via gyro, is considered. For this application, a QMRPF-UKF master-slave filtering method is proposed, which uses the QMRPF and UKF algorithms to estimate the rotation quaternion and the gyro bias parameters, respectively...

2016
Nadine Löschmann Martin Michaelis Florian Rothweiler Yvonne Voges Barbora Balónová Barry A. Blight Jindrich Cinatl

The CDK inhibitor SNS-032 had previously exerted promising anti-neuroblastoma activity via CDK7 and 9 inhibition. ABCB1 expression was identified as major determinant of SNS-032 resistance. Here, we investigated the role of ABCB1 in acquired SNS-032 resistance. In contrast to ABCB1-expressing UKF-NB-3 sub-lines resistant to other ABCB1 substrates, SNS-032-adapted UKF-NB-3 (UKF-NB-3rSNS- 032300n...

2011
Marie Stiborová Jitka Poljaková Eva Martínková Lucie Bořek-Dohalská Tomáš Eckschlager Rene Kizek Eva Frei

Ellipticine is a potent antineoplastic agent exhibiting multiple mechanisms of action. This anticancer agent should be considered a pro-drug, whose pharmacological efficiency and/or genotoxic side effects are dependent on its cytochrome P450 (CYP)- and/or peroxidase-mediated activation to species forming covalent DNA adducts. Ellipticine can also act as an inhibitor or inducer of biotransformat...

2008
Xiangjun Tian Zhenghui Xie Aiguo Dai

[1] Many studies have shown the deficiencies of the extended Kalman filter (EKF), even though it has become a standard technique used in nonlinear estimation. In the EKF method, the state distribution is propagated analytically through the first-order linearization of the nonlinear system, which can introduce large errors in variable estimation and may lead to suboptimal performance and sometim...

2012
Juntong Qi Dalei Song Chong Wu Jianda Han Tianran Wang

A new adaptive Unscented Kalman Filter (UKF) algorithm for actuator failure estimation is proposed. A novel filter method with the ability to adapt to the statistical characteristics of noise is presented to improve the estimation accuracy of traditional UKFs. A new algorithm (Kalman Filter (KF) ‐based adaptive UKF), with the ability to adapt to the statistical characterist...

2017
Huan Zhou Hui Zhao Hanqiao Huang Xin Zhao

Aimed at solving the problem of decreased filtering precision while maneuvering target tracking caused by non-Gaussian distribution and sensor faults, we developed an efficient interacting multiple model–unscented Kalman filter (IMM-UKF) algorithm. By dividing the IMM-UKF into two links, the algorithm introduces the cubature principle to approximate the probability density of the random variabl...

با توجه به گسترش روز افزون استفاده از تصویربرداری فراصوت در سیستم‌های راهبری جراحی کبد، داشتن فرآیند انطباق بین تصاویر قیل و حین جراحی که از دقت و زمان کافی برخوردار باشد امری اجتناب ناپذیر است. با وجود استفاده گسترده از الگوریتم تکراری نزدیکترین نقاط1 در روش‌های انطباق مبتنی بر ویژگی، عملکرد آن به نویز، داده‌های اضافی وو انطباق اولیه حساس است. الگوریتم انطباق مبتنی بر کالمن 2</...

2013
M. Majeed Indra Narayan Kar

Purpose – The purpose of this paper is to estimate aerodynamic parameters accurately from flight data in the presence of unknown noise characteristics. Design/methodology/approach – The introduced adaptive filter scheme is composed of two parallel UKFs. At every time-step, the master UKF estimates the states and parameters using the noise covariance obtained by the slave UKF, while the slave UK...

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