Results 11 to 20 of about 8,340 (295)

A New Perspective on Low-Cost MEMS-Based AHRS Determination [PDF]

open access: yesSensors, 2021
Attitude and heading reference system (AHRS) is the term used to describe a rigid body’s angular orientation in three-dimensional space. This paper describes an AHRS determination and control system developed for navigation systems by integrating ...
Neda Navidi, Rene Landry
doaj   +2 more sources

A dynamic adaptive AHRS algorithm for UAV based on SVDCKF [PDF]

open access: yesXibei Gongye Daxue Xuebao, 2021
Aiming at the attitude solution accuracy and robustness for small UAVs in complex flight conditions, this paper proposes a dynamic adaptive attitude and heading systems(AHRS) estimator with singular value decomposition Cubature Kalman filter(SVDCKF ...

doaj   +4 more sources

Attitude Calculation of AHRS Based on Geomagnetic Field Adaptive Correction [PDF]

open access: yesXibei Gongye Daxue Xuebao, 2019
In the attitude and heading reference system (AHRS), the output noise of MEMS gyroscope is too large, zero drift can not be eliminated completely, and the output of angular rate is easy to be interfered, which leads to low accuracy and large accumulated ...

doaj   +4 more sources

Design and Implementation of an AHRS Based on MEMS Sensors and Complementary Filtering [PDF]

open access: yesAdvances in Mechanical Engineering, 2014
This paper presents design and implementation of an attitude and heading reference system (AHRS) based on low-cost MEMS sensors and complementary filtering (CF).
Yangzhu Wang, Ning Li, Xi Chen, Miao Liu
doaj   +2 more sources

Quaternion-Based Kalman Filter for AHRS Using an Adaptive-Step Gradient Descent Algorithm [PDF]

open access: yesInternational Journal of Advanced Robotic Systems, 2015
This paper presents a quaternion-based Kalman filter for real-time estimation of the orientation of a quadrotor. Quaternions are used to represent rotation relationship between navigation frame and body frame.
Li Wang, Zheng Zhang, Ping Sun
doaj   +2 more sources

Adaptive UAV Navigation Method Based on AHRS [PDF]

open access: yesSensors
To address the inaccuracy of the Constant Acceleration/Constant Velocity (CA/CV) model as the state equation in describing the relative motion state in UAV relative navigation, an adaptive UAV relative navigation method is proposed, which is based on the
Yin Lu, Zhipeng Li, Jun Xiong, Ke Lv
doaj   +2 more sources

The Landscape of AhR Regulators and Coregulators to Fine-Tune AhR Functions [PDF]

open access: yesInternational Journal of Molecular Sciences, 2021
The aryl-hydrocarbon receptor (AhR) is a ligand-activated transcription factor that mediates numerous cellular responses. Originally investigated in toxicology because of its ability to bind environmental contaminants, AhR has attracted enormous attention in the field of immunology in the last 20 years.
Marco Gargaro   +5 more
openaire   +2 more sources

Inertial measures of motion for clinical biomechanics: comparative assessment of accuracy under controlled conditions - effect of velocity. [PDF]

open access: yesPLoS ONE, 2013
Inertial measurement of motion with Attitude and Heading Reference Systems (AHRS) is emerging as an alternative to 3D motion capture systems in biomechanics.
Karina Lebel   +3 more
doaj   +1 more source

Differences between adiposity indicators for predicting all-cause mortality in a representative sample of United States non-elderly adults. [PDF]

open access: yesPLoS ONE, 2012
BACKGROUND: Adiposity predicts health outcomes, but this relationship could depend on population characteristics and adiposity indicator employed. In a representative sample of 11,437 US adults (National Health and Nutrition Examination Survey, 1988-1994,
Henry S Kahn   +3 more
doaj   +1 more source

AHRS Accuracy Assessment Protocol. [PDF]

open access: yes, 2015
AHRS Accuracy Assessment Protocol.
Karina Lebel (486930)   +3 more
core   +1 more source

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