Results 31 to 40 of about 454 (139)

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

International 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   +1 more source

Established and Emerging Biomarkers to Characterize Persons at Risk for Obesity—Paving the Way for Targeted Clinical Intervention Trials—A Comprehensive Position Paper

Obesity Reviews, EarlyView.
ABSTRACT Despite all efforts, obesity remains a major health concern worldwide, with continuously increasing rates, affecting approx. 14% of the total world population, being as high as 43% in some countries. As obesity is related to numerous comorbidities, including type 2 diabetes, cardiovascular diseases, and some types of cancer, the consequences ...
Farhad Vahid, Victoria Stopa, Laurent Malisoux, Yvan Devaux, Elsa Lamy, Fernando Capela e Silva, Sarah Forberger, Tiziana de Magistris, Antoni Sureda, Margalida Monserrat‐Mesquida, Maria Pérez‐Jiménez, Rajini Nagrani, Maria Giovanna Onorati, Michele Filippo Fontefrancesco, Jonathan Turner, Mahesh S. Desai, Josep Tur, Cristina Bouzas, Gino Gabriel Bonetti, Oliver Riedel, Gitte Ravn‐Haren, Rikke Andersen, Torsten Bohn   +22 more
wiley   +1 more source

Development of a reliable adaptive estimation approach for a low‐cost attitude and heading reference system

IET Radar, Sonar & Navigation
A main challenge within inertial navigation systems involves attitude determination, which refers to the process of estimating the angles that define orientations.
Elahe Sadat Abdolkarimi, Sadra Rafatnia
doaj   +1 more source

Redefining Optimal Coverage Path Planning for FLS‐Equipped AUVs With Deep Reinforcement Learning

Journal of Field Robotics, Volume 43, Issue 6, Page 3617-3632, September 2026.
ABSTRACT Autonomous Underwater Vehicles (AUVs) have emerged as indispensable tools for a variety of subsea tasks, from habitat monitoring and seabed mapping to infrastructure inspection and mine countermeasures. A fundamental challenge in this field is Coverage Path Planning (CPP), the problem of ensuring complete and efficient area coverage.
Lorenzo Cecchi, Alberto Topini, Alessandro Bucci, Alessandro Ridolfi   +3 more
wiley   +1 more source

Update of the risk assessment on emerging and novel brominated flame retardants in food

EFSA Journal, Volume 24, Issue 7, July 2026.
Abstract The European Commission asked EFSA to update its 2012 risk assessment on Emerging and Novel brominated flame retardants (BFRs) in food. Since the previous Opinion, further information was collected for a total of 27 BFRs. The CONTAM Panel concluded that TDBPP, DBPNG and TBNPA are considered genotoxic and carcinogenic.
EFSA Panel on Contaminants in the Food Chain (CONTAM), Helle Katrine Knutsen, Agneta Åkesson, Vasileios Bampidis, Margherita Bignami, Laurent Bodin, James Kevin Chipman, Gisela Degen, Antonio Hernández‐Jerez, Tim Hofer, Christer Hogstrand, Stefano Landi, Jean‐Charles Leblanc, Kyriaki Machera, Evangelia Ntzani, Isabelle P. Oswald, Guido Rychen, Salomon Sand, Katharina Vejdovszky, Barbara Viviani, Emilio Benfenati, Diane Benford, Andy Hart, Martin Rose, Henri Schroeder, Christiane Vleminckx, Martine Vrijheid, Edoardo Carnesecchi, Violetta Costanzo, Andrea Gissi, Eirini Kouloura, Luisa Ramos Bordajandi, Francesca Riolo, Christer Hogstrand   +33 more
wiley   +1 more source

A Novel Vehicle Stationary Detection Utilizing Map Matching and IMU Sensors

The Scientific World Journal, 2014
Precise navigation is a vital need for many modern vehicular applications. The global positioning system (GPS) cannot provide continuous navigation information in urban areas.
Md. Syedul Amin, Mamun Bin Ibne Reaz, Salwa Sheikh Nasir, Mohammad Arif Sobhan Bhuiyan, Mohd. Alauddin Mohd. Ali   +4 more
doaj   +1 more source

A Nonlinear Double Model for Multisensor-Integrated Navigation Using the Federated EKF Algorithm for Small UAVs

Sensors, 2020
Aimed at improving upon the disadvantages of the single centralized Kalman filter for integrated navigation, including its fragile robustness and low solution accuracy, a nonlinear double model based on the improved decentralized federated extended ...
Yue Yang, Xiaoxiong Liu, Weiguo Zhang, Xuhang Liu, Yicong Guo   +4 more
doaj   +1 more source

Exploiting Attitude Sensing in Vision-Based Navigation for an Airship

Journal of Robotics, 2009
An Attitude Heading Reference System (AHRS) is used to compensate for rotational motion, facilitating vision-based navigation above smooth terrain by generating virtual images to simulate pure translation movement.
Luiz G. B. Mirisola, Jorge Dias
doaj   +1 more source

The Unscented Kalman Filter With Reduced Computation Time for Estimating the Attitude of the Attitude and Heading Reference System

IEEE Journal of Indoor and Seamless Positioning and Navigation
The algorithms of the Kalman filters have been used in many papers on the Pedestrian Dead Reckoning (PDR) and attitude estimation for the attitude and heading reference system (AHRS).
Shunsei Yamagishi, Lei Jing
doaj   +1 more source

Type of Carbonate Production, Sedimentary and Tectonic Evolution of the Pliocene Mixed Carbonate Siliciclastic Unit (Macco) in the Tarquinia Basin, Central Italy

Basin Research, Volume 38, Issue 3, May–June 2026.
Piacenzian mixed carbonate‐siliciclastic succession (‘Macco’ unit) deposited on the passive margin of the Tyrrhenian back‐arc basin. Sedimentation was controlled by syn‐sedimentary tectonics, with NW–SE first‐order faults (3–4 km) creating accommodation space and NE–SW second‐order faults (~0.5 km) influencing facies distribution and growth structures.
Marco Brandano, Sara Ronca, Alessandro Mancini, Fabrizio Lirer, Antonio Cascella, Giovanni Luca Cardello   +5 more
wiley   +1 more source