Results 41 to 50 of about 1,988 (194)

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

open access: yesJournal of Field Robotics, EarlyView.
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   +3 more
wiley   +1 more source

A Robust Nonlinear Observer for Real-Time Attitude Estimation Using Low-Cost MEMS Inertial Sensors

open access: yesSensors, 2013
This paper deals with the attitude estimation of a rigid body equipped with angular velocity sensors and reference vector sensors. A quaternion-based nonlinear observer is proposed in order to fuse all information sources and to obtain an accurate ...
Lizeth Torres   +4 more
doaj   +1 more source

Linear System Identification and Control of a Low‐Cost High‐Performance Omnidirectional Marine Surface Vehicle for Swarming Applications

open access: yesJournal of Field Robotics, EarlyView.
ABSTRACT Marine operations traditionally rely on human intervention, a costly and disruptive method. Autonomous surface vehicles (ASVs) offer a powerful alternative, capable of operating autonomously, for extended periods, and with various sensors for various missions.
Ayman El Qemmah   +4 more
wiley   +1 more source

Python Attitude Heading and Reference System [PDF]

open access: yes, 2014
Included is a python based attitude heading and reference system (AHRS). This software can read flight data and compute the three dimensional AHRS solution.Taylor, Brian. (2014). Python Attitude Heading and Reference System.
Taylor, Brian
core  

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

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   +1 more source

An enhanced fuzzy H estimator applied to low‐cost attitude‐heading reference system [PDF]

open access: yes, 2011
PurposeThe purpose of this paper is to consider the process of design and implementation of an enhanced fuzzy H∞ (EFH∞) estimation algorithm to determine the attitude and heading angles of ground vehicles, which are frequently affected by considerable ...
Jafar Keighobadi   +2 more
core   +1 more source

Multi-Sensor Attitude and Heading Reference System Design Using Genetically Optimized Kalman Filter [PDF]

open access: yes, 2018
Attitude and Heading Reference System (AHRS) is a self-contained sensors assembly that can estimate full 3D orientation of an object. The AHRS system model involves integration of angular rate measurements from gyroscope which are fused with absolute ...
Gessesse, Meron Habtamu
core   +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

open access: yesBasin 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   +5 more
wiley   +1 more source

Exploiting Attitude Sensing in Vision-Based Navigation for an Airship

open access: yesJournal 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

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

open access: yesSensors, 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   +4 more
doaj   +1 more source

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