Results 31 to 40 of about 3,280,097 (317)

Autonomous Vehicle Dynamic Model-Based Navigation for Small UAVs

open access: yes, 2016
This paper presents a novel approach to autonomous navigation for small UAVs, with no extra sensor added to the conventional INS/GNSS setup. The proposed method significantly increases the accuracy and reliability of autonomous navigation, especially for
Skaloud, Jan, Khaghani, Mehran
core   +1 more source

Harmonised Portrayal of e-Navigation-related Information [PDF]

open access: yes, 2013
A Guideline on the Harmonised Portrayal of e-Navigation-related Information was recently completed by IALA. The purpose of this Guideline is to provide guidance regarding the presentation and display of e-Navigation-related information.
Porathe, Thomas   +8 more
core   +2 more sources

A survey on terrain based navigation for AUVs [PDF]

open access: yes, 2010
Terrain Based Navigation (TBN) is a method rootedto the early cruise missile navigation systems, when GPS wasnot yet available. For decades, TBN has been applied as acomplementary system to INS navigation for Unmanned AerialVehicles (UAV).
Petillot, Yvan   +10 more
core   +1 more source

Research on Centroid Localization Method of Underground Space Ground Electrode Current Field Based on RSSI

open access: yesSensors
Aiming to solve the problems of communication interruption caused by the collapse of underground space, this study constructs a strong penetration information transmission system and proposes a centroid localization method based on the received signal ...
Sirui Chu   +6 more
doaj   +1 more source

Research on Eigenvalue Analysis Method in Multi-Surface Metal Shell Vibratory Gyro

open access: yesIEEE Access, 2019
The metal shell vibratory gyro is a branch of Coriolis vibratory gyro, which has the advantage of overload resistance, simplify structure, low cost, wide range and long life. This paper focuses on multi-surface metal resonator.
Ning Liu, Zhong Su
doaj   +1 more source

Numerical analysis on fracture initiation from radial micro‐hole in anisotropy formation

open access: yesEnergy Science & Engineering, 2021
The radial jet drilling (RJD) technology is typically developed to open multiple lateral micro‐holes from a main wellbore to the formation. The multiple groups of 3D numerical models of radial micro‐holes through a main well are built by incorporating ...
Yumei Li   +5 more
doaj   +1 more source

Accurate Ovarian Cyst Classification With a Lightweight Deep Learning Model for Ultrasound Images

open access: yesIEEE Access, 2023
The ovarian cyst is a prevalent disease among women of childbearing age. Early detection of ovaries can effectively prevent the risk of large cysts leading to torsion, infertility, and even progression to ovarian cancer.
Junfang Fan   +4 more
doaj   +1 more source

Towards Real-Time Sensor-Based Path Planning in Highly Dynamic Environments

open access: yes, 2007
This paper presents work on sensor-based motion planning in initially unknown dynamic environments. Motion detection and probabilistic motion modeling are combined with a smooth navigation function to perform on-line path planning and replanning in ...
Björn Jensen   +5 more
core   +1 more source

Computing the entropy of user navigation in the web [PDF]

open access: yes, 2003
Navigation through the web, colloquially known as "surfing", is one of the main activities of users during web interaction. When users follow a navigation trail they often tend to get disoriented in terms of the goals of their original query and thus the
Levene, Mark, Loizou, George
core   +1 more source

Rail Digital Map Construction on GNSS Denied Areas

open access: yes, 2023
A Digital Map of the rail infrastructure in a key element to support the adoption of GNSS in railway signalling and satisfy the strict accuracy and integrity requirements even in the presence of feared events that may hinder the positioning solution.
D’Orazio, Francesca   +5 more
core   +1 more source

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