Results 61 to 70 of about 31,296 (216)

A Multisensor Remote Sensing Approach to Archaeological Prospection: Integrating UAV and Google Earth Data in the Bayan Gol Valley, Mongolia

open access: yesArchaeological Prospection, EarlyView.
ABSTRACT This study investigates the effectiveness of drone‐based remote sensing and Google Earth satellite imagery for archaeological prospection in the Bayan Gol Valley, Central Mongolia. Utilizing a fixed‐wing unmanned aerial vehicle (UAV) equipped with RGB and multispectral sensors, we surveyed 655 ha to document Mongol‐period settlement structures
Peter Heimermann   +4 more
wiley   +1 more source

Galileo and EGNOS as an asset for UTM safety and security [PDF]

open access: yes, 2019
GAUSS (Galileo-EGNOS as an Asset for UTM Safety and Security) is a H2020 project1 that aims at designing and developing high performance positioning systems for drones within the U-Space framework focusing on UAS (Unmanned Aircraft System) VLL (Very Low ...
Andrade-Cetto, Juan   +7 more
core  

The spread of non‐native species

open access: yesBiological Reviews, EarlyView.
ABSTRACT The global redistribution of species through human agency is one of the defining ecological signatures of the Anthropocene, with biological invasions reshaping biodiversity patterns, ecosystem processes and services, and species interactions globally.
Phillip J. Haubrock   +16 more
wiley   +1 more source

On Rendering Synthetic Images for Training an Object Detector [PDF]

open access: yes, 2014
We propose a novel approach to synthesizing images that are effective for training object detectors. Starting from a small set of real images, our algorithm estimates the rendering parameters required to synthesize similar images given a coarse 3D model ...
Fua, Pascal   +2 more
core   +3 more sources

Mapping Buried Steel Flowlines Using Geophysical Sensors on Small Drone Aircraft

open access: yesSPE Annual Technical Conference and Exhibition, 2020
Abstract This study evaluated magnetic surveys using small unmanned aerial systems (sUAS) for the mapping of small diameter, buried pipelines, particularly flowlines. The study found that 2-inch diameter, steel pipelines buried 3-ft. deep can be confidently mapped by a total field, atomic magnetometer flown at 8 m above ground level, the
Richard Hammack   +5 more
openaire   +2 more sources

HyLPD Digital Twin Control for UAV Stability in High‐Wind Conditions

open access: yesOptimal Control Applications and Methods, EarlyView.
This work introduces a novel HyLPD, a hybrid control framework combining Linear Quadratic Regulator (LQR) for baseline stability and Deep Deterministic Policy Gradient (DDPG) for adaptive compensation, tailored for UAVs under high‐wind conditions.
Cara Rose   +2 more
wiley   +1 more source

Experiences with the design and implementation of flutter suppression systems [PDF]

open access: yes, 1984
Research efforts aim at flutter suppression are discussed. The application of active controls technology to reduce the aeroelastic response of aircraft structures is discussed.
Abel, I., Newsom, J. R.
core   +1 more source

Artificial Intelligence, International Competition, and the Balance of Power (May 2018) [PDF]

open access: yes, 2018
World leaders, CEOs, and academics have suggested that a revolution in artificial intelligence is upon us. Are they right, and what will advances in artificial intelligence mean for international competition and the balance of power?
Horowitz, Michael C.
core   +1 more source

Risk Times in Mission‐Oriented Systems

open access: yesQuality and Reliability Engineering International, EarlyView.
ABSTRACT This article assesses risk times in mission‐oriented systems with high safety standards. We examine critical times under two safety policies. The first requires that the system's reliability function, known the first failure of the components, must exceed a reliability level throughout the mission.
Antonio Arriaza   +2 more
wiley   +1 more source

The dawn of the age of the drones: an Australian privacy law perspective [PDF]

open access: yes, 2014
Examines Australia\u27s privacy laws in relation to unmanned aerial vehicles, to identify deficiencies that may need to be addressed. Introduction Suppose a homeowner habitually enjoys sunbathing in his or her backyard, protected by a high fence ...
Des Butler
core   +2 more sources

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