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Robust Autonomous Flight in Constrained and Visually Degraded Environments [chapter]

Zheng Fang, Shichao Yang, Sezal Jain, Geetesh Dubey, Silvio Maeta, Stephan Roth, Sebastian Scherer, Yu Zhang, Stephen Nuske
2016 Springer Tracts in Advanced Robotics  
The environment is GPS-denied and visually degraded, containing narrow passageways, doorways and small objects protruding from the wall.  ...  This paper addresses the problem of autonomous navigation of a micro aerial vehicle (MAV) inside a constrained shipboard environment for inspection and damage assessment, which might be perilous or inaccessible  ...  The experiment is conducted in a constrained and visually degraded shipboard environment, which has a size of 16m × 25.6m × 4.04m.  ... 
doi:10.1007/978-3-319-27702-8_27 fatcat:n4cfvooq5bfizfusti2se4jkwm

Real-Time Monocular Vision System for UAV Autonomous Landing in Outdoor Low-Illumination Environments

Shanggang Lin, Lianwen Jin, Ziwei Chen
2021 Sensors  
Landing an unmanned aerial vehicle (UAV) autonomously and safely is a challenging task.  ...  Extensive evaluations have been conducted to demonstrate the robustness, accuracy, and real-time performance of the proposed vision system.  ...  Acknowledgments: The authors thank Tusheng Lin for his help in this study. Conflicts of Interest: The authors declare no conflict of interest.  ... 
doi:10.3390/s21186226 pmid:34577433 fatcat:6e2l5f2zvzdohmqfqw4nbgidcy

Smoke Sky – Exploring New Frontiers of Unmanned Aerial Systems for Wildland Fire Science and Applications [article]

E. Natasha Stavros, Ali Agha, Allen Sirota, Marco Quadrelli, Kamak Ebadi, Kyongsik Yun
2019 arXiv   pre-print
data and information system for active fire local environment mapping.  ...  Important to investing in these technologies will be in developing collaborations with the key influencers and champions for using UAS technology in fire management.  ...  in visual imaging, etc.).  ... 
arXiv:1911.08288v1 fatcat:zpzisq3bcjgojevgciqazkviee

Flight Control System Design Optimisation via Genetic Programming [chapter]

Anna Bourmistrova, Sergey Khantsis
2009 Aerial Vehicles  
Aerial Vehicles 130 www.intechopen.com Aerial Vehicles 132 attention in aviation industry in the late 1980s and 90s, aiming to control high performance fighters during high angle of attack manoeuvres (  ...  to questionable results in physical implementation with respect to incorrectly modelled dynamics.  ...  In addition, testing situations which cannot occur in practice are possible in the simulation environment. In this work, two main types of simulation tests are conducted -robustness and performance.  ... 
doi:10.5772/6470 fatcat:ygnmyoaqtzeftagds522b4xp3m

Helicopter Control During Landing on a Moving Confined Platform

S. Topczewski, J. Narkiewicz, P. Bibik
2020 IEEE Access  
The dynamic model of a single rotor helicopter with a control system, developed in the FLIGHTLAB environment, and validated against flight tests data, is used to investigate control efficiency.  ...  The simulations of approach and landing on a moving vessel in various environmental conditions confirmed the efficiency of the developed control methodology.  ...  Robust MPC methodology developed for highly constrained helicopter flights including discontinuous flight trajectories is also shown in [7] .  ... 
doi:10.1109/access.2020.3000294 fatcat:j2fyscqd3nfgnnfv3uarwe4sdm

On the Use of Robots and Vision Technologies for the Inspection of Vessels: a Survey on Recent Advances

Francisco Bonnin-Pascual, Alberto Ortiz
2019 Zenodo  
an improvement in the current visual inspection.  ...  vessels, and computer vision algorithms for the detection of cracks and / or corrosion in images.  ...  The entire framework is tested both inside their laboratory 368 and in a constrained shipboard environment.  ... 
doi:10.5281/zenodo.4253168 fatcat:g4hfbverjjhnxgpcpjp2m2nvbm

FIRe glider: Mapping in situ chlorophyll variable fluorescence with autonomous underwater gliders

Filipa Carvalho, Maxim Y. Gorbunov, Matthew J. Oliver, Christina Haskins, David Aragon, Josh T. Kohut, Oscar Schofield
2020 Limnology and Oceanography : Methods  
These physiological processes are difficult to sample in time and space over physiologically and ecologically relevant scales using traditional shipboard techniques.  ...  The integration of a fluorescence induction and relaxation (FIRe) sensor in a Slocum glider allows autonomous high-resolution and vertically-resolved measurements of photosynthetic physiological variables  ...  Acknowledgments The authors would like to thank Rutgers field team (in particular to Nicole Couto, Nicole Waite, Mike Brown, and Chip Haldeman), Palmer Station personnel and ARSV Laurence M.  ... 
doi:10.1002/lom3.10380 fatcat:ibll4mjkwfbnzcsho2gfkalns4

Defense Advanced Research Projects Agency (Darpa) Fiscal Year 2015 Budget Estimates

Department Of Defense Comptroller's Office
2014 Zenodo  
Included in this category is the National Center for Advancing Translational Sciences (NCATS) efforts to reengineer drug discovery and development in collaboration with industry, academia, the Food and  ...  advanced control and sensory functions.  ...  Title: Multifunction RF Description: The Multifunction RF (MFRF) program goal is to enable U.S. rotary wing aircraft forces to fight effectively in all forms of severely Degraded Visual Environments (DVE  ... 
doi:10.5281/zenodo.1215345 fatcat:fjzhmynqjbaafk67q2ckcblj2m

Global Distribution, Composition and Abundance of Marine Litter [chapter]

François Galgani, Georg Hanke, Thomas Maes
2015 Marine Anthropogenic Litter  
These enable the presence of accumulation areas in oceanic convergence zones and on the seafloor, notably in coastal canyons.  ...  Recent studies have demonstrated that pollution of microplastics, particles <5 mm, has spread at the surface of oceans, in the water column and in sediments, even in the deep sea.  ...  Open Access This chapter is distributed under the terms of the Creative Commons Attribution Noncommercial License, which permits any noncommercial use, distribution, and reproduction in any medium, provided  ... 
doi:10.1007/978-3-319-16510-3_2 fatcat:qgouian2kjdg5gp6qgbzs7zexa

2020 Index IEEE Transactions on Vehicular Technology Vol. 69

2020 IEEE Transactions on Vehicular Technology  
Revocable Data-Sharing Scheme in VANETs; TVT Dec. 2020 15933-15946 Hoseini, S.A., Ding, M., Hassan, M., and Chen, Y., Analyzing the Impact of Molecular Re-Radiation on the MIMO Capacity in High-Frequency  ...  + Check author entry for coauthors ami-mFading Channels With Integer and Non-Integerm; TVT March 2020 2785-2801 Hoang, T.M., Tran, X.N., Nguyen, B.C., and Dung, L.T., On the Performance of MIMO Full-Duplex  ...  Zhe, T., +, TVT May 2020 4907-4919 Robust and Autonomous Stereo Visual-Inertial Navigation for Non-Holonomic Mobile Robots.  ... 
doi:10.1109/tvt.2021.3055470 fatcat:536l4pgnufhixneoa3a3dibdma

Skin Sea-Surface Temperature from VIIRS on Suomi-NPP—NASA Continuity Retrievals

Peter J. Minnett, Katherine A. Kilpatrick, Guillermo P. Podestá, Robert H. Evans, Malgorzata D. Szczodrak, Miguel Angel Izaguirre, Elizabeth J. Williams, Susan Walsh, R. Michael Reynolds, Sean W. Bailey, Edward M. Armstrong, Jorge Vazquez-Cuervo
2020 Remote Sensing  
processes in the atmosphere and at the surface are discussed.  ...  The algorithms used to derive the SSTskin from the radiometric measurements are given in detail.  ...  Shipboard Radiometers-ISAR Another type of ship-board instrument, the Infrared Sea-surface temperature Autonomous Radiometer (ISAR) [79] also provides SSTskin for VIIRS validation.  ... 
doi:10.3390/rs12203369 fatcat:hfyanazhz5chxkzn7xuulp7u7e

The Sea-based Automated Launch and Recovery System Virtual Testbed

Colin Wilkinson, David Findlay, Kenny Boothe, Surjan Dogra
2014 AIAA Modeling and Simulation Technologies Conference   unpublished
the data needed, and completing and reviewing this collection of information.  ...  Public reporting burden for this collection of information is estimated to average 1 hour per response, including the time for reviewing instructions, searching existing data sources, gathering and maintaining  ...  This environment poses unique challenges due to deck motion, unsteady ship airwake, constrained space for safe operation, electromagnetic interference, severe weather, and degraded visual environments.  ... 
doi:10.2514/6.2014-0474 fatcat:lr2pio62fjg33akdgs2dyb6hym

Megafauna community assessment of polymetallic-nodule fields with cameras: platform and methodology comparison

Timm Schoening, Autun Purser, Daniel Langenkämper, Inken Suck, James Taylor, Daphne Cuvelier, Lidia Lins, Erik Simon-Lledó, Yann Marcon, Daniel O. B. Jones, Tim Nattkemper, Kevin Köser (+3 others)
2020 Biogeosciences  
When and if commercial exploitation of these marine resources commences, robust and verifiable standards which incorporate developing technological advances in camera-based monitoring surveys should be  ...  At the time of writing, key underwater imaging platforms commonly used to map seafloor fauna abundances are autonomous underwater vehicles (AUVs), remotely operated vehicles (ROVs) and towed camera "ocean  ...  In order to mitigate water and illumination effects otherwise dominant in the final mosaic, a robust statistical estimate of the illumination component was performed.  ... 
doi:10.5194/bg-17-3115-2020 fatcat:uaa67r54znaldcdpgnnbkchirm

PC-2 Winter Process Cruise (WPC)

Frank Nilsen, Ilker Fer, Till Martin Baumann, Øyvind Breivik, Cezlav Czyz, Lukas Frank, Kjersti Kalhagen, Zoé Koenig, Eivind H. Kolås, Stephan T. Kral, Bayoumi Mohamed A. Mabrouk, Tore Mo-Bjørkelund (+2 others)
2021 The Nansen Legacy Report Series  
The Winter Process Cruise (WPC) aboard RV Kronprins Haakon (KH2021702) conducted observations on processes that control the position and variability of the polar front in the Northern Barents Sea and the  ...  Moreover, the WPC serviced 2 gateway moorings sites (M1 and M4) and collected complementary hydrographic, microstructure and current profiles to detect the winter circulation pattern and the layering structures  ...  the northern Barents Sea, TC-1 on environmental variables measurements from reliable and robust sensor carrying platforms for autonomous detection of important variables (RFs 1-3) in the Barents Sea and  ... 
doi:10.7557/nlrs.6324 fatcat:fsudalp6rbasjidosukm5qlg4i

The Federal Radionavigation Plan

WILLIAM K. MAY
1981 Navigation  
For the most part, mariners practice conventional navigation, and employ a variety of shipboard and external systems such as GPS, DGPS, shipboard radar, visual aids to navigation, fathometers, paper and  ...  Because of the extensive backup network of visual aids to navigation and independent shipboard systems, vessels operating in the harbor entrance and approach and inland waterways could continue to operate  ...  Availability is a function of both the physical characteristics of the environment and the technical capabilities of the transmitter facilities.  ... 
doi:10.1002/j.2161-4296.1981.tb00771.x fatcat:uiqoj4rvxbb5znxcn3vu55lfsm
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