Results 131 to 140 of about 64,798 (259)
UAVs unveil the role of small scale vegetation structure on wader nest survival
Remote Sensing in Ecology and Conservation, EarlyView.In this study, we combine high‐resolution vegetation structural metrics derived from unmanned aerial vehicle (UAV) imagery with on‐field wader nest survival monitoring. We show that the immediate vegetation height and heterogeneity within a 2‐meter buffer surrounding the clutch of the recorded ground‐nesting wader species positively influenced its ...
Miguel Silva‐Monteiro +5 more
wiley +1 more source
Sučasnì Informacìjnì Tehnologìï u Sferì Bezpeki ta Oboroni, 2018 A refinement of the current image model has been accomplished, which are formed by separate channels of the combined correlation-extreme navigation system depending on the spatial position of the unmanned aerial vehicle and its changes.
Oleg M. Vorobiov +2 more
doaj
Unmanned systems to evaluate the Martian environment Condensed summary report [PDF]
Systems design for unmanned space mission to evaluate Mars ...
Boobar, M. G., Landstrom, W. G.
core +1 more source
Remote Sensing in Ecology and Conservation, EarlyView.Targeted conservation measures are contingent on robust knowledge of spatio‐temporal animal distribution in areas of interest. We explore unmanned aerial vehicle (UAV) transect monitoring as a novel method for standardized digital aerial surveys of marine megafauna by investigating the fine‐resolution spatio‐temporal distribution of harbour porpoises ...
Dinah Hartmann +2 more
wiley +1 more source
Study of Unmanned Systems to Evaluate the Martian Environment. Volume IV - Summary [PDF]
Unmanned space mission to determine Martian environmental factors influencing design of systems for manned space mission to Mars - summary ...
Dergarabedian, P., Sohn, R. L.
core +1 more source
Applications of inverse simulation to a nonlinear model of an underwater vehicle [PDF]
, 2008 Inverse simulation provides an important alternative to conventional simulation and to more formal mathematical techniques of model inversion. The application of inverse simulation methods to a nonlinear dynamic model of an unmanned underwater ...
Lu, L., McGookin, E., Murray-Smith, D.
core
Remote Sensing in Ecology and Conservation, EarlyView.The single‐scan approach to terrestrial laser scanning (TLS) and the self‐terrain‐normalized form of drone‐based digital aerial photogrammetry (DAP) offer practical options for rapid assessment of the vegetation structure in tropical landscapes.
Magnus Onyiriagwu +7 more
wiley +1 more source
Fixed-Time Path-Following-Based Underactuated Unmanned Surface Vehicle Dynamic Positioning Control
Journal of Marine Science and EngineeringThe development of dynamic positioning (DP) algorithms for an unmanned surface vehicle (USV) is attracting great interest, especially in support of complex missions such as sea rescue.
Shuai Zheng +4 more
doaj +1 more source
Adaptive Fast Non-Singular Terminal Sliding Mode Path Following Control for an Underactuated Unmanned Surface Vehicle with Uncertainties and Unknown Disturbances. [PDF]
Sensors (Basel), 2021 Fan Y, Liu B, Wang G, Mu D.
europepmc +1 more source
Autonomy for Unmanned Surface Vehicle
, 2018 Autonomous navigation has been successfully presented and developed both on ground and air. Though, autonomy on maritime surface vehicles has proven to be more challenging. In order to have an Autonomous Surface Vehicle (ASV), it ought to have a completely functional Guidance, Navigation and Control (GNC) system.This work presents part of the GNC ...
openaire +1 more source