Results 61 to 70 of about 3,068,607 (226)

THE PERFORMANCE ANALYSIS OF A UAV BASED MOBILE MAPPING SYSTEM [PDF]

The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2012
In order to facilitate applications such as environment detection or disaster monitoring, developing a quickly and low cost system to collect near real time spatial information is very important. Such a rapid spatial information collection capability has
M. L. Tsai, K. W. Chiang, Y. H. Tseng, J. Y. Rau, Y. W. Huang, C. F. Lo   +5 more
doaj   +1 more source

Deciphering the Palimpsest: Chronological Uncertainty and the Interpretation of Mining Landscapes at Písečný vrch (Czech Republic)

Archaeological Prospection, EarlyView.
ABSTRACT We investigated the Písečný vrch (Czech Republic), a site exploited for quartz mining in both prehistoric times and the 20th century. Due to their morphological similarity across all mining periods, the differentiation between pits with archaeological potential and recent ones is challenging.
Jan Fišer, Petr Krištuf, Jan Kropáček, Vojtěch Barták, Lenka Starková, Vítězslav Moudrý   +5 more
wiley   +1 more source

Direct Georeferencing of a Pushbroom, Lightweight Hyperspectral System for Mini-UAV Applications [PDF]

Remote Sensing, 2018
Hyperspectral imagery has proven its potential in many research applications, especially in the field of environmental sciences. Currently, hyperspectral imaging is generally performed by satellite or aircraft platforms, but mini-UAV (Unmanned Aerial Vehicle) platforms (<20 kg) are now emerging.
Jaud, Marion, Le Dantec, Nicolas, Ammann, Jérôme, Grandjean, Philippe, Constantin, Dragos, Akhtman, Yosef, Barbieux, Kevin, Allemand, Pascal, Delacourt, Christophe, Merminod, Bertrand   +9 more
openaire   +7 more sources

Spatial variation and predictors of plant species' intrinsic climate sensitivity across the conterminous United States

Ecography, EarlyView.
Understanding how species' sensitivity to climate varies spatially across their ranges and elucidating the important causes is essential for identifying ecologically meaningful geographic units and conservation actions for biodiversity. In this study, we estimated climatic occurrence niches of vascular plants to explore the spatial variation in species'
Weiqing Qu, Ayla J. Skorupa, Jeffrey W. Matthews, Suneeti K. Jog, Jason T. Bried   +4 more
wiley   +1 more source

A PRECISE POSITION AND ATTITUDE DETERMINATION SYSTEM FOR LIGHTWEIGHT UNMANNED AERIAL VEHICLES [PDF]

The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2013
In many unmanned aerial vehicle (UAV) applications a direct georeferencing is required. The reason can be that the UAV flies autonomous and must be navigated precisely, or that the UAV performs a remote sensing operation, where the position of the ...
C. Eling, L. Klingbeil, M. Wieland, H. Kuhlmann   +3 more
doaj   +1 more source

Knowledge sourcing, geopolitics, and FDI: An empirical analysis on the US green and digital sectors

Global Strategy Journal, EarlyView.
Abstract Research Summary This paper examines how foreign direct investment (FDI) shapes firms' sourcing of knowledge in the digital and green domains under rising geopolitical frictions. We assemble a firm–country dyadic panel (2013–2020) linking US patent backward citations to firms' FDI, enriched with bilateral geopolitical distance and host‐country
Alberto Maria Radici
wiley   +1 more source

Comparison of Direct and Indirect Georeferencing Methods Using Satellite Linear Array Iimages [PDF]

فصلنامه علوم و فناوری فضایی, 2015
Comparison of direct and indirect methods for georeferencing of satellite linear array stereo images is proposed in this paper. In direct method, collinear condition and orbital elements are used for geolocation of pixels and ground control points (GCPs)
Ahmad Izadipour, Bhzad Akbari, Ali Reza Sharifi, Meysam Yousefzade   +3 more
doaj  

Calibration and Georeferencing for GNSS-Equipped Vehicle Video Mapping Using a Tesla Model Y [PDF]

The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences
The evolution of mapping platforms has followed a consistent pattern: professional instruments are complemented by consumer devices that trade precision for scalability.
R. Tamimi, C. Toth
doaj   +1 more source

Where were all the trees? Computer vision meets landscape history to unlock the potential of historical Ordnance Survey maps

People and Nature, EarlyView.
Abstract The first edition of the Ordnance Survey's 1:2500 County Series is marked with treed areas, such as woodlands and orchards, and, remarkably, freestanding trees. Consequently, it is an unparalleled source of information on the distribution of trees across Britain in the mid‐late nineteenth century, when the maps were first surveyed. In order to
Toby Pillatt, William A. P. Smith
wiley   +1 more source

Assessing the Performance of Different Direct-Georeferencing with Large Format Digital Cameras [PDF]

, 2014
This paper provides an independent investigation into the quality, performance and reliability of the Direct Georeferencing (using in-flight control GPS and IMU systems to measure the exterior orientation parameters) with the new photogrammetric digital ...
Qtaishat, Khaldoun S.
core   +1 more source