Results 31 to 40 of about 1,671 (165)
Geoid model validation and topographic bias
Journal of Geodetic Science, 2022 Recently a number of geoid campaigns were performed to verify different types of geoid and quasigeoid modeling techniques. Typically, GNSS-leveling was employed as an independent method, but in some cases zenith camera astronomic deflection data were ...
Sjöberg Lars E.
doaj +1 more source
Remote Sensing Upside Down: Exploring the Potential of Ground-Based Multispectral Cameras for Tree Crown Monitoring [PDF]
The International Archives of the Photogrammetry, Remote Sensing and Spatial Information SciencesRecent advancements in remote sensing have enabled increasingly detailed analysis of forest canopies using a range of platforms, from satellites to ground-based systems.
M. Goebel +3 more
doaj +1 more source
OryxPopulation estimates of abundance and density are key metrics to evaluate the conservation status of wild felids and inform conservation actions. Individual identification of wild felids with camera traps has been carried out mostly for large and ...
Nicolás Gálvez +5 more
doaj +1 more source
In-Flight Calibration of GF-1/WFV Visible Channels Using Rayleigh Scattering
Remote Sensing, 2017 China is planning to launch more and more optical remote-sensing satellites with high spatial resolution and multistep gains. Field calibration, the current operational method of satellite in-flight radiometric calibration, still does not have enough ...
Xingfeng Chen +9 more
doaj +1 more source
Digital zenith camera system for Astro-Geodetic applications in Turkey
Journal of Geodesy and Geoinformation, 2012 There are several current investigations on gravity field of the earth in Geodesy and Geophysics. Earth sciences and space researches are also interested in gravity studies. Geoid, which approximately has an equal potential to the potential of mean sea level, is the main datum for height systems and is used for coordinate transformation, reduction of ...
HALICIOĞLU, Kerem +2 more
openaire +2 more sources
ESTIMATION OF THE ATMOSPHERIC REFRACTION EFFECT IN AIRBORNE IMAGES USING RADIOSONDE DATA [PDF]
The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2016 The influence of the atmospheric refraction on the geometric accuracy of airborne photogrammetric images was already considered in the days of analogue photography.
U. Beisl, U. Tempelmann
doaj +1 more source
Structural Colors from Modulated Topological Defects in Molecular Smectic Liquid Crystals
Advanced Science, EarlyView.Rather than using dyes and pigments, nature produces the colors of some butterflies and beetles through optical interference phenomena. This study describes an original biomimetic strategy exploiting the spontaneous formation of modulated linear defects in thin films of 8CB, a common molecular liquid crystal.
Camille N. Mahyaoui +7 more
wiley +1 more source
Drones, 2023 This study investigates the application of unoccupied aerial vehicles (UAVs) equipped with a Micasense RedEdge-MX multispectral camera for the estimation of Secchi depth (SD) in inland water bodies.
Edvinas Tiškus +4 more
doaj +1 more source
Quarterly Journal of the Royal Meteorological Society, EarlyView.This paper describes the Met Office's new lightning location system LEELA. A brief overview of the upgraded hardware and geolocation algorithms is given. LEELA has improved lightning detection capabilities, especially at night. When comparing LEELA to the previous ATDnet system against ground truths LEELA has 100% storm detection efficiency within 5 km
Graeme Marlton +7 more
wiley +1 more source
The Mysterious Stranger and Modern Enchantment
The British Journal of Sociology, EarlyView.ABSTRACT Sociological accounts of modernity have long emphasized rationalization, alienation, and the attenuation of affective intensity. While these diagnoses capture crucial dynamics of modern social order, they leave underexplored a persistent and generative dimension of social life: enchantment.
Dmitry Kurakin
wiley +1 more source