14 Hits in 8.9 sec

Surface Properties of Asteroids from Mid-Infrared Observations and Thermophysical Modeling [article]

Michael Mueller
2012 arXiv   pre-print
more than an order of magnitude.  ...  Thermal inertia is a very sensitive indicator for the presence or absence of particulate material on the surface. Our results indicate that even sub-km asteroids are covered with coarse regolith.  ...  Acknowledgments The author is visiting astronomer (if virtually so for most of the time) at the Infrared Telescope Facility, which is operated by the University of Hawaii under Cooperative Agreement no  ... 
arXiv:1208.3993v1 fatcat:m2s33w7bi5dvvmkdackh5i6kce

An overview of GNSS remote sensing

Kegen Yu, Chris Rizos, Derek Burrage, Andrew G Dempster, Kefei Zhang, Markus Markgraf
2014 EURASIP Journal on Advances in Signal Processing  
This paper provides an overview of the state of the art of this relatively new and, in some respects, underutilised remote sensing technique.  ...  The idea of using GNSS signals for remote sensing -the atmosphere, oceans or Earth surface -was first proposed more than two decades ago.  ...  such as synthetic aperture radar (SAR), satellite radar altimetry, lidar or GNSS remote sensing (GNSS-RO, GNSS-R).  ... 
doi:10.1186/1687-6180-2014-134 fatcat:kwpcwgxwgbcdlomif2dpylpjxa

Analysis and modeling of solar irradiance variations [article]

K. L. Yeo
2015 arXiv   pre-print
An established example of such models is SATIRE-S (Spectral And Total Irradiance REconstruction for the Satellite era).  ...  Also presented is an update of the SATIRE-S model.  ...  Thank you, for taking a gamble on me, I hope it paid off.  ... 
arXiv:1412.3935v2 fatcat:pav6f6zubjclfmbcvahpjccxz4

Extracting recent short-term glacier velocity evolution over Southern Alaska from a large collection of Landsat data

Bas Altena, Ted Scambos, Mark Fahnestock, Andreas Kääb
2018 The Cryosphere Discussions  
In this study we propose a new post-processing procedure for assembling a set of velocity fields in time-series that generates a better visualization of glacier speed changes when the velocity fields are  ...  We demonstrate this automatic method on a large glacier area in Alaska/Canada. The visualization tool provides an overview of where and when interesting glacier dynamics are occurring.  ...  We also thank Shae Frydenlund for improving the English language of an early version of this contribution.  ... 
doi:10.5194/tc-2018-66 fatcat:dy2zeqenbzfkrmwqjagbqnabv4

Validation of the Atmospheric Chemistry Experiment (ACE) version 2.2 temperature using ground-based and space-borne measurements

R. J. Sica, M. R. M. Izawa, K. A. Walker, C. Boone, S. V. Petelina, P. S. Argall, P. Bernath, G. B. Burns, V. Catoire, R. L. Collins, W. H. Daffer, C. De Clercq (+26 others)
2008 Atmospheric Chemistry and Physics  
An ensemble of space-borne and ground-based instruments has been used to evaluate the quality of the version 2.2 temperature retrievals from the Atmospheric Chemistry Experiment Fourier Transform Spectrometer  ...  Though these relatively large oscillations in temperature can be on the order of 10 K in the mesosphere, retrieved volume mixing ratio profiles typically vary by less than a percent or so.  ...  used in this work and for helpful discussions and comments on the manuscript.  ... 
doi:10.5194/acp-8-35-2008 fatcat:fyc4ogtfajgehmskdfscn6e25y

Radio interferometry techniques for geodesy

1979 Bulletin Géodésique  
A smoothly The success of the NASA developments of VLBI and space laser ranging has prompted NASA to establish a Crustal Dynamics Project for the application of these space techniques to the study of the  ...  Correlation and further processing of the data is carried out, for the most part, using the threestation Mark II processor at the Max Planck Institut fiir Radioastronomie in Bonn, Germany.  ...  Magnetic susceptibility of NR-1 for main field -, c--+ .+.. _ ._ +.. -.+--. + ~. .+ .Magnetic susceptibility of NR-1 for main field +. Magnetic susceptibility of NR-2 for main field +.  ... 
doi:10.1007/bf02521643 fatcat:2wf6omvyrfeb7iq56xseifrpxe

Comparison of Phase-less Direction of Arrival Estimation Methods for Switched Beam Antennas

A. Cidronali, G. Collodi, M. Lucarelli, S. Maddio, M. Passafiume, G. Pelosi, S. Selleri
2019 2019 PhotonIcs & Electromagnetics Research Symposium - Spring (PIERS-Spring)  
of Undersampled Electromagnetic Fields D.  ...  Shestopalov, Kazuya Kobayashi 14:30 A Theoretical Method for Estimating the Influence of an Alternating Electric Field on Atomic Spectral Line Invited On the Use of Bianisotropic Huygens' Metasurfaces  ... 
doi:10.1109/piers-spring46901.2019.9017336 fatcat:adobca2sg5ga5ccjpuepkrpbsa

Advanced methods for relightable scene representations in image space [article]

Martin Fuchs, Universität Des Saarlandes, Universität Des Saarlandes
Data-driven approaches that model the scene globally as a reflectance field function in eight parameters deliver high quality and work for most material combinations, but are costly to acquire and store  ...  The realistic reproduction of visual appearance of real-world objects requires accurate computer graphics models that describe the optical interaction of a scene with its surroundings.  ...  It is a thin, transparent sheet, which largely reduces transmission for non-normal viewing angles.  ... 
doi:10.22028/d291-25930 fatcat:fon3xe5wh5avtknbpczoupfexq

Efficient, image-based appearance acquisition of real-world objects [article]

Hendrik Peter Asmus Lensch, Universität Des Saarlandes, Universität Des Saarlandes
Dieter Fellner, both for acting as reviewer and for coordinating the DFG Schwerpunktprogramm V 3 D 2 which partly funded this dissertation. I would especially like to thank Prof. Dr.  ...  Hans-Peter Seidel, for his support during my stay at the Max-Planck-Institut, his valuable comments, and his interest and promotion of this work.  ...  Because of this we get L 1 dω 1 dA 1 = L 2 dω 2 dA 2 . (2. 3) The solid angles dω 1 and dω 2 for this transport are given as dω 1 = dA 2 r 2 and dω 2 = dA 1 r 2 . (2.4) Inserting this into Equation 2.3  ... 
doi:10.22028/d291-25757 fatcat:xyzlyauo6jgljpborszih5vqji

Artistic Path Space Editing of Physically Based Light Transport

Thorsten-Walther Schmidt
My fellow co-founders at Lightrig, for helping move this idea from research into the industry. Christophe Hery, for taking interest in our work early on.  ...  And especially those of the very early days: Jan Novák, Thomas Engelhardt, Gábor Liktor and Tim Reiner.  ...  tracing algorithms, such as sampling the aperture for depth of field, sampling the shutter interval for motion blur, and sampling the hemisphere of directions for glossy reflections.  ... 
doi:10.5445/ir/1000081513 fatcat:luk42fb4x5gibjrshl3niilxti

Image Super-Resolution Enhancements for Airborne Sensors

Matthew Collier Woods
2016 unpublished
These include wide field-of-view imagery, optical distortion, oblique viewing geometries, spectral variety from the visible band through the infrared, constant ego-motion, and availability of supplementary  ...  This is the ability for an algorithm or device to recognize targets or objects based on data obtained from sensors [6, 20, 21] .  ...  Depending on the application, airborne cameras vary from having a narrow field-of-view (NFOV) of a few degrees to a wide field-of-view (WFOV) of over 100 degrees.  ... 
doi:10.21985/n2q96d fatcat:adgdjcyjtzhwdpvljav5xhmmta

3D image analysis and smart automotive applications [article]

Faisal Mufti, University, The Australian National, University, The Australian National
The automotive industry is actively pursuing vision systems for smart automobile applications. This thesis considers algorithms from both TOF cameras and ordinary CCD cameras.  ...  The angle 6X is approximately constant for a thin lens with a small field of view. Non-modulated IR Source The TOF camera IR source produces a DC signal from the same IR source LEDs.  ...  in its field of view as shown in Figure 4 .2.  ... 
doi:10.25911/5d611d0350f1d fatcat:l2ufjt4iifbqlel53p2hah4y6q

Lux junior 2021: 15. Internationales Forum für den lichttechnischen Nachwuchs, 04. – 06. Juni 2021, Ilmenau : Tagungsband

Cornelia Vandahl, Christoph Schierz, Thüringer Universitäts- Und Landesbibliothek Jena
Moog GmbH for supplying samples. The authors thank Byk Gardner GmbH for discussions on gloss meters. References  ...  The authors would like to thank the Research and Development Sector at the Technical University of Sofia for the financial support. -190 - Acknowledgements The authors appreciate the support by the Heidelberger  ...  This is considered in the equation by adding an additional term: is the mean luminance of the field of view (fov), the area of the fov and the age of the observer.  ... 
doi:10.22032/dbt.48427 fatcat:yf72rzjm4bb6ng3uovtyrzttlu

Surface-enhanced raman scattering for the reliable and reproducible detection of disease antigens in biologically relevant media

Alexis Cathrine Crawford
The error in the accuracy for an AAR of 1.0 x 10-7 for an Replicate of 1 is ~80% larger than that for Replicate > 25.  ...  Dose-response plot for human IgG calibration versus t 1/2 for an upright (c) and inverted (d) ERL incubation.  ...  Introduction Advances in tuberculosis (TB) diagnostics stand as one o f the top priorities in global health.1-3 TB is the world's second deadliest infectious disease.  ... 
doi:10.26053/0h-hv6m-cm00 fatcat:ezxeognihnd2hausml3plwyx3a