Results 1 to 10 of about 24,045 (203)

The linearity response of the Planck-LFI flight model receivers [PDF]

, 2009
In this paper we discuss the linearity response of the Planck-LFI receivers, with particular reference to signal compression measured on the 30 and 44 GHz channels.
A Gregorio, A Mennella, A Wilkinson, A Zacchei, A Zonca, A. Mennella ., C Franceschet, D Kettle, E Artal, E. Artal ., F Cuttaia, F Villa, F. Villa ., G Morgante, J Tuovinen, J Varis, J. Herreros ., J. Varis ., L Mendes, L Stringhetti, L Terenzi, L Valenziano, L. Valenziano ., M Bersanelli, M Frailis, M Laaninen, M Maris, M Miccolis, M Sandri, M Tomasi, M. Bersanelli ., M. Maris ., N Hughes, N Mandolesi, N Roddis, N. Mandolesi ., O D'Arcangelo, O. D'Arcangelo ., O. D'Arcangelo ., P Battaglia, P Jukkala, P Leutenegger, P M Lapolla, P Meinhold, P. Martin, PLANCK collaboration, R C Butler, R Davis, R Leonardi, R Silvestri, S Galeotta, S Lowe, V-H Kilpiä, W. Daywitt   +53 more
core   +2 more sources

Spectrum Extension of a Real-Aperture Microwave Radiometer Using a Spectrum Extension Convolutional Neural Network for Spatial Resolution Enhancement

Remote Sensing, 2023
Enhancing the spatial resolution of real-aperture microwave radiometers is an essential research topic. The accuracy of the numerical values of brightness temperatures (BTs) observed using microwave radiometers directly affects the precision of the ...
Guanghui Zhao, Yuhang Huang, Chengwang Xiao, Zhiwei Chen, Wenjing Wang   +4 more
doaj   +1 more source

Chessboard FPA in 130-nm SiGe BiCMOS for High-Resolution Passive Terahertz Imaging

IEEE Journal of Microwaves
This work presents a chessboard focal plane array (FPA) camera with state-of-the-art thermal and spatial resolution in the 200–$600 \,\mathrm{G}\mathrm{Hz}$ frequency range.
Martijn Hoogelander, Marco Spirito, Batuhan Sutbas, Corrado Carta, Nuria Llombart, Maria Alonso-delPino   +5 more
doaj   +1 more source

UV irradiance radiometers calibration procedure [PDF]

Tekhnologiya i Konstruirovanie v Elektronnoi Apparature, 2008
The paper deals with the problems arising at calibration of narrow-band spectral-sensitive radiometers. The procedure of irradiance unit transfer to UV radiometers — UV radiometers calibration procedure — is presented.
Doctorovich I. V., Butenko V. K., Hodovaniouk V. N., Fodchuk I. M., Yuriev V. G.   +4 more
doaj  

Problems of irradiance characteristics measurement of solar simulators for ground spacecraft tests

Космические аппараты и технологии, 2020
The reliability of both spacecraft as a whole and of their systems is confirmed at the stage of complex ground-based experimental tests, including complex thermal vacuum tests. The thermal state of the test object in thermal vacuum chambers is obtaining,
A. A. Shevchuk, O. V. Pastushenko, V. V. Dvirniy, G. V. Dvirniy, A. A. Filatov   +4 more
doaj   +1 more source

Evaluation of the new ESR network software for the retrieval of direct sun products from CIMEL CE318 and PREDE POM01 sun-sky radiometers [PDF]

Atmospheric Chemistry and Physics, 2012
The European Skynet Radiometers network (EuroSkyRad or ESR) has been recently established as a research network of European PREDE sun-sky radiometers. Moreover, ESR is federated with SKYNET, an international network of PREDE sun-sky radiometers mostly ...
V. Estellés, M. Campanelli, T. J. Smyth, M. P. Utrillas, J. A. Martínez-Lozano   +4 more
doaj   +1 more source

In-flight calibration and verification of the Planck-LFI instrument

, 2013
In this paper we discuss the Planck-LFI in-flight calibration campaign. After a brief overview of the ground test campaigns, we describe in detail the calibration and performance verification (CPV) phase, carried out in space during and just after the ...
Baker, Michelle, Battaglia, Paola, Bersanelli, Marco, Butler, Reginald Christophe, Casale, Mauro, Charra, Maryse, Cuevas, Leticia Perez, Cuttaia, Francesco, Davis, Richard, Foley, Steve, Frailis, Marco, Franceschet, Cristian, Franceschi, Enrico, Galeotta, Samuele, Gregorio, Anna, Krassenburg, Mike, Laureijs, René, Leonardi, Rodrigo, Lowe, Steve, Maciaszek, Thierry, Mandolesi, Nazzareno, Maris, Michele, Meinhold, Peter, Melot, Frederick, Mendes, Luis, Mennella, Aniello, Morgante, Gianluca, Pearson, Dave, Rihet, Patrick, Sandri, Maura, Stassi, Patrick, Stringhetti, Luca, Tauber, Jan, Tavagnacco, Daniele, Terenzi, Luca, Texier, Damien, Tomasi, Maurizio, Villa, Fabrizio, Watson, Christopher J., Wilkinson, Althea, Wilson, Philip, Zacchei, Andrea, Zonca, Andrea   +42 more
core   +3 more sources

On the inaccuracies of dental radiometers.

PLoS ONE, 2021
This study investigated the accuracy of sixteen models of commercial dental radiometers (DR) in measuring the output of thirty-eight LED light curing units (LCUs) compared with a 'gold standard' laboratory-grade spectrometer integrating-sphere (IS ...
Adrian C Shortall, Mohammed A Hadis, William M Palin   +2 more
doaj   +1 more source

The BaR-SPOrt Experiment [PDF]

, 2002
BaR-SPOrt (Balloon-borne Radiometers for Sky Polarisation Observations) is an experiment to measure the linearly polarized emission of sky patches at 32 and 90 GHz with sub-degree angular resolution.
, Andrea Boscaleri, C. Macculi, C. Sbarra, E. N. Vinyajkin, E. Pascale, Ennio Morelli, Ettore Carretti, G. Bernardi, G. Virone, Giorgio Sironi, Giuliano Boella, Giulio Ventura, J. Monari, Luciano Nicastro, M. Baralis, M. Poloni, M. Tucci, M. V. Sazhin, Marco DePetris, Mario Zannoni, Massimo Gervasi, O. Peverini, Pierluigi De Bernardis, R. Fabbri, R. Nesti, R. Tascone, S. Bonometto, S. Cecchini, S. Cortiglioni, S. Masi, S. Poppi, Vincenzo Natale   +32 more
core   +2 more sources

Results from the Wilkinson Microwave Anisotropy Probe

, 2014
The Wilkinson Microwave Anisotropy Probe (WMAP) mapped the distribution of temperature and polarization over the entire sky in five microwave frequency bands. These full-sky maps were used to obtain measurements of temperature and polarization anisotropy
Bennett, Charles L., Komatsu, Eiichiro
core   +1 more source