Results 91 to 100 of about 11,790 (229)

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

Comparison of brightness temperatures observed from ground-based microwave radiometers during TUC

Meteorologische Zeitschrift, 2006
The agreement of two ground-based microwave radiometers during the Temperature, hUmidity, and Cloud (TUC) profiling campaign has been evaluated in terms of measured brightness temperature.
Domenico Cimini, Tim J. Hewison, Lorenz Martin   +2 more
doaj   +1 more source

Microwave radiometric studies and ground truth measurements of the NASA/USGS Southern California test site [PDF]

, 1969
The field measurement program conducted at the NASA/USGS Southern California Test Site is discussed. Ground truth data and multifrequency microwave brightness data were acquired by a mobile field laboratory operating in conjunction with airborne ...
Edgerton, A. T., Jenkins, J. E., Sakamoto, S., Trexler, D. T.   +3 more
core   +2 more sources

Atmospheric temperature, water vapour and liquid water path from two microwave radiometers during MOSAiC. [PDF]

Sci Data, 2022
Walbröl A, Crewell S, Engelmann R, Orlandi E, Griesche H, Radenz M, Hofer J, Althausen D, Maturilli M, Ebell K.   +9 more
europepmc   +1 more source

A study of the relative effectiveness and cost of computerized information retrieval in the interactive mode [PDF]

Results of a number of experiments to illuminate the relative effectiveness and costs of computerized information retrieval in the interactive mode are reported.
Furniss, M. A., Potter, T. R., Smetana, F. O.   +2 more
core   +1 more source

Thermal microwave emissions from vegetated fields: A comparison between theory and experiment [PDF]

The radiometric measurements over bare field and fields covered with grass, soybean, corn, and alfalfa were made with 1.4 GHz and 5 GHz microwave radiometers during August - October 1978.
Chuang, S. L., Dombrowski, M., Shiue, J., Wang, J. R.   +3 more
core   +1 more source

A low CMB variance in the WMAP data

, 2008
We have estimated the CMB variance from the three-year WMAP data, finding a value which is significantly lower than the one expected from Gaussian simulations using the WMAP best-fit cosmological model, at a significance level of 98.7 per cent.
A. N. Lasenby, C. Monteserín, Cayon L., Coles P., Coles P., E. Martínez-González, M. P. Hobson, Martinez-Gonzalez E., P. Vielva, R. B. Barreiro   +9 more
core   +1 more source

NASA sea ice and snow validation plan for the Defense Meteorological Satellite Program special sensor microwave/imager [PDF]

This document addresses the task of developing and executing a plan for validating the algorithm used for initial processing of sea ice data from the Special Sensor Microwave/Imager (SSMI).
Cavalieri, Donald J., Swift, Calvin T.
core   +1 more source

Self-balancing microwave comparison radiometer

Electronics Letters, 1965
A 3cm radiometer evolved from Allred's 3 Mc/s system is described. The sum and difference of the voltages from an aerial and a controllable noise source are formed in a magic-T hybrid and correlated. The correlator output, which is zero only for equal aerial and reference powers, is used to adjust the reference to equality.
H.S. Oranc, E.D.R. Shearman
openaire   +1 more source

Lunar heat flow from the observation of Chinese Chang’E 2 and LRO diviner radiometers

AIP Advances
Lunar heat flow within 75°N to 65°S and 60°W to 100°E regions is retrieved from microwave brightness temperature observed by Chang’E-2 (CE-2) Lunar Microwave Radiometers and infrared brightness temperature observed by Lunar Reconnaissance Orbiter (LRO ...
Dan Zhang, Cui Li
doaj   +1 more source