Results 11 to 20 of about 1,690,717 (244)

SEVEN-YEAR WILKINSON MICROWAVE ANISOTROPY PROBE (WMAP) OBSERVATIONS: COSMOLOGICAL INTERPRETATION [PDF]

, 2010
The combination of seven-year data from WMAP and improved astrophysical data rigorously tests the standard cosmological model and places new constraints on its basic parameters and extensions.
E. Komatsu, K. Smith, J. Dunkley, C. Bennett, B. Gold, G. Hinshaw, N. Jarosik, D. Larson, M. Nolta, L. Page, D. Spergel, M. Halpern, R. Hill, A. Kogut, M. Limon, S. Meyer, N. Odegard, G. Tucker, J. Weiland, Edward J. Wollack, E. L. Wright   +20 more
semanticscholar   +1 more source

A 3D Printed Ka-Band High-Efficiency Wide-Slit Antenna Array for High-Power Microwave Applications

International Journal of Antennas and Propagation, 2022
A Ka-band high-power waveguide wide-slit antenna array with high efficiency and high-power capacity is proposed in this paper. The antenna uses a waveguide vertical transition structure as a part of the feed network, which improves the compactness and ...
Liang Liu, Yu Yang, Shifeng Li, Xianghe Fang, Fanbao Meng, Chuan Yu   +5 more
doaj   +1 more source

First-Year Wilkinson Microwave Anisotropy Probe (WMAP) Observations: Determination of Cosmological Parameters [PDF]

, 2003
WMAP precision data enable accurate testing of cosmological models. We find that the emerging standard model of cosmology, a flat Λ-dominated universe seeded by a nearly scale-invariant adiabatic Gaussian fluctuations, fits the WMAP data.
D. Spergel, L. Verde, H. Peiris, E. Komatsu, M. Nolta, C. Bennett, M. Halpern, G. Hinshaw, N. Jarosik, A. Kogut, M. Limon, S. Meyer, L. Page, G. Tucker, J. Weiland, Edward J. Wollack, E. L. W. Princeton, Nasa Gsfc, Ubc, U. Chicaco, Brown, Ssai, Ucla   +22 more
semanticscholar   +1 more source

NINE-YEAR WILKINSON MICROWAVE ANISOTROPY PROBE (WMAP) OBSERVATIONS: COSMOLOGICAL PARAMETER RESULTS [PDF]

, 2012
We present cosmological parameter constraints based on the final nine-year Wilkinson Microwave Anisotropy Probe (WMAP) data, in conjunction with a number of additional cosmological data sets.
G. Hinshaw, D. Larson, E. Komatsu, D. Spergel, C. Bennett, J. Dunkley, M. Nolta, M. Halpern, R. Hill, N. Odegard, L. Page, K. Smith, J. Weiland, B. Gold, N. Jarosik, A. Kogut, M. Limon, S. Meyer, G. Tucker, Edward J. Wollack, E. Wright   +20 more
semanticscholar   +1 more source

Flexible Direction-of-Arrival Simulation for Automotive Radar Target Simulators

IEEE Journal of Microwaves, 2021
In order to simulate realistic traffic scenarios, a radar target simulator must be able to generate multiple radar targets with different directions of arrival.
Pirmin Schoeder, Vinzenz Janoudi, Benedikt Meinecke, David Werbunat, Christian Waldschmidt   +4 more
doaj   +1 more source

State of the Art and Prospects in Metal-Organic Framework-Derived Microwave Absorption Materials

Nano-Micro Letters, 2022
The metal organic frameworks derived microwave absorption materials (MOF derived MAMs) were systematically reviewed. The design principles, preparation methods and effect of microstructures and composites of MOF derived MAMs were discussed.
Shu-Ting Ren, Haojie Yu, Li Wang, Zhikun Huang, Tengfei Lin, Yudi Huang, Jian Yang, Yi-Mei Hong, Jinyi Liu   +8 more
semanticscholar   +1 more source

UAV-Based Bistatic SAR-Imaging Using a Stationary Repeater

IEEE Journal of Microwaves, 2023
Synthetic aperture radar (SAR) is an established technique for high-resolution radar imaging relying on the ego-motion of the radar. The long coherent integration time of the radar in conjunction with a linear or circular trajectory enables the ...
Alexander Grathwohl, Benedikt Meinecke, Marius Widmann, Julian Kanz, Christian Waldschmidt   +4 more
doaj   +1 more source

First-Year Wilkinson Microwave Anisotropy Probe (WMAP) Observations: Preliminary Maps and Basic Results [PDF]

, 2003
We present full-sky microwave maps in five frequency bands (23-94 GHz) from the Wilkinson Microwave Anisotropy Probe (WMAP) first-year sky survey. Calibration errors are less than 0.5%, and the low systematic error level is well specified.
C. Bennett, M. Halpern, G. Hinshaw, N. Jarosik, A. Kogut, M. Limon, S. Meyer, L. Page, D. Spergel, G. Tucker, Edward J. Wollack, E. Wright, C. Barnès, M. Greason, R. Hill, E. Komatsu, M. Nolta, N. Odegard, H. V. Peirs, L. Verde, J. W. N. Gsfc, Ubc, Princeton, Nrc, U. Chicago, Brown, Ucla, Ssai   +27 more
semanticscholar   +1 more source

Mutual Interference of Automotive OFDM Radars—Analysis and Countermeasures

IEEE Journal of Microwaves, 2021
Due to its noise-like signal property, digital orthogonal frequency-division multiplexing (OFDM) radars are often assumed to be robust against interference.
Benedikt Schweizer, Christina Knill, David Werbunat, Simon Stephany, Christian Waldschmidt   +4 more
doaj   +1 more source

FIVE-YEAR WILKINSON MICROWAVE ANISOTROPY PROBE OBSERVATIONS: COSMOLOGICAL INTERPRETATION [PDF]

, 2008
The Wilkinson Microwave Anisotropy Probe (WMAP) 5-year data provide stringent limits on deviations from the minimal, six-parameter Λ cold dark matter model. We report these limits and use them to constrain the physics of cosmic inflation via Gaussianity,
E. Komatsu, J. Dunkley, J. Dunkley, M. Nolta, C. Bennett, B. Gold, G. Hinshaw, N. Jarosik, D. Larson, M. Limon, L. Page, D. Spergel, M. Halpern, R. S. Hill, A. Kogut, S. Meyer, G. S. Tucker, J. Weiland, Edward J. Wollack, E. L. Wright   +19 more
semanticscholar   +1 more source