Results 21 to 30 of about 658,829 (304)
REDUNDANT ARRAY CONFIGURATIONS FOR 21 cm COSMOLOGY [PDF]
The Astrophysical Journal, 2016 ABSTRACT Realizing the potential of 21 cm tomography to statistically probe the intergalactic medium before and during the Epoch of Reionization requires large telescopes and precise control of systematics. Next-generation telescopes are now being designed and built to meet these challenges, drawing lessons from first-generation ...
Dillon, Joshua S, Parsons, Aaron R
openaire +4 more sources
Locking and wavelength selection of an ultra-collimated single-mode diode laser bar by a volume holographic grating [PDF]
, 2013 Wavelength-locking by a volume holographic grating (VHG) is reported for a diode laser bar with 49 single mode emitters, fitted with a dual-axis collimation phase-plate for smile elimination and excellent beam pointing correction.
Baker, Howard John +2 more
core +1 more source
Healthcare Technology Letters, 2019 This work proposes and computationally investigate the use of magnetic neural stimulation as an alternative to electrical stimulation to achieve selective activation of rat sciatic nerve.
Pragya Kosta +3 more
doaj +1 more source
Optimal antenna configurations for the BIMA Array [PDF]
International Astronomical Union Colloquium, 1991 AbstractWe attempt to determine optimal configurations of six antennas for the proposed Berkeley Illinois Maryland Array. The instrumental response is used as a performance measure. A two dimensional sine function is chosen as the ideal beam, supported by theoretical considerations.
Thatte, N, Welch, W
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L-Shaped Sparse Array Structure for 2-D DOA Estimation
IEEE Access, 2020 In order to improve the performance of two-dimensional (2-D) direction-of-arrival (DOA) estimation, an L-shaped sparse array structured by two new sparse linear arrays is proposed. Each part of the proposed L-shaped array is used for one-dimensional (1-D)
Fan Wu +5 more
doaj +1 more source
Heterodyne holographic microscopy of gold particles [PDF]
, 2008 We report experimental results on heterodyne holographic microscopy of subwavelength-sized gold particles. The apparatus uses continuous green laser illumination of the metal beads in a total internal reflection configuration for dark-field operation ...
Absil, Emilie +5 more
core +3 more sources
Optimization of array configuration [PDF]
The Journal of the Acoustical Society of America, 1987 The following article appeared as: Penner, A.R. (1987). Optimization of array configuration. Journal of the Acoustical Society of America, 82(6), 2152-2154, and may be found at: http://dx.doi.org/10.1121/1.395661.
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IEEE Access, 2021 Partial shading is an unavoidable factor that reduces the performance of solar PV systems. The PV system receives uneven irradiation due to partial shading which causes the mismatch loss.
A. Srinivasan +7 more
doaj +1 more source
Applied Sciences, 2023 This paper proposes an S/X-band single-layer shared-aperture array antenna for the multifunction radars of military ships. A unit cell of the proposed antenna consists of one S-band element and four X-band elements. The S- and X-band elements are printed
En-Yeal Yim +3 more
doaj +1 more source
Data Combinations Accounting for LISA Spacecraft Motion [PDF]
, 2003 LISA is an array of three spacecraft in an approximately equilateral triangle configuration which will be used as a low-frequency gravitational wave detector. We present here new generalizations of the Michelson- and Sagnac-type time-delay interferometry
Daniel A. Shaddock +11 more
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