Results 11 to 20 of about 36,135 (283)
Sensors, 2020 An external modulation laser module assembly (EMLMA) is proposed to suppress nonlinear errors in an interferometry system and improve its measurement performance.
Tao Zhang +4 more
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The Astrophysical Journal, 2023 Scintillation of pulsar radio signals caused by the interstellar medium can in principle be used for interstellar interferometry. Changes in the dynamic spectra as a function of pulsar longitude were in the past interpreted as having spatially resolved ...
M. V. Popov +8 more
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Software and Techniques for VLBI Data Processing and Analysis
Universe, 2022 Very-long-baseline interferometry (VLBI) is a challenging observational technique, which requires in-depth knowledge about radio telescope instrumentation, interferometry, and the handling of noisy data.
Michael Janssen +2 more
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Residual Entropy as a Diagnostic and Stopping Metric for CLEAN
The Astronomical Journal, 2023 We propose the use of entropy, measured from the spatial and flux distribution of pixels in the residual image, as a potential diagnostic and stopping metric for the CLEAN algorithm.
D. C. Homan, J. S. Roth, A. B. Pushkarev
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Baseline-dependent averaging in radio interferometry [PDF]
Monthly Notices of the Royal Astronomical Society, 2018 12 pages, 9 figures, accepted for publication in the Monthly Notices of the Royal Astronomical Society ...
S J Wijnholds, A G Willis, S Salvini
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ANALYSIS OF DUAL-FREQUENCY INTERFEROMETRY APPLICABILITY FOR TARGET ELEVATION ANGLE MEASUREMENT USING TWO-COORDINATE RADARS [PDF]
Radio Physics and Radio Astronomy, 2023 Subject and Purpose. The study deals with the dual-frequency radio interferometry technique, which is based on the employment of two fairly close frequencies with the aim to remove ambiguity of the radar target elevation estimation using 2D-radar and ...
V. G. Galushko +2 more
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Bayesian source discrimination in radio interferometry [PDF]
Monthly Notices of the Royal Astronomical Society, 2018 Methods currently in use for locating and characterising sources in radio interferometry maps are designed for processing images, and require interferometric maps to be preprocessed so as to resemble conventional images. We demonstrate a Bayesian code - BaSC - that takes into account the interferometric visibility data despite working with more ...
P R Hague, H Ye, B Nikolic, S F Gull
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The Potsdam Open Source Radio Interferometry Tool (PORT) [PDF]
Publications of the Astronomical Society of the Pacific, 2021 Abstract The Potsdam Open Source Radio Interferometry Tool (PORT) is the very long baseline interferometry (VLBI) analysis software developed and maintained at the GFZ German Research Centre for Geosciences. Chiefly, PORT is tasked with the timely processing of VLBI sessions and post-processing activities supporting the generation of ...
Schuh, H. +20 more
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VHF Radio Interferometry of Lightning [PDF]
International Astronomical Union Colloquium, 1991 AbstractLightning discharges radiate strongly at radio frequencies, and studies of the radiation provide valuable information on lightning breakdown processes. Interferometric techniques can be used to locate the numerous radiation events as a function of time during a discharge and to generate images of the developing lightning channels inside a storm,
P.R. Krehbiel +4 more
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On the RFI Detection in Differential Interferometric Synthetic Aperture Radar [PDF]
The International Archives of the Photogrammetry, Remote Sensing and Spatial Information SciencesSynthetic Aperture Radar (SAR) can image the ground with a wide area and high resolution at all times and in all weather and has become an important means of remote sensing.
Y. Liu, M. Tao, J. Li, T. Li, J. Chen
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