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The Multiconjugate Adaptive optics Demonstrator (MAD) for ESO-Very Large Telescopes (VLT) will demonstrate on sky the MultiConjugate Adaptive Optics (MCAO) technique. In this paper the laboratory tests relative to the first preliminary…

Instrumentation and Methods for Astrophysics · Physics 2014-11-20 Carmelo Arcidiacono , Matteo Lombini , Emiliano Diolaiti , Jacopo Farinato , Roberto Ragazzoni

The Laser Interferometer Space Antenna (LISA) is a proposed space mission for the detection of gravitational waves. It consists of three drag-free satellites flying in a triangular constellation. A gravitational reference sensor is used in…

Instrumentation and Methods for Astrophysics · Physics 2013-02-08 Andreas Zoellner , Eric Hultgren , Ke-Xun Sun

The high sensitivity of the new generation of radio telescopes such as the Square Kilometre Array (SKA) will allow cosmological weak lensing measurements at radio wavelengths that are competitive with optical surveys. We present an…

Instrumentation and Methods for Astrophysics · Physics 2016-09-23 Marzia Rivi , Lance Miller , Sphesihle Makhathini , Filipe Batoni Abdalla

Current multi-view 3D object detection methods often fail to detect objects in the overlap region properly, and the networks' understanding of the scene is often limited to that of a monocular detection network. Moreover, objects in the…

Computer Vision and Pattern Recognition · Computer Science 2023-06-30 Wonseok Roh , Gyusam Chang , Seokha Moon , Giljoo Nam , Chanyoung Kim , Younghyun Kim , Jinkyu Kim , Sangpil Kim

Direct detection of the Dark Ages and the Epoch of Reionization (EOR) is among the main scientific objectives of all current and future low-frequency radio facilities. In this paper we summarize and discuss recent results, based on…

Astrophysics · Physics 2008-11-26 Ilian T. Iliev , Garrelt Mellema , Ue-Li Pen , Paul R. Shapiro

Satellite images present unique challenges due to their high object variability and lower spatial resolution, particularly for detecting atmospheric gravity waves which exhibit significant variability in scale, shape, and pattern extent,…

Instrumentation and Methods for Astrophysics · Physics 2025-08-06 Seraj Al Mahmud Mostafa , Jianwu Wang

We compute the spherically-averaged power spectrum from four seasons of data obtained for the Epoch of Reionisation (EoR) project observed with the Murchison Widefield Array (MWA). We measure the EoR power spectrum over $k=…

In this work, we propose a novel approach for high accuracy user localization by merging tools from both millimeter wave (mmWave) imaging and communications. The key idea of the proposed solution is to leverage mmWave imaging to construct a…

Information Theory · Computer Science 2018-11-20 Mohammed Aladsani , Ahmed Alkhateeb , Georgios C. Trichopoulos

We introduce a new pipeline for analyzing and mitigating radio frequency interference (RFI), which we call Sky-Subtracted Incoherent Noise Spectra (SSINS). SSINS is designed to identify and remove faint RFI below the single baseline thermal…

Instrumentation and Methods for Astrophysics · Physics 2019-10-10 Michael J. Wilensky , Miguel F. Morales , Bryna J. Hazelton , Nichole Barry , Ruby Byrne , Sumit Roy

Accurately detecting rendezvous and proximity operations (RPO) is crucial for understanding how objects are behaving in the space domain. However, detecting closely-spaced objects (CSO) is challenging for ground-based optical space domain…

Computer Vision and Pattern Recognition · Computer Science 2023-11-21 Kerianne Pruett , Nathan McNaughton , Michael Schneider

Space objects in Geostationary Earth Orbit (GEO) present significant detection challenges in optical imaging due to weak signals, complex stellar backgrounds, and environmental interference. In this paper, we enhance high-frequency features…

Computer Vision and Pattern Recognition · Computer Science 2026-01-01 Xiaoqing Lan , Biqiao Xin , Bingshu Wang , Han Zhang , Rui Zhu , Laixian Zhang

Radio Frequency Interference (RFI) has historically plagued radio astronomy, worsening with the rapid spread of electronics and increasing telescope sensitivity. We present a multi-dimensional probabilistic framework for characterising the…

Instrumentation and Methods for Astrophysics · Physics 2021-10-25 Isaac Sihlangu , Nadeem Oozeer , Bruce A. Bassett

Modern radio telescope surveys, capable of detecting billions of galaxies in wide-field surveys, have made manual morphological classification impracticable. This applies in particular when the Square Kilometre Array Observatory (SKAO)…

Astrophysics of Galaxies · Physics 2026-01-09 Philipp Denzel , Manuel Weiss , Elena Gavagnin , Frank-Peter Schilling

We present a search, using the Murchison Widefield Array (MWA), for electromagnetic counterparts to two candidate high energy neutrino events detected by the ANTARES neutrino telescope in 2013 November and 2014 March. These events were…

High Energy Astrophysical Phenomena · Physics 2016-04-06 S. Croft , D. L. Kaplan , S. J. Tingay , T. Murphy , M. E. Bell , A. Rowlinson , S. Adrian-Martinez , M. Ageron , A. Albert , M. Andre , G. Anton , M. Ardid , J. -J. Aubert , T. Avgitas , B. Baret , J. Barrios-Marti , S. Basa , V. Bertin , S. Biagi , R. Bormuth , M. C. Bouwhuis , R. Bruijn , J. Brunner , J. Busto , A. Capone , L. Caramete , J. Carr , T. Chiarusi , M. Circella , A. Coleiro , R. Coniglione , H. Costantini , P. Coyle , A. Creusot , I. Dekeyser , A. Deschamps , G. De Bonis , C. Distefano , C. Donzaud , D. Dornic , D. Drouhin , T. Eberl , I. El Bojaddaini , D. Elsasser , A. Enzenhofer , K. Fehn , I. Felis , P. Fermani , L. A. Fusco , S. Galata , P. Gay , S. Geisselsoder , K. Geyer , V. Giordano , A. Gleixner , H. Glotin , R. Gracia-Ruiz , K. Graf , S. Hallmann , H. van Haren , A. J. Heijboer , Y. Hello , J. J. Hernandez-Rey , J. Hossl , J. Hofestadt , C. Hugon , C. W James , M. de Jong , M. Kadler , O. Kalekin , U. Katz , D. Kiessling , P. Kooijman , A. Kouchner , M. Kreter , I. Kreykenbohm , V. Kulikovskiy , C. Lachaud , R. Lahmann , D. Lefevre , E. Leonora , S. Loucatos , M. Marcelin , A. Margiotta , A. Marinelli , J. A. Martinez-Mora , A. Mathieu , T. Michael , P. Migliozzi , A. Moussa , C. Mueller , E. Nezri , G. E. Pavalas , C. Pellegrino , C. Perrina , P. Piattelli , V. Popa , T. Pradier , C. Racca , G. Riccobene , K. Roensch , M. Saldana , D. F. E. Samtleben , A. Sanchez-Losa , M. Sanguineti , P. Sapienza , J. Schmid , J. Schnabel , F. Schussler , T. Seitz , C. Sieger , M. Spurio , J. J. M. Steijger , T. Stolarczyk , M. Taiuti , C. Tamburini , A. Trovato , M. Tselengidou , D. Turpin , C. Tonnis , B. Vallage , C. Vallee , V. Van Elewyck , E. Visser , D. Vivolo , S. Wagner , J. Wilms , J. D. Zornoza , J. Zuniga , A. Klotz , M. Boer , A. Le Van Suu , C. Akerlof , W. Zheng

This article introduces a new method to improve the dependability of millimeter-wave (mmWave) and terahertz (THz) network services in dynamic outdoor environments. In these settings, line-of-sight (LoS) connections are easily interrupted by…

Networking and Internet Architecture · Computer Science 2023-07-14 Mohammad Al-Quraan , Ahmed Zoha , Anthony Centeno , Haythem Bany Salameh , Sami Muhaidat , Muhammad Ali Imran , Lina Mohjazi

The Murchison Widefield Array is a low-frequency Square Kilometre Array precursor located at the Murchison Radio-astronomy Observatory in Western Australia. Primarily designed as an imaging telescope, but with a flexible signal path, the…

Instrumentation and Methods for Astrophysics · Physics 2019-08-15 S. M. Ord , S. E. Tremblay , S. J. McSweeney , N. D. R. Bhat , C. Sobey , D. A. Mitchell , P. J. Hancock , F. Kirsten

We study the impact of instrumental systematics on the variance, skewness, and kurtosis of redshifted 21 cm intensity fluctuation observations from the Epoch of Reionization. We simulate realistic 21 cm observations based on the Murchison…

Cosmology and Nongalactic Astrophysics · Physics 2016-10-20 Piyanat Kittiwisit , Judd D. Bowman , Daniel C. Jacobs , Nithyanandan Thyagarajan , Adam P. Beardsley

We show that the Laser Interferometer Gravitational Wave Observatory (LIGO) is a powerful instrument in the Search for Extraterrestrial Intelligence (SETI). LIGO's ability to detect gravitational waves (GWs) from astrophysical sources, such…

Instrumentation and Methods for Astrophysics · Physics 2022-12-27 Luke Sellers , Alexey Bobrick , Gianni Martire , Michael Andrews , Manfred Paulini

Multiple-input multiple-output (MIMO) techniques can help in scaling the achievable air-to-ground (A2G) channel capacity while communicating with drones. However, spatial multiplexing with drones suffers from rank deficient channels due to…

Signal Processing · Electrical Eng. & Systems 2021-08-05 Ender Ozturk , Chethan Kumar Anjinappa , Fatih Erden , Ismail Guvenc , Huaiyu Dai , Arupjyoti Bhuyan