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In this paper, we consider a challenging secure wireless sensing scenario where a legitimate radar station (LRS) intends to detect a target at unknown location in the presence of an unauthorized radar station (URS). We aim to enhance the…

Information Theory · Computer Science 2023-08-08 Xiaodan Shao , Rui Zhang

We propose a design of an adaptive optics (AO) system for the high-resolution fiber-fed echelle spectrograph installed at the Nasmyth focus of the 6-m BTA telescope at the Special Astrophysical Observatory (SAO) of the Russian Academy of…

Instrumentation and Methods for Astrophysics · Physics 2022-08-17 Eduard Muslimov , Gennadiy Valyavin , Vincent Chambouleyron , Felipe Pedreros Bustos , Idir Boudjema

The facility adaptive optics of the Subaru Telescope AO188 recently received some long-awaited upgrades: a new 3224-actuator deformable mirror (DM) from ALPAO (hence the name change to AO3000 or AO3k), an upgraded GPU-based real-time…

Unmanned aerial vehicles (UAVs) have been successfully adopted to enhance the flexibility and robustness of wireless communication networks. And recently, the reconfigurable intelligent surface (RIS) technology has been paid increasing…

Systems and Control · Electrical Eng. & Systems 2023-01-02 Mohsen Eskandari , Hailong Huang , Andrey V. Savkin , Wei Ni

The wide-field spectroscopic survey telescope (WST) is proposed to become the next large optical/near infrared facility for the European Southern Observatory (ESO) once the Extremely Large Telescope (ELT) has become operational. While the…

Instrumentation and Methods for Astrophysics · Physics 2023-08-31 Roland Bacon , Martin M. Roth , Paola Amico , Eloy Hernandez , the WST Consortium

We present the first results from our Red Optical Planet Survey (ROPS) to search for low mass planets orbiting late type dwarfs (M5.5V - M9V) in their habitable zones (HZ). Our observations, with the red arm of the MIKE spectrograph (0.5 -…

Earth and Planetary Astrophysics · Physics 2015-06-04 J. R. Barnes , J. S. Jenkins , H. R. A. Jones , P. Rojo , P. Arriagada , A. Jordan , D. Minniti , M. Tuomi , S. V. Jeffers , D. Pinfield

A large wide-field telescope and camera with optical throughput over 200 m^2 deg^2 -- a factor of 50 beyond what we currently have -- would enable the detection of faint moving or bursting optical objects: from Earth threatening asteroids…

Astrophysics · Physics 2009-11-07 J. Anthony Tyson , the LSST Collaboration

RISTRETTO is a visible high-resolution spectrograph fed by an extreme adaptive optics (XAO) system, to be proposed as a visitor instrument on ESO VLT. The main science goal of RISTRETTO is the detection and atmospheric characterization of…

The Gaia mission is designed as a Galaxy explorer, and will measure simultaneously, in a survey mode, the five or six phase space parameters of all stars brighter than 20th magnitude, as well as providing a description of their…

Observations of astrophysical transients have brought many novel discoveries and provided new insights into physical processes at work under extreme conditions in the Universe. Multi-wavelength and multi-messenger observations of variable…

Instrumentation and Methods for Astrophysics · Physics 2022-10-19 C. Hoischen , M. Füßling , S. Ohm , A. Balzer , H. Ashkar , K. Bernlöhr , P. Hofverberg , T. L. Holch , T. Murach , H. Prokoph , F. Schüssler , S. J. Zhu , D. Berge , K. Egberts , C. Stegmann

This paper proposes a robust resource allocation framework for a low Earth orbit (LEO) satellite-enabled simultaneous wireless information and power transfer (SWIPT) system, assisted by a ground-deployed simultaneously transmitting and…

Signal Processing · Electrical Eng. & Systems 2025-09-03 Zahra Rostamikafaki , Francois Chan , Claude D'Amours

A method of near real-time detection and tracking of resident space objects (RSOs) using a convolutional neural network (CNN) and linear quadratic estimator (LQE) is proposed. Advances in machine learning architecture allow the use of…

Instrumentation and Methods for Astrophysics · Physics 2023-04-14 Jarred Jordan , Daniel Posada , Matthew Gillette , David Zuehlke , Troy Henderson

Large Scale Structures (LSS) in the universe can be traced using the neutral atomic hydrogen HI through its 21cm emission. Such a 3D matter distribution map can be used to test the Cosmological model and to constrain the Dark Energy…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-30 R. Ansari , J. E. Campagne , P. Colom , J. M. Le Goff , C. Magneville , J. M. Martin , M. Moniez , J. Rich , C. Yèche

We present results from the Large Adaptive optics Survey for Substellar Objects (LASSO), where the goal is to directly image new substellar companions (<70 M$_{Jup}$) at wide orbital separations ($\gtrsim$50 AU) around young ($\lesssim$300…

In the last few years, new Adaptive Optics [AO] techniques have emerged to answer new astronomical challenges: Ground-Layer AO [GLAO] and Multi-Conjugate AO [MCAO] to access a wider Field of View [FoV], Multi-Object AO [MOAO] for the…

Astrophysics · Physics 2009-11-11 B. Neichel , J-M. Conan , T. Fusco , E. Gendron , M. Puech , G. Rousset , F. Hammer

We provide an overview of the robotic Super-LOTIS (Livermore Optical Transient Imaging System) telescope and present results from gamma-ray burst (GRB) afterglow observations using Super-LOTIS and other Steward Observatory telescopes. The…

Astrophysics · Physics 2009-06-23 G. G. Williams , P. A. Milne , H. S. Park , S. D. Barthelmy , D. H. Hartmann , A. Updike , K. Hurley

The Tsinghua University-National Astronomical Observatories of China (NAOC) Transient Survey (TNTS) is an automatic survey for a systematic exploration of optical transients (OTs), conducted with a 60/90 cm Schmidt telescope at Xinglong…

Nowadays, there is growing interest in applying Artificial Intelligence (AI) on board Earth Observation (EO) satellites for time-critical applications, such as natural disaster response. However, the unavailability of raw satellite data…

Computer Vision and Pattern Recognition · Computer Science 2024-09-11 Gabriele Meoni , Roberto Del Prete , Federico Serva , Alix De Beussche , Olivier Colin , Nicolas Longépé

Adaptive optics is a technique mostly used on large telescopes. It turns out to be challenging for smaller telescopes (0.5~2m) due to the small isoplanatic angle, small subapertures and high correction speeds needed at visible wavelengths,…

Instrumentation and Methods for Astrophysics · Physics 2023-10-12 Olivier Lai , Mark Chun , Stefan Kuiper , Niek Doelman , Marcel Carbillet , Mamadou N'Diaye , Frantz Martinache , Lyu Abe , Jean-Pierre Rivet , Dirk Schmidt

Mergers of neutron stars (NS) and white dwarfs (WD) may give rise to observable explosive transient events. We use 3D hydrodynamical (SPH) simulations, as well as 2D hydrodynamical-thermonuclear simulations (using the FLASH AMR code) to…

Solar and Stellar Astrophysics · Physics 2020-02-26 Yossef Zenati , Alexey Bobrick , Hagai B. Perets
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