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This paper investigates joint device identification, channel estimation, and signal detection for LEO satellite-enabled grant-free random access, where a multiple-input multipleoutput (MIMO) system with orthogonal time-frequency space…

Information Theory · Computer Science 2023-08-08 Boxiao Shen , Yongpeng Wu , Wenjun Zhang , Symeon Chatzinotas , Björn Ottersten

The Simons Observatory (SO) is an upcoming polarized cosmic microwave background (CMB) survey experiment with three small-aperture telescopes and one large-aperture telescope that will observe from the Atacama Desert in Chile. In total, SO…

After proposing a new method of deriving the atmospheric time constant from the speed of focus variations (Kellerer & Tokovinin 2007), we now implement it with the new instrument, FADE. FADE uses a 36-cm Celestron telescope that is modified…

Astrophysics · Physics 2009-11-13 A. Tokovinin , A. Kellerer , V. Coude Du Foresto

PLAnetary Transits and Oscillations of stars (PLATO) is a medium-class mission belonging to the European Space Agency (ESA) Cosmic Vision programme. The mission payload is composed of 26 telescopes and cameras which will observe…

Instrumentation and Methods for Astrophysics · Physics 2018-08-30 M. Rotundo , A. Leoni , L. Serafini , C. Del Vecchio Blanco , D. Davalle , D. Vangelista , M. Focardi , R. Cosentino , S. Pezzuto , G. Giusi , D. Biondi , L. Fanucci

Earth observation (EO) satellite missions have been providing detailed images about the state of the Earth and its land cover for over 50 years. Long term missions, such as NASA's Landsat, Terra, and Aqua satellites, and more recently, the…

Computer Vision and Pattern Recognition · Computer Science 2024-10-27 Lynn Miller , Charlotte Pelletier , Geoffrey I. Webb

The impact of the expansion of a high-frequency radar (HFR) system in a dynamic coastal area (the Ibiza Channel in the Western Mediterranean Sea) is evaluated through an Observing System Simulation Experiment (OSSE). The installation of two…

Atmospheric and Oceanic Physics · Physics 2024-06-24 Jaime Hernandez Lasheras , Alejandro Orfila , Alex Santana , Ismael Hernandez Carrasco , Baptiste Mourre

To accurately estimate locations and velocities of surrounding targets (cars) is crucial for advanced driver assistance systems based on radar sensors. In this paper we derive methods for fusing data from multiple radar sensors in order to…

Signal Processing · Electrical Eng. & Systems 2019-08-08 Bin Zhu , Augusto Ferrante , Johan Karlsson , Mattia Zorzi

Capturing high resolution imagery of the Earth's surface often calls for a telescope of considerable size, even from Low Earth Orbits (LEO). A large aperture often requires large and expensive platforms. For instance, achieving a resolution…

Instrumentation and Methods for Astrophysics · Physics 2024-03-28 Maxime Dumont , Carlos M. Correia , Jean-François Sauvage , Noah Schwartz , Morgan Gray , Jaime Cardoso

Mini-EUSO is a space experiment selected to be installed inside the International Space Station. It has a compact telescope with a large field of view ($44 $\times$ 44$ sq. deg.) focusing light on an array of photo-multipliers tubes in…

Instrumentation and Methods for Astrophysics · Physics 2019-07-02 Sara Turriziani , Jonah Ekelund , Katsuhiko Tsuno , Marco Casolino , Toshikazu Ebisuzaki

We present the Solar system Objects Light curve Observatory (SOLO), a wide-field, high-cadence optical survey system designed to obtain absolutely calibrated asteroid light curves, converted to the Gaia G-band photometric system, in support…

Instrumentation and Methods for Astrophysics · Physics 2026-02-10 Bumhoo Lim , Seungwon Choi , Yoonsoo P. Bach , Masateru Ishiguro , Sunho Jin , Carey M. Lisse , Max Mahlke , Jooyeon Geem , Jinguk Seo , Sihu Ahn , Hangbin Jo

Visual Odometry (VO) and SLAM are fundamental components for spatial perception in mobile robots. Despite enormous progress in the field, current VO/SLAM systems are limited by their sensors' capability. Event cameras are novel visual…

Robotics · Computer Science 2025-05-28 Suman Ghosh , Valentina Cavinato , Guillermo Gallego

The amount of data generated by Earth observation satellites can be enormous, which poses a great challenge to the satellite-to-ground connections with limited rate. This paper considers problem of efficient downlink communication of…

Signal Processing · Electrical Eng. & Systems 2023-11-28 Van-Phuc Bui , Thinh Q. Dinh , Israel Leyva-Mayorga , Shashi Raj Pandey , Eva Lagunas , Petar Popovski

Sensor fusion is crucial for a performant and robust Perception system in autonomous vehicles, but sensor staleness, where data from different sensors arrives with varying delays, poses significant challenges. Temporal misalignment between…

Computer Vision and Pattern Recognition · Computer Science 2025-06-09 Meng Fan , Yifan Zuo , Patrick Blaes , Harley Montgomery , Subhasis Das

This report describes the methodology and results of an assessment study of the performance of the Large Synoptic Survey Telescope (LSST) in its planned efforts to detect and catalog near-Earth objects (NEOs). The baseline LSST survey…

Earth and Planetary Astrophysics · Physics 2017-05-18 Steven R. Chesley , Peter Veres

Fusing satellite imagery acquired with different sensors has been a long-standing challenge of Earth observation, particularly across different modalities such as optical and Synthetic Aperture Radar (SAR) images. Here, we explore the joint…

Computer Vision and Pattern Recognition · Computer Science 2022-11-30 Manu Tom , Yuchang Jiang , Emmanuel Baltsavias , Konrad Schindler

Observations that require large physical instrument dimensions and/or a considerable amount of cryogens, as it is for example the case for high spatial resolution far infrared astronomy, currently still face technological limits for their…

Estimating and understanding the surroundings of the vehicle precisely forms the basic and crucial step for the autonomous vehicle. The perception system plays a significant role in providing an accurate interpretation of a vehicle's…

Computer Vision and Pattern Recognition · Computer Science 2022-03-16 Sreenivasa Hikkal Venugopala

Motivated by automotive applications, we consider joint radar sensing and data communication for a system operating at millimeter wave (mmWave) frequency bands, where a Base Station (BS) is equipped with a co-located radar receiver and…

Signal Processing · Electrical Eng. & Systems 2022-07-13 Saeid K. Dehkordi , Lorenzo Gaudio , Mari Kobayashi , Giuseppe Caire , Giulio Colavolpe

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…

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