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High-rank line-of-sight (LOS) MIMO systems have attracted considerable attention for millimeter wave and THz communications. The small wavelengths in these frequencies enable spatial multiplexing with massive data rates at long distances.…

Signal Processing · Electrical Eng. & Systems 2023-04-18 Yaqi Hu , Mingsheng Yin , Sundeep Rangan , Marco Mezzavilla

The low-latitude ionosphere is a dynamic region with a wide range of disturbances in temporal and spatial scales. The Giant Metrewave Radio Telescope (GMRT) situated in the low-latitude region has demonstrated its ability to detect various…

Space Physics · Physics 2023-07-13 Sarvesh Mangla , Abhirup Datta

Solar contamination, due to moonlight and atmospheric scattering of sunlight, can cause systematic errors in stellar radial velocity (RV) measurements that significantly detract from the ~10cm/s sensitivity required for the detection and…

High-rate satellite communications among hundreds and even thousands of satellites deployed at low-Earth orbits (LEO) will be an important element of the forthcoming sixth-generation (6G) of wireless systems beyond 2030. With millimeter…

Networking and Internet Architecture · Computer Science 2024-10-28 Sergi Aliaga , Vitaly Petrov , Josep M. Jornet

Imaging Science Subsystem (ISS) mounted on the Cassini spacecraft has taken a lot of images, which provides an important source of high-precision astrometry of some planets and satellites. However, some of these images are degraded by…

Earth and Planetary Astrophysics · Physics 2023-03-15 Qing-Feng Zhang , Meng-Qi Liu , Yan Li , Lin-Peng Wu , Zhi-Qiang Wang , Li-Sha Zhu , Zhan Li

We discuss the extent to which photometric measurements alone can be used to identify Type Ia supernovae (SNIa) and to determine redshift and other parameters of interest for cosmological studies. We fit the light curve data of the type…

Cosmology and Nongalactic Astrophysics · Physics 2014-11-20 Yan Gong , Asantha Cooray , Xuelei Chen

Due to the strong dependency of our societies onGlobal Navigation Satellite Systems and their vulnerability to outages, there is an urgent need for additional navigation systems. A possible approach for such an additional system uses the…

Signal Processing · Electrical Eng. & Systems 2023-04-20 Winfried Stock , Christian A. Hofmann , Andreas Knopp

We investigate key aspects of coherent optical communications on inter-satellite links (ISLs) for the next-generation ultra-dense low-Earth orbit (LEO) constellations. Initially, the suitability of QPSK, 8-QAM, and 16-QAM modulation formats…

Signal Processing · Electrical Eng. & Systems 2023-07-06 I. P. Vieira , T. C. Pita , D. A. A. Mello

Abridged abstract: The Red MSX Source (RMS) survey is an ongoing effort to return a large, well-selected sample of massive young stellar objects (MYSOs) within our Galaxy. A series of ground-based follow-up observations are being undertaken…

The complete 10-year survey from the Large Synoptic Survey Telescope (LSST) will image $\sim$ 20,000 square degrees of sky in six filter bands every few nights, bringing the final survey depth to $r\sim27.5$, with over 4 billion well…

The Large Synoptic Survey Telescope (LSST) will be a large, wide-field ground-based system designed to obtain, starting in 2015, multiple images of the sky that is visible from Cerro Pachon in Northern Chile. About 90% of the observing time…

Astrophysics · Physics 2009-03-12 Z. Ivezic , T. Axelrod , A. C. Becker

This paper investigates the accuracy of recently proposed stochastic geometry-based modeling of low earth orbit (LEO) satellite networks. In particular, we use the Wasserstein Distance-inspired method to analyze the distances between…

Networking and Internet Architecture · Computer Science 2022-07-26 Ruibo Wang , Mustafa A. Kishk , Mohamed-Slim Alouini

We investigate a multi-low Earth orbit (LEO) satellite system that simultaneously provides positioning and communication services to terrestrial user terminals. To address the challenges of accurately acquiring channel state information in…

Signal Processing · Electrical Eng. & Systems 2026-01-21 Yuchen Zhang , Pinjun Zheng , Jie Ma , Henk Wymeersch , Tareq Y. Al-Naffouri

We describe a new concept to correct for scintillation noise on high-precision photometry in large and extremely large telescopes using telemetry data from adaptive optics (AO) systems. Most wide-field AO systems designed for the current…

Instrumentation and Methods for Astrophysics · Physics 2014-11-25 James Osborn

Double source plane strong lensing (DSPL) systems offer a robust, independent probe of cosmological parameters. The Chinese Space Station Telescope (CSST) is expected to discover hundreds of DSPLs, yet the survey modes and system…

Cosmology and Nongalactic Astrophysics · Physics 2026-01-22 Bei-Chen Wu , Xiaoyue Cao , Nan Li , Yan Gong , Shenzhe Cui , Di Wu , Tong Zhao , Junhui Yan

We present the results of a four-month campaign searching for low-frequency radio transients near the North Celestial Pole with the Low-Frequency Array (LOFAR), as part of the Multifrequency Snapshot Sky Survey (MSSS). The data were…

High Energy Astrophysical Phenomena · Physics 2016-06-21 A. J. Stewart , R. P. Fender , J. W. Broderick , T. E. Hassall , T. Muñoz-Darias , A. Rowlinson , J. D. Swinbank , T. D. Staley , G. J. Molenaar , B. Scheers , T. L. Grobler , M. Pietka , G. Heald , J. P. McKean , M. E. Bell , A. Bonafede , R. P. Breton , D. Carbone , Y. Cendes , A. O. Clarke , S. Corbel , F. de Gasperin , J. Eislöffel , H. Falcke , C. Ferrari , J. -M. Grießmeier , M. J. Hardcastle , V. Heesen , J. W. T. Hessels , A. Horneffer , M. Iacobelli , P. Jonker , A. Karastergiou , G. Kokotanekov , V. I. Kondratiev , M. Kuniyoshi , C. J. Law , J. van Leeuwen , S. Markoff , J. C. A. Miller-Jones , D. Mulcahy , E. Orru , M. Pandey-Pommier , L. Pratley , E. Rol , H. J. A. Röttgering , A. M. M. Scaife , A. Shulevski , C. A. Sobey , B. W. Stappers , C. Tasse , A. J. van der Horst , S. van Velzen , R. J. van Weeren , R. A. M. J. Wijers , R. Wijnands , M. Wise , P. Zarka , A. Alexov , J. Anderson , A. Asgekar , I. M. Avruch , M. J. Bentum , G. Bernardi , P. Best , F. Breitling , M. Brüggen , H. R. Butcher , B. Ciardi , J. E. Conway , A. Corstanje , E. de Geus , A. Deller , S. Duscha , W. Frieswijk , M. A. Garrett , A. W. Gunst , M. P. van Haarlem , M. Hoeft , J. Hörandel , E. Juette , G. Kuper , M. Loose , P. Maat , R. McFadden , D. McKay-Bukowski , J. Moldon , H. Munk , M. J. Norden , H. Paas , A. G. Polatidis , D. Schwarz , J. Sluman , O. Smirnov , M. Steinmetz , S. Thoudam , M. C. Toribio , R. Vermeulen , C. Vocks , S. J. Wijnholds , O. Wucknitz , S. Yatawatta

The Chinese Space Station Telescope (CSST) spectroscopic survey plans to deliver high-quality low-resolution ($R > 200$) slitless spectra for hundreds of millions of targets down to a limiting magnitude of about 21 mag, covering a large…

Instrumentation and Methods for Astrophysics · Physics 2021-06-02 Yang Sun , Dingshan Deng , Haibo Yuan

We present the detection of false positive double-lined spectroscopic binaries candidates (SB2) using medium-resolution survey (MRS) spectra from the one time-domain field of LAMOST data release 10 (DR10). The secondary component in all…

Solar and Stellar Astrophysics · Physics 2023-07-19 Mikhail Kovalev , Olivier R. Hainaut , Xuefei Chen , Zhanwen Han

We present forecasts for the $E_G$ statistic using redshift distributions of realistic mock galaxy samples from the upcoming Chinese Space Station Survey Telescope (CSST). The dominant uncertainty in $E_G$ stems from the redshift space…

Cosmology and Nongalactic Astrophysics · Physics 2026-01-27 Yu Song , Yi Zheng

Owing to the exceptional sensitivity of the Vera C. Rubin Observatory, we predict that its upcoming LSST images will be contaminated by numerous flares from centimeter-scale space debris in Low Earth Orbits (LEO). Millisecond-duration…

Instrumentation and Methods for Astrophysics · Physics 2024-01-31 Abraham Loeb