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Solar-induced chlorophyll fluorescence (SIF) has emerged as an effective indicator of vegetation productivity and plant health. The global quantification of SIF and its associated uncertainties yields many important capabilities, including…

Astronomy has long had a working network of archives supporting the curation of publications and data. The discipline has already created many of the features which perplex other areas of science: (1) data repositories: (supra)national…

Instrumentation and Methods for Astrophysics · Physics 2011-12-08 Alberto Accomazzi , Sebastien Derriere , Chris Biemesderfer , Norman Gray

The B fields in OB stars (BOB) survey is an ESO large programme collecting spectropolarimetric observations for a large number of early-type stars in order to study the occurrence rate, properties, and ultimately the origin of magnetic…

Satellite observation scheduling plays a significant role in improving the efficiency of Earth observation systems. To solve the large-scale multi-satellite observation scheduling problem, this paper proposes an ensemble of meta-heuristic…

Instrumentation and Methods for Astrophysics · Physics 2024-10-30 Guohua Wu , Qizhang Luo , Xiao Du , Xinwei Wang , Yinguo Chen , Ponnuthurai Nagaratnam Suganthan

Earth observation satellites (EOSs) play a pivotal role in capturing and analyzing planetary phenomena, ranging from natural disasters to societal development. The EOS scheduling problem (EOSSP), which optimizes the schedule of EOSs, is…

Optimization and Control · Mathematics 2026-03-30 Brycen D. Pearl , Joseph M. Miller , Hang Woon Lee

The impact of mega-constellations of satellites in low-Earth orbit during nighttime optical observations is assessed. Orbital geometry is used to calculate the impact of stellar occultations by satellites on the photometry of individual…

Instrumentation and Methods for Astrophysics · Physics 2022-11-09 Paul J. Groot

Radio telescopes observe extremely faint emission from astronomical objects, ranging from compact sources to large scale structures that can be seen across the whole sky. Satellites actively transmit at radio frequencies (particularly at…

Instrumentation and Methods for Astrophysics · Physics 2025-04-17 M. Peel , S. Eggl , M. L. Rawls , H. Qiu , D. L. Clements

Since the previous (1990) edition of this meeting enormous progress in the field of OB associations has been made. Data from X-ray satellites have greatly advanced the study of the low-mass stellar content of associations, while astrometric…

The calibration of ground-based submillimetre observations has always been a difficult process. We discuss how to overcome the limitations imposed by the submillimetre atmosphere. Novel ways to improve line-of-sight opacity estimates are…

How do we as a community encourage the reuse of software for telescope operations, data processing, and calibration? How can we support making codes used in research available for others to examine? Continuing the discussion from last year…

Instrumentation and Methods for Astrophysics · Physics 2013-12-31 Peter Teuben , Alice Allen , Bruce Berriman , Kimberly DuPrie , Robert J. Hanisch , Jessica Mink , Robert Nemiroff , Lior Shamir , Keith Shortridge , Mark Taylor , John Wallin

Forecasting optical turbulence in the Earth's atmosphere has been an ambitious challenge for the astronomical scientific community for several decades. While earlier research primarily focused on whether it was possible to predict optical…

Instrumentation and Methods for Astrophysics · Physics 2025-10-27 Elena Masciadri , Alessio Turchi , Camilo Weinberger , Marlene De Sepibus , Luca Fini

SOFIA, the Stratospheric Observatory For Infrared Astronomy mounted on-board a Boeing 747SP will open a new era in MIR/FIR astronomy. Starting in 2002, SOFIA will offer German and American astronomers a unique platform, providing regular…

Astrophysics · Physics 2007-05-23 Alfred Krabbe , Hans-Peter Roeser

In Low Earth Orbit (LEO) mega constellations, there are relevant use cases, such as inference based on satellite imaging, in which a large number of satellites collaboratively train a machine learning model without sharing their local…

Signal Processing · Electrical Eng. & Systems 2023-06-06 Nasrin Razmi , Bho Matthiesen , Armin Dekorsy , Petar Popovski

Multi-uncrewed aerial vehicle (UAV) cooperative perception has emerged as a promising paradigm for diverse low-altitude economy applications, where complementary multi-view observations are leveraged to enhance perception performance via…

Computer Vision and Pattern Recognition · Computer Science 2026-03-19 Yunting Xu , Jiacheng Wang , Ruichen Zhang , Changyuan Zhao , Yinqiu Liu , Dusit Niyato , Liang Yu , Haibo Zhou , Dong In Kim

The IACOB spectroscopic survey of Galactic OB stars is an ambitious observational project aimed at compiling a large, homogeneous, high-resolution database of optical spectra of massive stars observable from the Northern hemisphere. The…

Solar and Stellar Astrophysics · Physics 2011-09-14 S. Simón-Díaz , M. Garcia , A. Herrero , J. Maíz Apellániz , I. Negueruela

We aim to provide satellite operators and researchers with an efficient means for evaluating and mitigating collision risk during the design process of mega-constellations. We first establish a baseline for evaluating various techniques for…

Earth and Planetary Astrophysics · Physics 2021-05-12 Nathan Reiland , Aaron J. Rosengren , Renu Malhotra , Claudio Bombardelli

Agile satellites with advanced attitude maneuvering capability are the new generation of Earth observation satellites (EOSs). The continuous improvement in satellite technology and decrease in launch cost have boosted the development of…

Instrumentation and Methods for Astrophysics · Physics 2021-09-08 Xinwei Wang , Guohua Wu , Lining Xing , Witold Pedrycz

Low Earth Orbit (LEO) constellations, each comprising a large number of satellites, have become a new source of big data "from the sky". Downloading such data to a ground station (GS) for big data analytics demands very high bandwidth and…

Machine Learning · Computer Science 2022-12-23 Mohamed Elmahallawy , Tie Luo

Bundle adjustment (BA) is a technique for refining sensor orientations of satellite images, while adjustment accuracy is correlated with feature matching results. Feature match-ing often contains high uncertainties in weak/repeat textures,…

Computer Vision and Pattern Recognition · Computer Science 2021-07-02 Xiao Ling , Xu Huang , Rongjun Qin

A spectrum-sharing satellite-ground integrated network is conceived, consisting of a pair of non-geostationary orbit (NGSO) constellations and multiple terrestrial base stations, which impose the co-frequency interference (CFI) on each…

Information Theory · Computer Science 2024-01-31 Xiaojin Ding , Yue Lei , Yulong Zou , Gengxin Zhang , Lajos Hanzo