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We describe new results from the semiconductor-laser tracking frequency gauge, an instrument that can perform sub-picometer distance measurements and has applications in gravity research and in space-based astronomical instruments proposed…

Instrumentation and Methods for Astrophysics · Physics 2018-03-23 D. M. Kaplan , T. J. Roberts , J. D. Phillips , R. D. Reasenberg

A wide gamut of important applications rely on global navigation satellite systems (GNSS) for precise time and positioning. Attackers dictating the GNSS receiver position and time solution are a significant risk, especially due to the…

Cryptography and Security · Computer Science 2022-02-25 M. Spanghero , P. Papadimitratos

Many operations in power grids, such as fault detection and event location estimation, depend on precise timing information. In this paper, a novel Time Synchronization Attack (TSA) is proposed to attack the timing information in smart…

Cryptography and Security · Computer Science 2012-04-03 Zhenghao Zhang , Shuping Gong , Aleksandar D. Dimitrovski , Husheng Li

Location tracking with global navigation satellite systems (GNSS), such as the GPS, is used in many applications, including the tracking of wild animals for research. Snapshot GNSS is a technique that only requires milliseconds of satellite…

Systems and Control · Electrical Eng. & Systems 2023-02-15 Jonas Beuchert , Amanda Matthes , Alex Rogers

We present a general framework for improving and extending GNSS-based positioning by leveraging opportunistic measurements from legacy terrestrial radio signals. The proposed approach requires only that participating nodes collect and share…

Networking and Internet Architecture · Computer Science 2014-08-05 Fabio Ricciato

Gamma-Flash is an Italian project funded by the Italian Space Agency (ASI) and led by the National Institute for Astrophysics (INAF), devoted to the observation and study of high-energy phenomena, such as terrestrial gamma-ray flashes and…

The delay in arrival time of the multiple images of gravitationally lensed supernovae (glSNe) can be related to the present-day expansion rate of the universe, $H_{0}$. Despite their rarity, Rubin Observatory's Legacy Survey of Space and…

Instrumentation and Methods for Astrophysics · Physics 2026-02-16 Erin E. Hayes , Suhail Dhawan , Stephen Thorp , Justin D. R. Pierel , Nikki Arendse

Traditional soil sampling and analysis methods are labor-intensive, time-consuming, and limited in spatial resolution, making them unsuitable for large-scale precision agriculture. To address these limitations, we present a robotic solution…

With the growing complexity of Cyber-Physical Systems (CPS) and the integration of Internet of Things (IoT), the use of sensors for online monitoring generates large volume of multivariate time series (MTS) data. Consequently, the need for…

Machine Learning · Computer Science 2026-02-04 Charalampos Shimillas , Kleanthis Malialis , Konstantinos Fokianos , Marios M. Polycarpou

Constantly locating moving objects, i.e., geospatial tracking, is essential for autonomous building infrastructure. Accurate and robust geospatial tracking often leverages multimodal sensor fusion algorithms, which require large datasets…

We present a framework for inference for spatial processes that have actual values imperfectly represented by data. Environmental processes represented as spatial fields, either at fixed time points, or aggregated over fixed time periods,…

Methodology · Statistics 2016-09-27 Benjamin D. Youngman , David B. Stephenson

In this paper, a software implementation that records Global Positioning System (GPS) and long-range navigation (Loran) measurement data output from an integrated GPS/Loran receiver and organizes them based on time is proposed. The purpose…

Signal Processing · Electrical Eng. & Systems 2020-12-17 Woohyun Kim , Pyo-Woong Son , Joon Hyo Rhee , Jiwon Seo

Dynamic race detection based on the happens before (HB) partial order has now become the de facto approach to quickly identify data races in multi-threaded software. Most practical implementations for detecting these races use timestamps to…

Programming Languages · Computer Science 2025-04-10 Minjian Zhang , Daniel Wee Soong Lim , Mosaad Al Thokair , Umang Mathur , Mahesh Viswanathan

As TESLA-enabled GNSS for authenticated positioning reaches ubiquity, receivers must use an onboard, GNSS-independent clock and carefully constructed time synchronization algorithms to assert the authenticity afforded. This work provides…

Cryptography and Security · Computer Science 2025-03-19 Jason Anderson , Sherman Lo , Todd Walter

We are experimentally investigating possible violations of standard quantum mechanics predictions in the Gran Sasso underground laboratory in Italy. We test with high precision the Pauli Exclusion Principle and the collapse of the wave…

This paper presents two industry-grade datasets captured during an 8-hour continuous operation of the manufacturing assembly line at the Future Factories Lab, University of South Carolina, on 08/13/2024. The datasets adhere to industry…

The on-board Scientific Trigger Unit (UTS) is designed to detect Gamma Ray Bursts (GRBs) in real-time, using the data produced by the ECLAIRs camera, foreseen to equip the future French-Chinese satellite mission SVOM (Space-based Variable…

Instrumentation and Methods for Astrophysics · Physics 2014-12-01 Stéphane Schanne , Hervé Le Provost , Pierre Kestener , Aleksandra Gros , Marin Cortial , Diego Götz , Patrick Sizun , Frédéric Château , Bertrand Cordier

This paper investigates postmortem timestamp reconstruction in environmental monitoring networks. In the absence of a time-synchronization protocol, these networks use multiple pairs of (local, global) timestamps to retroactively estimate…

Numerical Analysis · Mathematics 2024-12-20 Jayant Gupchup , Răzvan Musăloiu-E. , Alex Szalay , Andreas Terzis

Lunar laser ranging provides a number of leading experimental tests of gravitation -- important in our quest to unify General Relativity and the Standard Model of physics. The Apache Point Observatory Lunar Laser-ranging Operation (APOLLO)…

The Global Positioning System (GPS), one of the Global Navigation Satellite Systems (GNSS), provides accurate position, navigation and time (PNT) information to various applications. One of the application that is highly receiving attention…

Systems and Control · Electrical Eng. & Systems 2025-01-24 Seunghyeon Park , Joon Hyo Rhee