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This white paper demonstrates that reverse engineering Unidentified Aerial Phenomena (UAP) is NP-complete under classical computational paradigms. By modeling UAP reconstruction as an automaton identification problem with a state…

Computational Complexity · Computer Science 2025-05-02 Karim Daghbouche

Scientific investigation of Unidentified Anomalous Phenomena (UAP) is limited by poor data quality and a lack of transparency. Existing data are often fragmented, uncalibrated, and missing critical metadata. To address these limitations,…

Auroras are emissions in a planetary atmosphere caused by its interactions with the surrounding plasma environment. They have been observed in most planets and some moons of the solar system. Since their first discovery in 2005, Mars…

Earth and Planetary Astrophysics · Physics 2022-12-28 Dimitra Atri , Dattaraj B. Dhuri , Mathilde Simoni , Katepalli R. Sreenivasan

The goal of Unsupervised Anomaly Detection (UAD) is to detect anomalous signals under the condition that only non-anomalous (normal) data is available beforehand. In UAD under Domain-Shift Conditions (UAD-S), data is further exposed to…

Sound · Computer Science 2021-10-19 Andres Fernandez , Mark D. Plumbley

Unmanned aircraft systems (UAS), or unmanned aerial vehicles (UAVs), often referred to as drones, have been experiencing healthy growth in the United States and around the world. The positive uses of UAS have the potential to save lives,…

Signal Processing · Electrical Eng. & Systems 2021-05-03 Jian Wang , Yongxin Liu , Houbing Song

The goal of the Pierre Auger Observatory is to determine the still unknown nature and origin of ultra-high energy cosmic rays. The study of these elusive particles probes astrophysical sites of particle acceleration as well as fundamental…

Astrophysics · Physics 2007-05-23 Andreas Zech

Unmanned Aerial Vehicles (UAV) can pose a major risk for aviation safety, due to both negligent and malicious use. For this reason, the automated detection and tracking of UAV is a fundamental task in aerial security systems. Common…

Computer Vision and Pattern Recognition · Computer Science 2022-11-23 Brian K. S. Isaac-Medina , Matt Poyser , Daniel Organisciak , Chris G. Willcocks , Toby P. Breckon , Hubert P. H. Shum

Unmanned aerial vehicle (UAV) is becoming increasingly important in modern civilian and military applications. However, its novel use cases is bottlenecked by conventional satellite and terrestrial localization technologies, and calling for…

Signal Processing · Electrical Eng. & Systems 2024-01-10 Bin Han , Hans D. Schotten

Most major discoveries in astronomy are unplanned, and result from surveying the Universe in a new way, rather than by testing a hypothesis or conducting an investigation with planned outcomes. For example, of the 10 greatest discoveries…

Instrumentation and Methods for Astrophysics · Physics 2017-02-08 Ray P Norris

To detect unmanned aerial vehicles (UAVs) in real-time, computer vision and deep learning approaches are evolving research areas. Interest in this problem has grown due to concerns regarding the possible hazards and misuse of employing UAVs…

Computer Vision and Pattern Recognition · Computer Science 2023-12-06 Adnan Munir , Abdul Jabbar Siddiqui , Saeed Anwar

The Gimbal video is a well-known footage of unidentified anomalous phenomena (UAP). Recorded in January 2015 off the coast of Florida by a U.S. Navy F/A-18F Super Hornet's targeting pod, the video shows an infrared-significant object…

Atmospheric and Oceanic Physics · Physics 2023-11-16 Yannick Peings , Marik von Rennenkampff

Existing and future wide-field photometric surveys will produce a time-lapse movie of the sky that will revolutionize our census of variable and moving astronomical and atmospheric phenomena. As with any revolution in scientific measurement…

Instrumentation and Methods for Astrophysics · Physics 2013-04-01 James R. A. Davenport

Unmanned aerial vehicles (UAVs) provide a novel means of extracting road and traffic information from video data. In particular, by analyzing objects in a video frame, UAVs can detect traffic characteristics and road incidents. Leveraging…

Applications · Statistics 2021-10-06 Cesar N. Yahia , Shannon E. Scott , Stephen D. Boyles , Christian G. Claudel

Distance-based methods involve the computation of distance values between features and are a well-established paradigm in machine learning. In anomaly detection, anomalies are identified by their large distance from normal data points.…

Instrumentation and Methods for Astrophysics · Physics 2025-10-29 Siddharth Chaini , Federica B. Bianco , Ashish Mahabal

A network of unmanned aerial vehicles (UAVs) provides distributed coverage, reconfigurability, and maneuverability in performing complex cooperative tasks. However, it relies on wireless communications that can be susceptible to cyber…

Systems and Control · Electrical Eng. & Systems 2023-10-27 Rayan Bahrami , Hamidreza Jafarnejadsani

Unmanned Aerial Vehicles (UAVs) are one of the most revolutionary inventions of 21st century. At the core of a UAV lies the central processing system that uses wireless signals to control their movement. The most popular UAVs are…

Computer Vision and Pattern Recognition · Computer Science 2025-06-09 Mohit Arora , Pratyush Shukla , Shivali Chopra

The ultraviolet (UV) window has been largely unexplored through balloons for astronomy. We discuss here the development of a compact near-UV spectrograph with fiber optics input for balloon ights. It is a modified Czerny-Turner system built…

Instrumentation and Methods for Astrophysics · Physics 2016-10-03 A. G. Sreejith , Joice Mathew , Mayuresh Sarpotdar , K. Nirmal , S. Ambily , Ajin Prakash , Margarita Safonova , Jayant Murthy

Every field of Science is undergoing unprecedented changes in the discovery process, and Astronomy has been a main player in this transition since the beginning. The ongoing and future large and complex multi-messenger sky surveys impose a…

Instrumentation and Methods for Astrophysics · Physics 2021-05-12 Maurizio D'Addona , Giuseppe Riccio , Stefano Cavuoti , Crescenzo Tortora , Massimo Brescia

We propose the concept of a space mission to probe the so called flyby anomaly, an unexpected velocity change experienced by some deep-space probes using earth gravity assists. The key feature of this proposal is the use of GNSS systems to…

Space Physics · Physics 2014-08-28 O. Bertolami , F. Francisco , P. J. S. Gil , J. Páramos

Unmanned Aerial Vehicles (UAVs) equipped with high-resolution sensors enable extensive data collection from previously inaccessible areas at a remarkable spatio-temporal scale, promising to revolutionize fields such as precision agriculture…

Robotics · Computer Science 2024-07-19 Harnaik Dhami