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In this study, we perform a statistical analysis of the radar cross section (RCS) for various test targets in an indoor factory at \(25\)-\(28\) GHz, with the goal of formulating parameters that may be used for target identification and…

Signal Processing · Electrical Eng. & Systems 2025-02-18 Ali Waqar Azim , Ahmad Bazzi , Roberto Bomfin , Nikolaos Giakoumidis , Theodore S. Rappaport , Marwa Chafii

This paper presents an innovative framework for remote sensing image analysis by fusing deep learning techniques, specifically Convolutional Neural Networks (CNNs) and Long Short-Term Memory (LSTM) networks, with Geographic Information…

Computer Vision and Pattern Recognition · Computer Science 2024-12-31 Sajjad Afroosheh , Mohammadreza Askari

Global Navigation Satellite Systems (GNSS) provide standalone precise navigation for a wide gamut of applications. Nevertheless, applications or systems such as unmanned vehicles (aerial or ground vehicles and surface vessels) generally…

Cryptography and Security · Computer Science 2025-03-27 Marco Spanghero , Panos Papadimitratos

IAU 2000 resolutions on the reference frames set up a solid theoretical foundation for implementing general relativity in astronomical data processing algorithms and for unambiguous interpretation of measured relativistic effects. We…

Instrumentation and Methods for Astrophysics · Physics 2010-12-07 Sergei Kopeikin

Astrophysical space missions deliver invaluable information about our universe, stellar dynamics of our galaxy, and motion of celestial bodies in the solar system. Astrometric space missions SIM and Gaia will determine distances to stars…

Astrophysics · Physics 2008-11-26 Sergei Kopeikin

The growing field of large-scale time domain astronomy requires methods for probabilistic data analysis that are computationally tractable, even with large datasets. Gaussian Processes are a popular class of models used for this purpose…

Instrumentation and Methods for Astrophysics · Physics 2017-11-15 Daniel Foreman-Mackey , Eric Agol , Sivaram Ambikasaran , Ruth Angus

We present GausSN, a Bayesian semi-parametric Gaussian Process (GP) model for time-delay estimation with resolved systems of gravitationally lensed supernovae (glSNe). GausSN models the underlying light curve non-parametrically using a GP.…

Cosmology and Nongalactic Astrophysics · Physics 2024-09-05 Erin E. Hayes , Stephen Thorp , Kaisey S. Mandel , Nikki Arendse , Matthew Grayling , Suhail Dhawan

GNSS is unreliable, inaccurate, and insufficient in many real-time autonomous field applications. In this work, we present a GNSS-free global localization solution that contains a method of registering imaging radar on the ground with…

Robotics · Computer Science 2025-04-23 Blerim Abdullai , Tony Wang , Xinyuan Qiao , Florian Shkurti , Timothy D. Barfoot

In decision-making systems, it is important to have classifiers that have calibrated uncertainties, with an optimisation objective that can be used for automated model selection and training. Gaussian processes (GPs) provide uncertainty…

Machine Learning · Statistics 2020-03-05 Vincent Dutordoir , Mark van der Wilk , Artem Artemev , James Hensman

Gaussian belief propagation (GaBP) is a technique that relies on linearized error and input-output models to yield low-complexity solutions to complex estimation problems, which has been recently shown to be effective in the design of…

Signal Processing · Electrical Eng. & Systems 2026-02-05 Niclas Führling , Hyeon Seok Rou , Giuseppe Abreu , David González G. , Osvaldo Gonsa

This paper presents an adaptive observer-based navigation strategy for spacecraft in Circular Relative Orbit (CRO) scenarios, addressing challenges in proximity operations like formation flight and uncooperative target inspection. The…

Robotics · Computer Science 2025-09-03 Dario Ruggiero , Mauro Mancini , Elisa Capello

In this work, we propose a novel framework for large-scale Gaussian process (GP) modeling. Contrary to the global, and local approximations proposed in the literature to address the computational bottleneck with exact GP modeling, we employ…

Machine Learning · Statistics 2023-12-19 Akhil Vakayil , Roshan Joseph

We extend the scale-dependent Gaussian Streaming Model (GSM) to produce analytical predictions for the anisotropic redshift-space correlation function for biased tracers in modified gravity models. Employing the Convolution Lagrangian…

Cosmology and Nongalactic Astrophysics · Physics 2020-02-03 Georgios Valogiannis , Rachel Bean , Alejandro Aviles

This paper presents a lightweight, efficient calibration neural network model for denoising low-cost microelectromechanical system (MEMS) gyroscope and estimating the attitude of a robot in real-time. The key idea is extracting local and…

Robotics · Computer Science 2022-09-20 Yaohua Liu , Wei Liang , Jinqiang Cui

Respiratory motion during radiotherapy causes uncertainty in the tumor's location, which is typically addressed by an increased radiation area and a decreased dose. As a result, the treatments' efficacy is reduced. The recently proposed…

The last two decades have seen a major expansion in the availability, size, and precision of time-domain datasets in astronomy. Owing to their unique combination of flexibility, mathematical simplicity and comparative robustness, Gaussian…

Instrumentation and Methods for Astrophysics · Physics 2022-11-11 Suzanne Aigrain , Daniel Foreman-Mackey

We investigate the possibility that a statistical detection of the galaxy parallax shift due to the Earth's motion with respect to the CMB frame (cosmic secular parallax) could be made by the Vera C. Rubin Observatory Legacy Survey of Space…

Cosmology and Nongalactic Astrophysics · Physics 2020-12-16 Rupert A. C. Croft

Currently, digital maps are indispensable for automated driving. However, due to the low precision and reliability of GNSS particularly in urban areas, fusing trajectories of independent recording sessions and different regions is a…

Computer Vision and Pattern Recognition · Computer Science 2019-03-26 Haohao Hu , Marc Sons , Christoph Stiller

Global navigation satellite systems (GNSS) face significant challenges in urban and sub-urban areas due to non-line-of-sight (NLOS) propagation, multipath effects, and low received power levels, resulting in highly non-linear and…

Machine Learning · Computer Science 2025-04-22 M. Humayun Kabir , Md. Ali Hasan , Md. Shafiqul Islam , Kyeongjun Ko , Wonjae Shin

Galactic microlensing datasets now comprise in excess of $10^4$ events, and with the advent of next generation microlensing surveys that may be undertaken with facilities such as the Rubin Observatory (formerly LSST) and Roman Space…

Earth and Planetary Astrophysics · Physics 2020-09-30 David Specht , Eamonn Kerins , Supachai Awiphan , Annie C. Robin