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This study aims at advancing mathematical and computational techniques for reconstructing the interior structure of a near earth asteroid (NEA) via Computed Radar Tomography (CRT). We introduce a far-field model for full-wave CRT and…

Instrumentation and Methods for Astrophysics · Physics 2018-03-30 Mika Takala , Patrick Bambach , Jakob Deller , Esa Vilenus , Manfred Wittig , Harald Lentz , Hans Martin Braun , Mikko Kaasalainen , Sampsa Pursiainen

We propose a metric called the bistatic radar detection coverage probability to evaluate the detection performance of a bistatic radar under discrete clutter conditions. Such conditions are commonly encountered in indoor and outdoor…

Signal Processing · Electrical Eng. & Systems 2022-01-25 Shobha Sundar Ram , Gourab Ghatak

This study concentrates on advancing mathematical and computational methodology for radar tomography imaging in which the unknown volumetric velocity distribution of a wave within a bounded domain is to be reconstructed. Our goal is to…

Instrumentation and Methods for Astrophysics · Physics 2018-04-04 Mika Takala , Defne Us , Sampsa Pursiainen

This article investigates reconstructing the internal mass density of a numerical asteroid model using the gradient of a simulated gravity field as synthetic measurement data. Our goal is to advance the mathematical inversion methodology…

Instrumentation and Methods for Astrophysics · Physics 2020-04-01 Liisa-Ida Sorsa , Mika Takala , Patrick Bambach , Jakob Deller , Esa Vilenius , Jessica Agarwal , Kieran A. Carroll , Özgür Karatekin , Sampsa Pursiainen

We propose a robust likelihood-ratio test (LRT) to detect landmines and unexploded ordnance using a forward-looking ground-penetrating radar. Instead of modeling the distributions of the target and clutter returns with parametric families,…

Signal Processing · Electrical Eng. & Systems 2021-11-18 Afief Dias Pambudi , Michael Fauß , Fauzia Ahmad , Abdelhak M. Zoubir

Multistatic ground-penetrating radar (GPR) signals can be imaged tomographically to produce three-dimensional distributions of image intensities. In the absence of objects of interest, these intensities can be considered to be estimates of…

This study conducts a quantitative distinguishability analysis using quasi-monostatic experimental radar data to find a topographic and backpropagated tomographic reconstruction for an analogue of asteroid Itokawa (25143). In particular, we…

In realistic radar tracking, target measurement uncertainty (TMU) in terms of both detection probability and measurement error covariance is significantly affected by the target-to-radar (T2R) geometry. However, existing posterior…

Signal Processing · Electrical Eng. & Systems 2024-10-10 Yifang Shi , Yu Zhang , Linjiao Fu , Dongliang Peng , Qiang Lu , Jee Woong Choi , Alfonso Farina

This paper proposes a novel approach to robust radar detection of range-spread targets embedded in Gaussian noise with unknown covariance matrix. The idea is to model the useful target echo in each range cell as the sum of a coherent signal…

Signal Processing · Electrical Eng. & Systems 2022-10-04 Angelo Coluccia , Alessio Fascista , Giuseppe Ricci

The problem of radar detection in compound Gaussian clutter when a radar signature is not completely known has not been considered yet and is addressed in this paper. We proposed a robust technique to detect, based on the generalized…

Signal Processing · Electrical Eng. & Systems 2017-10-10 Mai P. T. Nguyen , I. Song

Planetary radar observations offer the potential for probing the properties of characteristics of solid bodies throughout the inner solar system and at least as far as the orbit of Saturn. In addition to the direct scientific value, precise…

Earth and Planetary Astrophysics · Physics 2018-10-23 M. Brozovic , B. J. Butler , Jean-Luc Margot , Shantanu P. Naidu , T. Joseph W. Lazio

This paper introduces a novel methodology for generating controlled, multi-level dust concentrations in a highly cluttered environment representative of harsh, enclosed environments, such as underground mines, road tunnels, or collapsed…

Computer Vision and Pattern Recognition · Computer Science 2026-01-21 Zhenan Liu , Yaodong Cui , Amir Khajepour , George Shaker

This paper aims to reconstruct the internal structure of a two-dimensional test object via numerically simulated full-wave time domain radar tomography with the presence of wavelength-induced (WI) uncertainties, following from a complex…

Earth and Planetary Astrophysics · Physics 2022-07-06 Yusuf Oluwatoki Yusuf , Astrid Dufaure , Liisa-Ida Sorsa , Christelle Eyraud , Sampsa Pursiainen

Sparse and feature SLAM methods provide robust camera pose estimation. However, they often fail to capture the level of detail required for inspection and scene awareness tasks. Conversely, dense SLAM approaches generate richer scene…

Robotics · Computer Science 2025-05-16 Maaz Qureshi , Alexander Werner , Zhenan Liu , Amir Khajepour , George Shaker , William Melek

Autonomous driving simulators still lack high-fidelity radar, even though radar is critical for robust perception in adverse weather. A key obstacle is that raw radar point clouds are extremely sparse and stochastic, making it difficult to…

Signal Processing · Electrical Eng. & Systems 2026-05-26 Weiqing Xiao , Hao Huang , Chonghao Zhong , Yujie Lin , Nan Wang , Xiaoxue Chen , Zhaoxi Chen , Saining Zhang , Shuocheng Yang , Pierre Merriaux , Lei Lei , Hao Zhao

Fundamental research on bistatic radar reflectivity is highly relevant, e.g., to the upcoming mobile communication standard 6G, which includes integrated sensing and communication (ISAC). We introduce a model for correcting instrumentation…

Signal Processing · Electrical Eng. & Systems 2026-01-21 Alexander Ihlow , Marius Schmidt , Carsten Andrich , Reiner S. Thomä

Through-wall synthetic aperture radar (SAR) imaging is of significant interest for security purposes, in particular when using multi-static SAR systems consisting of multiple distributed radar transmitters and receivers to improve…

Numerical Analysis · Mathematics 2024-10-30 Francis Watson , Daniel Andre , William Robert Breckon Lionheart

We present a framework for simulating realistic inverse synthetic aperture radar images of automotive targets at millimeter wave frequencies. The model incorporates radar scattering phenomenology of commonly found vehicles along with…

Signal Processing · Electrical Eng. & Systems 2021-03-19 Neeraj Pandey , Shobha Sundar Ram

Geometric environment information aids future distributed radio infrastructures in providing services, such as ultra-reliable communication, positioning, and wireless power transfer (WPT). An a priori known environment model cannot always…

Signal Processing · Electrical Eng. & Systems 2023-05-10 Benjamin J. B. Deutschmann , Maximilian Graber , Thomas Wilding , Klaus Witrisal

Radar has gained much attention in autonomous driving due to its accessibility and robustness. However, its standalone application for depth perception is constrained by issues of sparsity and noise. Radar-camera depth estimation offers a…

Computer Vision and Pattern Recognition · Computer Science 2025-07-01 Fuyi Zhang , Zhu Yu , Chunhao Li , Runmin Zhang , Xiaokai Bai , Zili Zhou , Si-Yuan Cao , Fang Wang , Hui-Liang Shen
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