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Precise localization is one key element of the Internet of Things (IoT). Especially concepts for position estimation when Global Navigation Satellite Systems (GNSS) are unavailable have moved into the focus. One crucial component for…

Distributed, Parallel, and Cluster Computing · Computer Science 2023-06-09 Thomas Maul , Sebastian Klob , Joerg Robert

Visual place recognition techniques based on deep learning, which have imposed themselves as the state-of-the-art in recent years, do not generalize well to environments visually different from the training set. Thus, to achieve top…

Computer Vision and Pattern Recognition · Computer Science 2023-03-15 Pierre-Yves Lajoie , Giovanni Beltrame

Among the various Ultra-wideband (UWB) ranging methods, the absence of uplink communication or centralized computation makes downlink time-difference-of-arrival (DL-TDOA) localization the most suitable for large-scale industrial…

Signal Processing · Electrical Eng. & Systems 2024-02-19 Sagnik Bhattacharya , Junyoung Choi , Joohyun Lee

In a time-division broadcast positioning system (TDBPS), localizing mobile targets using classical time difference of arrival (TDOA) methods poses significant challenges. Concurrent TDOA measurements are infeasible because targets receive…

Signal Processing · Electrical Eng. & Systems 2025-11-11 Chenxin Tu , Xiaowei Cui , Gang Liu , Sihao Zhao , Mingquan Lu

Distributed multiple-input multiple-output (D-MIMO) is a promising technology for simultaneous communication and positioning. However, phase synchronization between multiple access points in D-MIMO is challenging and methods that function…

This paper studies a networked sensing system with multiple base stations (BSs), which collaboratively sense the unknown and random three-dimensional (3D) location of a target based on the target-reflected echo signals received at the BSs.…

Information Theory · Computer Science 2025-09-09 Kaiyue Hou , Shuowen Zhang

Relative localization between autonomous robots without infrastructure is crucial to achieve their navigation, path planning, and formation in many applications, such as emergency response, where acquiring a prior knowledge of the…

The synergy between extremely large-scale antenna arrays and terahertz technology in sixth-generation networks establishes a near-field wideband transmission environment, enabling the generation of highly focused beams. To leverage this…

Signal Processing · Electrical Eng. & Systems 2026-03-18 Qianyu Yang , Haiyang Zhang , Francesco Guidi , Anna Guerra , Davide Dardari , Baoyun Wang , Yonina C. Eldar

Precise localization and tracking of moving non-collaborative persons and objects using a network of ultra-wideband (UWB) radar nodes has been shown to represent a practical and effective approach. In UWB radar sensor networks (RSNs),…

Signal Processing · Electrical Eng. & Systems 2021-08-03 B. Yan , A. Giorgetti , E. Paolini

This short communication addresses the problem of elliptic localization with outlier measurements. Outliers are prevalent in various location-enabled applications, and can significantly compromise the positioning performance if not…

Signal Processing · Electrical Eng. & Systems 2024-09-04 Wenxin Xiong , Yuming Chen , Jiajun He , Zhang-Lei Shi , Keyuan Hu , Hing Cheung So , Chi-Sing Leung

This paper focuses on static source localization employing different combinations of measurements, including time-difference-of-arrival (TDOA), received-signal-strength (RSS), angle-of-arrival (AOA), and time-of-arrival (TOA) measurements.…

Signal Processing · Electrical Eng. & Systems 2025-04-10 Kang Tang , Sheng Xu , Yuqi Yang , He Kong , Yongsheng Ma

For radio-based time-of-arrival (TOA) positioning systems applied in harsh environments, obstacles in the surroundings and on the vehicle itself will block the signals from the anchors, reduce the number of available TOA measurements and…

Signal Processing · Electrical Eng. & Systems 2022-07-19 Xinyuan An , Sihao Zhao , Xiaowei Cui , Gang Liu , Mingquan Lu

Passive geolocation by multiple unmanned aerial vehicles (UAVs) covers a wide range of military and civilian applications including rescue, wild life tracking and electronic warfare. The sensor-target geometry is known to significantly…

Signal Processing · Electrical Eng. & Systems 2022-08-09 Xin Cheng , Feng Shu , Yifan Li , Zhihong Zhuang , Di Wu , Jiangzhou Wang

Current trends in autonomous vehicles and their applications indicates an increasing need in positioning at low battery and compute cost. Lidars provide accurate localization at the cost of high compute and power consumption which could be…

Signal Processing · Electrical Eng. & Systems 2020-08-11 Rakshit Ramesh , Aaron John-Sabu , Harshitha S , Siddarth Ramesh , Vishwas Navada B , Mukunth Arunachalam , Bharadwaj Amrutur

This paper presents a novel 3DOF pedestrian trajectory prediction approach for autonomous mobile service robots. While most previously reported methods are based on learning of 2D positions in monocular camera images, our approach uses…

Computer Vision and Pattern Recognition · Computer Science 2017-10-03 Li Sun , Zhi Yan , Sergi Molina Mellado , Marc Hanheide , Tom Duckett

This paper presents an optimal calibration scheme and a weighted least squares (LS) localization algorithm for received signal strength (RSS) based visible light positioning (VLP) systems, focusing on the often overlooked impact of light…

Signal Processing · Electrical Eng. & Systems 2024-11-19 Fan Wu , Nobby Stevens , Lieven De Strycker , François Rottenberg

In urban areas, the quality of global navigation satellite system (GNSS) signals deteriorates, leading to reduced positioning accuracy. To address this issue, 3D-mapping-aided (3DMA) techniques, such as shadow matching and zonotope shadow…

Signal Processing · Electrical Eng. & Systems 2025-02-18 Sanghyun Kim , Jiwon Seo

This paper presents a trustworthy framework for achieving accurate cooperative localization in multiple unmanned aerial vehicle (UAV) systems. The The Cramer-Rao Lower Bound (CRLB) for the three-dimensional (3D) cooperative localization…

Signal Processing · Electrical Eng. & Systems 2025-03-27 Zexin Fang , Bin Han , Hans D. Schotten

Onboard simultaneous localization and mapping (SLAM) methods are commonly used to provide accurate localization information for autonomous robots. However, the coordinate origin of SLAM estimate often resets for each run. On the other hand,…

Robotics · Computer Science 2025-10-08 Tien-Dat Nguyen , Thien-Minh Nguyen , Vinh-Hao Nguyen

A popular method to estimate the positions or directions-of-arrival (DOAs) of multiple sound sources using an array of microphones is based on steered-response power (SRP) beamforming. For a three-dimensional scenario, SRP-based methods…

Audio and Speech Processing · Electrical Eng. & Systems 2026-04-21 Klaus Brümann , Simon Doclo