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TianQin is a proposed space-based mission for gravitational wave detection, employing a constellation of three drag-free satellites in high Earth orbits to form a laser interferometric observatory. A critical technical challenge is…

General Relativity and Quantum Cosmology · Physics 2025-10-21 Yuzhou Fang , Dexuan Zhang , Dezhi Wang , Xuefeng Zhang , Huizong Duan , Hongyin Li , Junxiang Lian , Guoying Zhao

Comparing data defined over space and time is notoriously hard, because it involves quantifying both spatial and temporal variability, while at the same time taking into account the chronological structure of data. Dynamic Time Warping…

Machine Learning · Statistics 2019-11-12 Hicham Janati , Marco Cuturi , Alexandre Gramfort

Fluid antenna (FA) technology has emerged as a promising approach in wireless communications due to its capability of providing increased degrees of freedom (DoFs) and exceptional design flexibility. This paper addresses the challenge of…

Signal Processing · Electrical Eng. & Systems 2025-08-15 He Xu , Tuo Wu , Ye Tian , Kangda Zhi , Wei Liu , Baiyang Liu , Hing Cheung So , Naofal Al-Dhahir , Kin-Fai Tong , Chan-Byoung Chae , Kai-Kit Wong

Time-of-arrival (TOA)-based localization in mixed line-of-sight (LOS) and non-line-of-sight (NLOS) environments is challenging because conventional Euclidean range models do not capture diffraction-dominated propagation. We show that the…

Signal Processing · Electrical Eng. & Systems 2026-04-30 Gaurav Duggal , Richard M. Buehrer , Harpreet S. Dhillon , Jeffrey H. Reed

Despite their high accuracy, UWB-based localization systems suffer inaccuracies when deployed in industrial locations with many obstacles due to multipath effects and non-line-of-sight (NLOS) conditions. In such environments, current error…

Signal Processing · Electrical Eng. & Systems 2025-07-08 Dieter Coppens , Adnan Shahid , Eli De Poorter

In this paper, we consider a time-varying optimization approach to the problem of tracking a moving target using noisy time-of-arrival (TOA) measurements. Specifically, we formulate the problem as that of sequential TOA-based source…

Optimization and Control · Mathematics 2022-01-19 Yuen-Man Pun , Anthony Man-Cho So

Nowadays, accurate localization plays an essential role in many fields, like target tracking and path planning. The challenges of indoor localization include inadequate localization accuracy, unreasonable anchor deployment in complex…

Systems and Control · Electrical Eng. & Systems 2021-12-10 Fengyun Zhang , Li Yang , Yuhuan Liu , Yulong Ding , Shuang-Hua Yang , Hao Li

Today, many applications such as production or rescue settings rely on highly accurate entity positioning. Advanced Time of Flight (ToF) based positioning methods provide highaccuracy localization of entities. A key challenge for ToF based…

Networking and Internet Architecture · Computer Science 2020-01-14 Maximilian von Tschirschnitz , Marcel Wagner , Marc-Oliver Pahl , Georg Carle

Lidar odometry has attracted considerable attention as a robust localization method for autonomous robots operating in complex GNSS-denied environments. However, achieving reliable and efficient performance on heterogeneous platforms in…

In this paper, we propose a two-stage weighted projection method (TS-WPM) for time-difference-of-arrival (TDOA)-based localization, providing provable improvements in positioning accuracy, particularly under high geometric dilution of…

Information Theory · Computer Science 2025-10-01 Harish K. Dureppagari , R. Michael Buehrer , Harpreet S. Dhillon

Source localization plays a key role in many applications including radar, wireless and underwater communications. Among various localization methods, the most popular ones are Time-Of-Arrival (TOA), Time-Difference-Of-Arrival (TDOA), and…

Signal Processing · Electrical Eng. & Systems 2022-03-07 Nitesh Sahu , Linlong Wu , Prabhu Babu , Bhavani Shankar M. R. , Björn Ottersten

Continuous Dynamic Time Warping (CDTW) is a robust similarity measure for polygonal curves that has recently found a variety of applications. Despite its practical use, not much is known about the algorithmic complexity of computing it in…

Computational Geometry · Computer Science 2026-05-08 Kevin Buchin , Maike Buchin , Jan Erik Swiadek , Sampson Wong

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

Optical two-way time-frequency transfer (O-TWTFT), employing linear optical sampling and based on frequency combs, is a promising approach for future large-scale optical clock synchronization. It offers the dual benefits of high temporal…

Angle of arrival (AOA) is widely used to locate a wireless signal emitter in unmanned aerial vehicle (UAV) localization. Compared with received signal strength (RSS) and time of arrival (TOA), it has higher accuracy and is not sensitive to…

Signal Processing · Electrical Eng. & Systems 2023-05-17 Baihua Shi , Yifan Li , Guilu Wu , Shihao Yan , Feng Shu

Localization and synchronization are very important in many wireless applications such as monitoring and vehicle tracking. Utilizing the same time of arrival (TOA) measurements for simultaneous localization and synchronization is…

Information Theory · Computer Science 2016-01-18 Weijie Yuan , Nan Wu , Bernhard Etzlinger , Hua Wang , Jingming Kuang

This paper considers N mobile nodes that move together in the vicinity of each other, whose initial poses as well as subsequent movements must be accurately tracked in real time with the assist of M(>=3) reference nodes. By engaging the…

Distributed, Parallel, and Cluster Computing · Computer Science 2011-08-04 Xingkai Bao , Jing Li

In the realm of intelligent transportation systems, accurate and reliable traffic monitoring is crucial. Traditional devices, such as cameras and lidars, face limitations in adverse weather conditions and complex traffic scenarios,…

Signal Processing · Electrical Eng. & Systems 2025-04-17 Linlin Wang , Shixin Wang , Peng Wang , Wei Wang , Dezhao Wang , Yongcai Wang , Shanwen Wang

Many applications require positioning. Time of Flight (ToF) methods calculate distances by measuring the propagation time of signals. We present a novel ToF localization method. Our new approach works infrastructure-less, without…

Networking and Internet Architecture · Computer Science 2020-01-14 Maximilian von Tschirschnitz , Marcel Wagner , Marc-Oliver Pahl , Georg Carle

In this paper, we introduce a family of novel sparse array designs called the augmented ULAs (AULAs) for the localization of non-circular signals (NCS). Accurate direction of arrival (DOA) estimation and the ability to resolve multiple…

Signal Processing · Electrical Eng. & Systems 2026-05-05 Abdul Hayee Shaikh , Xiaoguang Liu