Results 1 to 10 of about 90,878 (176)

A Vision-Assisted Acoustic Channel Modeling Framework for Smartphone Indoor Localization [PDF]

Sensors
Conventional acoustic time-of-arrival (TOA) estimation in complex indoor environments is highly susceptible to multipath reflections and occlusions, resulting in unstable measurements and limited physical interpretability.
Can Xue, Huixin Zhuge, Zhi Wang
doaj   +2 more sources

Robust Indoor Positioning with Smartphone by Utilizing Encoded Chirp Acoustic Signal [PDF]

Sensors
Recently, indoor positioning has been one of the hot topics in the field of navigation and positioning. Among different solutions on indoor positioning, positioning with acoustic signals has its promise due to its relatively high accuracy in the line of ...
Bingbing Cheng, Ying Huang, Chuanyi Zou
doaj   +2 more sources

Semidefinite Programming Algorithms for 3-D AOA-Based Hybrid Localization

IEEE Open Journal of Signal Processing, 2023
By taking different kinds of measurements at the same time, it may be possible to improve the accuracy of target localization or reduce the number of sensors needed.
Yanbin Zou
doaj   +1 more source

Self-Calibration for the Time-of-Arrival Positioning

IEEE Access, 2020
Self-calibration of time-of-arrival positioning systems is made difficult by the non-linearity of the relevant set of equations. This work applies dimension lifting to this problem.
Juri Sidorenko, Volker Schatz, Dimitri Bulatov, Norbert Scherer-Negenborn, Michael Arens, Urs Hugentobler   +5 more
doaj   +1 more source

ToA-TS: Time of arrival based joint time synchronization and tracking for mobile underwater systems [PDF]

Ad Hoc Networks, 2015
Time synchronization and localization are key requirements for distributed underwater systems consisting of numerous low-cost submersibles. In these systems, submersibles are highly resource constrained and typically have limited acoustic communication capability.
Yi, Jinwang, Mirza, Diba, Kastner, Ryan, Schurgers, Curt, Roberts, Paul, Jaffe, Jules   +5 more
openaire   +3 more sources

Time-of-arrival distributions from position-momentum and energy-time joint measurements [PDF]

, 1999
The position-momentum quasi-distribution obtained from an Arthurs and Kelly joint measurement model is used to obtain indirectly an ``operational'' time-of-arrival (TOA) distribution following a quantization procedure proposed by Kocha\'nski and W ...
A. D. Baute, A.D. Baute, A.J. Bracken, C.R. Leavens, D.M. Appleby, D.M. Appleby, E. Arthurs, E.B. Davies, G.R. Allcock, G.R. Allcock, G.R. Allcock, G.S. Agarwal, H. Martens, I. Egusquiza, I. L. Egusquiza, J. Finkelstein, J. G. Muga, J. Halliwell, J. Kijowski, J. Kijowski, J. Oppenheim, J. von Neumann, J.G. Muga, J.G. Muga, J.G. Muga, J.G. Muga, J.J. Halliwell, K. Wódkiewicz, L. Cohen, L. Cohen, L. Cohen, M. Toller, M.G. Raymer, P. Busch, P. Busch, P. Kochański, P. Kochański, P. Törmä, R. Sala, R. Sala Mayato, R. Werner, R. Werner, R.F. O’Connell, S. Stenholm, S.L. Braunstein, U. Leonhardt, V. Delgado, W.L. Power, Y. Aharonov, Y. Aharonov, Y. Aharonov   +50 more
core   +2 more sources

Statistical Characterization and Mitigation of NLOS Errors in UWB Localization Systems [PDF]

, 2011
In this paper some new experimental results about the statistical characterization of the non-line-of-sight (NLOS) bias affecting time-of-arrival (TOA) estimation in ultrawideband (UWB) wireless localization systems are illustrated.
Montorsi, Francesco, Pancaldi, Fabrizio, Vitetta, Giorgio M.   +2 more
core   +1 more source

A Fractional Programming Method for Target Localization in Asynchronous Networks

IEEE Access, 2018
In this paper, we address the target device localization problem in the asynchronous networks. For the purpose of saving power resources, the target device is not synchronized with the anchor nodes, but is only required to listen to the signals ...
Gang Wang, Nirwan Ansari, Youming Li
doaj   +1 more source

UWB pulse detection and TOA estimation using GLRT

EURASIP Journal on Advances in Signal Processing, 2017
In this paper, a novel statistical approach is presented for time-of-arrival (TOA) estimation based on first path (FP) pulse detection using a sub-Nyquist sampling ultra-wide band (UWB) receiver.
Yan Xie, Gerard J.M. Janssen, Siavash Shakeri, Christiaan C.J.M. Tiberius   +3 more
doaj   +1 more source

Hybrid TOA/AOA Positioning Algorithm Based on GDOP Weighting [PDF]

Jisuanji gongcheng, 2017
Existing Time of Arrival/Angle of Arrival(TOA/AOA) positioning algorithms based on Wireless Sensor Network(WSN) have low accuracy under the condition that the position of Anchor Nodes(AN) has error.
KONG Fanzeng,ZHENG Nae,CHEN Guojun,YU Haitao
doaj   +1 more source