Results 21 to 30 of about 4,770 (178)

Acoustic Indoor Localization Augmentation by Self-Calibration and Machine Learning

open access: yesSensors, 2020
An acoustic transmitter can be located by having multiple static microphones. These microphones are synchronized and measure the time differences of arrival (TDoA). Usually, the positions of the microphones are assumed to be known in advance. However, in
Joan Bordoy   +9 more
doaj   +1 more source

Application Research of LM Algorithm in TDOA-based Three-dimensional Positioning [PDF]

open access: yesJisuanji gongcheng, 2020
The Taylor algorithm for TDOA-based three-dimensional positioning is affected by external conditions,which leads to a large-scale solution failure.To address the problem,a simulation software for the TDOA-based three-dimensional positioning algorithm is ...
WEI Zihui, ZHANG Yaofa, ZHAO Jixun, XIE Yunlong, LI Xiaoting, FANG Lide
doaj   +1 more source

EM-Based TDOA Estimation of a Speech Source via Gaussian Mixture Models in Noisy and Anechoic Environments

open access: yesIEEE Access, 2021
The propagation delay difference of a speech signal transmitted from the source to microphones, also known as time difference of arrival (TDOA), embodies the information of speech source position. The TDOA estimation plays a vital role in diverse systems
Zhihua Lu, Joao P. J. Da Costa, Tai Fei
doaj   +1 more source

Localization in Wireless Sensor Networks: A Review

open access: yesCybernetics and Information Technologies, 2020
Wireless Sensor Network (WSN) has been a source of attraction for many researchers as well as common people for the past few years. The use of WSN in various environmental applications like monitoring of weather, temperature, humidity, military ...
Sneha V., Nagarajan M.
doaj   +1 more source

Research on positioning algorithm of electric mine shovel based on UWB technology

open access: yesGong-kuang zidonghua, 2020
In the harsh working environment of mines, the traditional cable reeling method cannot guarantee the power supply of electric shovel for a long time, and there are hidden safety hazards in the process of power supply.
GUO Anbin, SU Hongjun, YAN Xiaoheng
doaj   +1 more source

Methodology of determining of the transfer function of engagement kinematics of accelerations of an aircraft and its elliptic coordinates used for thr guidance based on time difference of arrival

open access: yesСистемный анализ и прикладная информатика, 2021
This paper discusses the problem of determining a kinematics (in terms of transfer function, as far as possible) of parameters of the motion of an aircraft expressed in the curvilinear coordinate system and control accelerations expressed in a ...
V. V. Legkostup, V. E. Markevich
doaj   +1 more source

A two‐stage iterative method for short‐wave source localisation

open access: yesIET Radar, Sonar & Navigation, 2023
Short‐wave source localisation has an important role in many fields. A two‐stage iterative algorithm is proposed based on the ionospheric virtual height (IVH) model using the direction of arrival (DOA) and time difference of arrival (TDOA) measurements ...
Linqiang Jiang   +4 more
doaj   +1 more source

Analysis of reliable deployment of TDOA local positioning architectures [PDF]

open access: yes, 2022
[EN] Local Positioning Systems (LPS) are supposing an attractive research topic over the last few years. LPS are ad-hoc deployments of wireless sensor networks for particularly adapt to the environment characteristics in harsh environments.
Pérez García, Hilde   +4 more
core   +1 more source

A Joint Positioning Algorithm of TOF and TDOA Based on Weighted Centroid [PDF]

open access: yesZhengzhou Daxue xuebao. Gongxue ban, 2023
Aiming at the problem of low accuracy and positioning divergence in the UWB TDOA positioning mode with the positioning scenarios such as severe noise environments or tags near the base stations, a new TOF and TDOA joint positioning method was constructed
ZHU Chunhua, YANG Jinmin
doaj   +1 more source

A New Method of D-TDOA Time Measurement Based on RTT

open access: yesMATEC Web of Conferences, 2018
In this paper, a novel difference-time difference of arrival (D-TDOA) time measurement method based on round-trip transmission (RTT) is proposed. The accuracy of time measurement is critical for high accuracy positioning, yet the traditional time ...
Zhou Junjie, Shen LiangJie, Sun Zhenlong
doaj   +1 more source

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