Results 31 to 40 of about 168,044,314 (279)

Underwater Transmitter Localization Based on TDOA and FDOA Considering the Unknown Time-Varying Emission Frequency

open access: yesJournal of Marine Science and Engineering, 2023
This article considers locating a noncooperative underwater transmitter utilizing multiple receivers, such that each receiver can measure the frequency difference of arrival (FDOA) as well as the time difference of arrival (TDOA) of the transmitter’s ...
Jonghoek Kim
doaj   +1 more source

Fusion of time of arrival and time difference of arrival for ultra-wideband indoor localization

open access: yes, 2019
This article presents a new approach for the wireless clock synchronization of Decawave ultra-wideband transceivers based on the time difference of arrival. The presented techniques combine the time-of-arrival and time-difference-of-arrival measurements without losing the advantages of each approach. The precision and accuracy of the distances measured
Juri Sidorenko   +4 more
openaire   +3 more sources

predation-arrival-time: First release

open access: yes, 2016
<p>This is the first release of code for the model described in 'Predation can select for later and more synchronous arrival times in migrating species' by Harts, Anna M., Kristensen, Nadiah P., and Kokko, Hanna.</p ...
Nadiah Kristensen
core   +1 more source

A Comprehensive Survey on Short-Distance Localization of UAVs

open access: yesDrones
The localization of Unmanned Aerial Vehicles (UAVs) is a critical area of research, particularly in applications requiring high accuracy and reliability in Global Positioning System (GPS)-denied environments.
Luka Kramarić   +3 more
doaj   +1 more source

Underwater source localization using time difference of arrival and frequency difference of arrival measurements based on an improved invasive weed optimization algorithm

open access: yesIET Signal Processing, 2022
In this study, we propose an underwater localization method based on an improved invasive weed optimization algorithm to accurately locate moving sources in underwater sensor networks.
Yunhang Lin   +2 more
doaj   +1 more source

Improved Methods for UHF Localization of Partial Discharge in Air-Insulated Substations

open access: yesEnergies, 2023
A time-difference-of-arrival-based partial discharge (PD) location system that utilises prior knowledge of substation layout is presented. We propose a new time delay estimator that employs onset detection techniques and demonstrate, through experimental
Ahmed Rashwan, Alistair Reid
doaj   +1 more source

An Iterative Method for Moving Target Localization Using TDOA and FDOA Measurements

open access: yesIEEE Access, 2018
For moving targets localization, incorporating frequency-difference-of-arrival (FDOA) measurements in the commonly used time-difference-of-arrival (TDOA) positioning systems will improve performance.
Yanbin Zou, Huaping Liu, Qun Wan
doaj   +1 more source

Review of Localization and Clustering in USV and AUV for Underwater Wireless Sensor Networks

open access: yesTelecom, 2023
Oceanographic data collection, disaster prevention, aided navigation, critical observation sub-missions, contaminant screening, and seaward scanning are just a few of the submissions that use underwater sensor hubs.
Kaveripakam Sathish   +3 more
doaj   +1 more source

Non-Line-of-Sight Ultraviolet Positioning via Time Difference of Arrival

open access: yesIEEE Open Journal of the Communications Society
For challenging environments where conventional line-of-sight (LOS) systems are not available, we propose a novel non-line-of-sight (NLOS) ultraviolet (UV) positioning system based on time difference of arrival (TDOA).
Shihui Yu   +6 more
doaj   +1 more source

Automatic Speaker Positioning in Meetings Based on YOLO and TDOA

open access: yesSensors, 2023
In recent years, many things have been held via video conferences due to the impact of the COVID-19 epidemic around the world. A webcam will be used in conjunction with a computer and the Internet.
Chen-Chiung Hsieh   +2 more
doaj   +1 more source

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