Results 21 to 30 of about 311,579 (323)

Toward Emergency Indoor Localization: Maximum Correntropy Criterion Based Direction Estimation Algorithm for Mobile TOA Rotation Anchor

open access: yesIEEE Access, 2018
To find the relative positional relationship accurately and efficiently without pre-installed infrastructure in emergent scenarios like firefighting, we proposed a rotating-anchor based indoor geolocation system using time of arrival (TOA) technique in ...
Liyuan Xu   +5 more
doaj   +1 more source

High resolution time of arrival estimation for a cooperative sensor system [PDF]

open access: yesAdvances in Radio Science, 2010
Distance resolution of cooperative sensors is limited by the signal bandwidth. For the transmission mainly lower frequency bands are used which are more narrowband than classical radar frequencies. To compensate this resolution problem the combination of
C. Morhart, E. M. Biebl
doaj   +1 more source

A Crowd-Assisted Real-time Public Transport Information Service: No More Endless Wait [PDF]

open access: yes, 2016
Many passengers have expressed frustration in waiting for public bus endlessly without knowing the estimated ar- rival time. In many developing countries, requiring bus operators to invest in the installation of a GPS unit on every bus in order to track ...
Keoh, Sye Loong   +3 more
core   +1 more source

Nonnegative deconvolution for time of arrival estimation

open access: yes2004 IEEE International Conference on Acoustics, Speech, and Signal Processing, 2004
The interaural time difference (ITD) of arrival is a primary cue for acoustic sound source localization. Traditional estimation techniques for ITD based upon cross-correlation are related to maximum-likelihood estimation of a simple generative model.
Yuanqing Lin   +2 more
openaire   +2 more sources

Time difference of arrival estimation of microseismic signals based on alpha-stable distribution [PDF]

open access: yesNonlinear Processes in Geophysics, 2018
Microseismic signals are generally considered to follow the Gauss distribution. A comparison of the dynamic characteristics of sample variance and the symmetry of microseismic signals with the signals which follow α-stable distribution reveals that ...
R.-S. Jia   +11 more
doaj   +1 more source

Locating Partial Discharges in Power Transformers with Convolutional Iterative Filtering

open access: yesSensors, 2023
The most common source of transformer failure is in the insulation, and the most prevalent warning signal for insulation weakness is partial discharge (PD).
Jonathan Wang   +3 more
doaj   +1 more source

Hybrid TOA Trilateration Algorithm Based on Line Intersection and Comparison Approach of Intersection Distances

open access: yesEnergies, 2019
The ever-growing mobile station (MS) localization technologies provide an increasingly important role in all aspects of the wireless cellular systems and Internet of Things (IoT).
Sajina Pradhan   +4 more
doaj   +1 more source

Study on GNSS‐R multi‐target detection and location method based on consistency checking

open access: yesIET Radar, Sonar & Navigation, 2021
The use of GNSS reflected signals to carry out passive detection of space targets is an emerging technical field. Unlike the traditional GNSS‐R in large‐scale environments such as oceans, vegetation, ice and snow, it is required to identify different ...
Cheng Liu   +7 more
doaj   +1 more source

A Distributed Intelligent Buoy System for Tracking Underwater Vehicles

open access: yesJournal of Marine Science and Engineering, 2023
Underwater vehicles play a crucial role in various underwater applications, such as data collection in underwater sensor networks, target detection and tracking, and underwater pipeline monitoring.
Mengzhuo Liu   +6 more
doaj   +1 more source

On Time-of-Arrival Estimation in NB-IoT Systems [PDF]

open access: yes2019 IEEE Wireless Communications and Networking Conference (WCNC), 2019
6 pages, 8 ...
Sha Hu 0001   +2 more
openaire   +2 more sources

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