Indoor localization using time difference of arrival with UWB signals and unsynchronized devices
Sign Up to like & getrecommendations! Published in 2020 at "Ad Hoc Networks"
DOI: 10.1016/j.adhoc.2019.102067
Abstract: Abstract Indoor location using radio frequency (RF) signals has been traditionally focused mainly on RSSI and fingerprint techniques, because methods based on time of arrival (ToA) or time difference of arrival (TDoA) were not suitable… read more here.
Keywords: indoor localization; time difference; time; localization ... See more keywords
Transit time difference and equal or non-equal transit time theory for airfoils with lift
Sign Up to like & getrecommendations! Published in 2021 at "Chinese Journal of Aeronautics"
DOI: 10.1016/j.cja.2021.03.034
Abstract: Abstract The transit time difference of fluid particles moving along the upper and lower surfaces of a lift-producing airfoil is studied here both theoretically and numerically. We show that, under thin airfoil assumption and for… read more here.
Keywords: difference equal; time; time difference; transit time ... See more keywords
Evaluation method of transit time difference for clamp-on ultrasonic flowmeters in two-phase flows
Sign Up to like & getrecommendations! Published in 2020 at "Experimental Thermal and Fluid Science"
DOI: 10.1016/j.expthermflusci.2019.109957
Abstract: Abstract To achieve efficient energy management in industrial plants, it is crucial to measure the steam flow rates at the various points of consumption. Clamp-on time-of-flight ultrasonic flowmeters are useful devices to measure the steam… read more here.
Keywords: difference; time difference; time; transit time ... See more keywords
Method for accurately measuring of acoustic time difference based on optimal threshold
Sign Up to like & getrecommendations! Published in 2021 at "Measurement"
DOI: 10.1016/j.measurement.2020.108769
Abstract: Abstract The measurement accuracy of acoustic time difference directly affects the reliability of ultrasonic stress test results. The threshold method was proposed to be used for measuring acoustic time difference. The new method compares the… read more here.
Keywords: time difference; time; method; acoustic time ... See more keywords
An investigation on bolt stress ultrasonic measurement based on acoustic time difference algorithm with adaptive hybrid extended Kalman filter
Sign Up to like & getrecommendations! Published in 2021 at "Measurement"
DOI: 10.1016/j.measurement.2021.110223
Abstract: Abstract Ultrasonic measurement is an effective technical method for the bolt stress detection of the precise structural connection. This paper proposed an acoustic time difference algorithm based on adaptive hybrid extended Kalman filter to reduce… read more here.
Keywords: time difference; bolt; acoustic time; measurement ... See more keywords
Soft sensor modelling by time difference, recursive partial least squares and adaptive model updating
Sign Up to like & getrecommendations! Published in 2017 at "Measurement Science and Technology"
DOI: 10.1088/1361-6501/aa57e2
Abstract: To investigate time-variant and nonlinear characteristics in industrial processes, a soft sensor modelling method based on time difference, moving-window recursive partial least square (PLS) and adaptive model updating is proposed. In this method, time difference… read more here.
Keywords: soft sensor; time difference; time; model ... See more keywords
Application of Time Difference of Arrival Methods in the Localization of Partial Discharge Sources Detected Using Bio-Inspired UHF Sensors
Sign Up to like & getrecommendations! Published in 2021 at "IEEE Sensors Journal"
DOI: 10.1109/jsen.2020.3019760
Abstract: This paper discusses the application of the first peak and cumulative energy methods to calculate the time difference of arrival (TDOA) of UHF signals emitted by a partial discharge source in order to locate it.… read more here.
Keywords: application; time difference; partial discharge; bio inspired ... See more keywords
Finding the Right Place: Sensor Placement for UWB Time Difference of Arrival Localization in Cluttered Indoor Environments
Sign Up to like & getrecommendations! Published in 2022 at "IEEE Robotics and Automation Letters"
DOI: 10.1109/lra.2022.3165181
Abstract: Ultra-wideband (UWB) time difference of arrival (TDOA)-based localization has recently emerged as a promising indoor positioning solution. However, in cluttered environments, both the UWB radio positions and the obstacle-induced non-line-of-sight (NLOS) measurement biases significantly impact… read more here.
Keywords: uwb time; localization; difference arrival; time difference ... See more keywords
Impact Localization in Anisotropic Composites With Time Difference Matrix Matching and Edge Accuracy Optimization
Sign Up to like & getrecommendations! Published in 2023 at "IEEE Transactions on Instrumentation and Measurement"
DOI: 10.1109/tim.2023.3269113
Abstract: Composites play an important role in the development of modern science and technology, but the special anisotropy leads to difficulties in impact localization. To achieve impact localization on composite materials, this article proposes a time… read more here.
Keywords: impact localization; localization; impact; edge accuracy ... See more keywords
US Contrast Agent Arrival Time Difference Ratio for Benign versus Malignant Subpleural Pulmonary Lesions.
Sign Up to like & getrecommendations! Published in 2021 at "Radiology"
DOI: 10.1148/radiol.2021204642
Abstract: Background US has proven valuable in the diagnosis of subpleural pulmonary lesions (SPLs); however, existing US indicators have limitations. Purpose To propose and validate a revised contrast-enhanced (CE) US indicator for differential diagnosis of benign… read more here.
Keywords: difference; time difference; arrival time; difference ratio ... See more keywords
Envelope contributions to the representation of interaural time difference in the forebrain of barn owls.
Sign Up to like & getrecommendations! Published in 2017 at "Journal of neurophysiology"
DOI: 10.1152/jn.01166.2015
Abstract: Birds and mammals use the interaural time difference (ITD) for azimuthal sound localization. While barn owls can use the ITD of the stimulus carrier frequency over nearly their entire hearing range, mammals have to utilize… read more here.
Keywords: time difference; envelope; barn owls; time ... See more keywords