Results 71 to 80 of about 95,355 (231)

Determining bismuth content in GaAsBi alloys by energy‐dispersive X‐ray spectroscopy: A case study with multiple sets of k*‐factors for analytical transmission electron microscopy

open access: yesJournal of Microscopy, EarlyView.
Abstract Measuring the bismuth (Bi) content of ternary gallium arsenide bismuthide (GaAsBi) alloys is important because it sensitively influences their bandgap, and Bi is known to segregate vertically to the surface and sometimes also laterally during growth, so elemental distribution maps need to be quantified.
T. Walther
wiley   +1 more source

A Review of Linear Multilateration Techniques and Applications

open access: yesIEEE Access
In multilateration, distances between an unknown location and several known points are used to determine the location of the unknown point. Papers on algorithms for multilateration, such as time of arrival (TOA), time difference of arrival (TDOA), and ...
Eric Widdison, David G. Long
doaj   +1 more source

A Closed-Form Localization Algorithm and GDOP Analysis for Multiple TDOAs and Single TOA Based Hybrid Positioning

open access: yesApplied Sciences, 2019
Cellular communication systems support mobile phones positioning function for Enhanced-911 (E-911) location requirements, but the positioning accuracy is poor. The fifth-generation (5G) cellular communication system can use indoor distribution systems to
Zhongliang Deng   +6 more
doaj   +1 more source

Proteus II: design and evaluation of an integrated power-efficient underwater sensor node [PDF]

open access: yes, 2015
We describe the design and evaluation of an integrated low-cost underwater sensor node designed for reconfigurability, allowing continuous operation on a relatively small rechargeable battery for one month.
Havinga, Paul J.M.   +3 more
core   +6 more sources

Time of Arrival Extraction for Impact Localisation on Composite Structures

open access: yese-Journal of Nondestructive Testing
Time of arrival (TOA) serves as a widely utilised metric for pinpointing impact locations on composite aircraft structures. Nevertheless, the effectiveness and reliability of existing TOA extraction methods across diverse impact scenarios remains ...
Dong Xiao   +2 more
semanticscholar   +1 more source

Multi-Sensor Passive Localization Using Second Difference of Coherent Time Delays With Incomplete Measurements

open access: yesIEEE Access, 2019
The passive localization using multiple sensors is considered for emitter transmitting pulse signals with unknown start transmission time and period.
Shangyu Zhang   +4 more
doaj   +1 more source

Beamforming Design for Joint Localization and Data Transmission in Distributed Antenna System

open access: yes, 2014
A distributed antenna system is studied whose goal is to provide data communication and positioning functionalities to Mobile Stations (MSs). Each MS receives data from a number of Base Stations (BSs), and uses the received signal not only to extract the
Haimovich, Alexander   +3 more
core   +1 more source

A Centralized Processing Framework for Foliage Penetration Human Tracking in Multistatic Radar [PDF]

open access: yes, 2016
A complete centralized processing framework is proposed for human tracking using multistatic radar in the foliage-penetration environment. The configuration of the multistatic radar system is described.
He, Y., Jin, T., Zhang, J., Zhou, Z. M.
core   +2 more sources

Evolutionary Systematics of Two Co‐Occurring Paludomid Freshwater Gastropods in Thailand (Cerithioidea: Paludomidae)

open access: yesZoologica Scripta, Volume 55, Issue 2, Page 244-272, March 2026.
ABSTRACT Paludomidae is a diverse family of limnic gastropods in the Cerithioidea, with a distribution range including most of tropical sub‐Saharan Africa, the Nile Valley, Madagascar, the Seychelles, as well as South and Southeast Asia. Its systematics and taxonomy are currently in a state of confusion, with Thailand being inhabited by probably two ...
Matthias Glaubrecht   +6 more
wiley   +1 more source

BASAT: BLE AOA-Based Spatio-Temporal Acoustic TOA Estimator

open access: yesIEEE Access
In severely reverberant indoor environments, acoustic Time-of-Arrival (TOA) localization on commercial smartphones is prone to multipath-induced bias and unreliable ranging.
Can Xue, Huixin Zhuge, Zhi Wang
doaj   +1 more source

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