Results 61 to 70 of about 91,037 (199)

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

IEEE 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

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

IEEE Access, 2019
The passive localization using multiple sensors is considered for emitter transmitting pulse signals with unknown start transmission time and period.
Shangyu Zhang, Zhen Huang, Xuefeng Feng, Jiazhi He, Lei Shi   +4 more
doaj   +1 more source

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

, 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., Kleunen, Wouter A.P. van, Meratnia, Nirvana, Moseley, Niels A.   +3 more
core   +6 more sources

Signaling Vision: Knowing When to Quit

International Economic Review, EarlyView.
ABSTRACT We study a signaling game where agents signal their type by choosing when to quit pursuing an uncertain project. High types observe news about project quality and quit when bad news arrives. Low types who do not observe any news may mimic high types by quitting continuously over a phase of time.
Junichiro Ishida, Wing Suen
wiley   +1 more source

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

Applied 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, Hanhua Wang, Xinyu Zheng, Xiao Fu, Lu Yin, Shihao Tang, Fuxing Yang   +6 more
doaj   +1 more source

Distribution and ecology of the four Macrourus species by‐caught in the longline fishery at South Georgia, Southern Ocean

Journal of Fish Biology, EarlyView.
Abstract Although Macrourus species are the main by‐catch across Southern Ocean longline fisheries, including around South Georgia, the lack of species‐specific data has hindered effective management and ecological understanding. Aggregation of macrourids at genus level masks critical interspecific differences in life‐history strategies and ...
José Abreu, Philip R. Hollyman, Jennifer J. Freer, M. L. Romero Martínez, José P. Queirós, Timothy Jones, Richard A. Phillips, José C. Xavier, Martin A. Collins   +8 more
wiley   +1 more source

Comparison of different X‐ray‐based scanning electron microscopy methods to detect sub‐nanometre ultra‐thin InAs layers deposited on top of GaAs

Journal of Microscopy, EarlyView.
Abstract We compare three different methods of X‐ray analysis in a scanning electron microscope (SEM): energy‐dispersive X‐ray spectroscopy (EDX), wavelength‐dispersive X‐ray spectroscopy (WDX) and micro X‐ray fluorescence (μXRF). These methods are all applied to the same gallium arsenide (GaAs) wafer with a 0.8 nm layer of indium arsenide (InAs) on ...
Thomas Walther, Stuart Creasey‐Gray, Stephan Boehm, Heath Young, Yang Yang   +4 more
wiley   +1 more source

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

Journal 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

Design of Orthogonal Phase of Arrival Positioning Scheme Based on 5G PRS and Optimization of TOA Performance

IEEE Access
This study analyzes the performance of positioning techniques based on configuration changes of 5G New Radio (NR) signals. In 5G networks, a terminal’s position is determined from the Time of Arrival (TOA) of Positioning Reference Signals (PRS ...
Hyejin Shin, Sohee Kim, Ilmu Byun, Juyeop Kim   +3 more
doaj   +1 more source

Engineering Of Acoustic Technology For Underwater Positioning Object [PDF]

, 2018
Underwater Positioning System (UPS) is a system to track the existence of the position of an object by utilizing the arrival time of the signal measurement. On land, the system uses an electromagnetic signal called GPS.
Jaya, I. (Indra), Kusumah, B. R. (Billi), Susilohadi, S. (Susilohadi)   +2 more
core