Results 51 to 60 of about 166,346,949 (214)
BASAT: BLE AOA-Based Spatio-Temporal Acoustic TOA Estimator
IEEE AccessIn 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
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Advances in Electrical and Computer Engineering, 2010 This paper introduces the technology Time of Arrival (TOA) based on chirp pulses (according to IEEE 802.15.4a) as a means to perform localization in Wireless Sensor Networks (WSN's) active at 2.4 GHz.
NAUWELAERS, B. +4 more
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A novel time of arrival estimation algorithm using an energy detector receiver in MMW systems
EURASIP Journal on Advances in Signal Processing, 2017 This paper presents a new time of arrival (TOA) estimation technique using an improved energy detection (ED) receiver based on the empirical mode decomposition (EMD) in an impulse radio (IR) 60 GHz millimeter wave (MMW) system.
Xiaolin Liang +4 more
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A Mechanism for Analyzing the Energy Consumption and Environmental Impact of LoRa Sensors Over Time
International Journal of Communication Systems, Volume 39, Issue 15, October 2026.An SPN‐based mechanism, validated against NS‐3 with MAPE below 0.3%, reveals how packet generation rate and spreading factor shape LoRa sensor lifetime, energy consumption, and operational CO2$$ {}_2 $$ emissions, supporting sustainable planning of large‐scale IoT deployments. ABSTRACT Long Range (LoRa) sensors are widely adopted in Internet of Things (
Vandirleya Barbosa +5 more
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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 +6 more
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When two diseases collide: Endometriosis as a risk factor for severe pelvic inflammatory disease
Acta Obstetricia et Gynecologica Scandinavica, Volume 105, Issue 10, Page 2060-2067, October 2026.Endometriosis is associated with a more severe clinical course of pelvic inflammatory disease in hospitalized patients, including higher rates of antibiotic treatment failure, longer hospital stay, and increased need for surgical intervention. Abstract Introduction Our objective was to compare the severity of pelvic inflammatory disease (PID) in ...
Marta Camacho +7 more
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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 +4 more
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Journal of Geophysical Research: Atmospheres, Volume 131, Issue 18, 28 September 2026.Abstract Wildfires are increasing in frequency and intensity, strongly influencing both regional air quality and the Earth's radiation budget via their aerosol emissions. Relying on an unparalleled observational data set from the 2019 NOAA/NASA FIREX‐AQ campaign, this study quantifies the direct radiative effects of two wildfires using the HRRR‐Chem ...
Minsu Choi +17 more
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New Constraint on Future Ocean Heat Uptake Revealed by Considering Model Spread of Radiative Forcing
Geophysical Research Letters, Volume 53, Issue 18, 28 September 2026.Abstract Radiative forcing (F) $(F)$ is the fundamental driver of ocean heat uptake (N) $(N)$; however, its contribution to intermodel spread in N $N$ has not been quantified. We address this gap by leveraging a new set of CMIP6 experiments that diagnoses time‐varying F $F$ for the first time in 11 models.
Quran Wu, Jonathan Gregory
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Location Algorithms and Errors in Time-of-Arrival Systems [PDF]
, 2001 This report describes least squares solution methods and linearized estimates of solution errors caused by data errors. These methods are applied to event locating systems which use time-of-arrival (TOA) data.
Aaronson, Eugene A.
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