Results 41 to 50 of about 2,582,612 (303)

Passive UHF-RFID Technology: Integrated Communication, Localization and Sensing

open access: yesIEEE Journal of Radio Frequency Identification, 2023
This paper presents an environmental mapping system based on passive Internet of Things (IoT) nodes implemented through Ultra High-Frequency (UHF) Radio Frequency IDentification (RFID) devices with sensing capabilities.
A. Motroni   +3 more
semanticscholar   +1 more source

TOA-Based Passive Localization Constructed Over Factor Graphs: A Unified Framework

open access: yesIEEE Transactions on Communications, 2019
Passive localization based on time of arrival (TOA) measurements is investigated, where the transmitted signal is reflected by a passive target and then received at several distributed receivers.
W. Yuan   +5 more
semanticscholar   +1 more source

Neighborhood Selection Synchronization Mechanism-Based Moving Source Localization Using UAV Swarm

open access: yesRemote Sensing, 2023
To obtain the accurate time difference of arrival (TDOA) and frequency difference of arrival (FDOA) for passive localization in an unmanned aerial vehicle (UAV) swarm, UAV swarm network synchronization is necessary.
Yongkun Zhou   +4 more
doaj   +1 more source

High Resolution Direct Detection and Position Determination of Sources With Intermittent Emission

open access: yesIEEE Access, 2019
This paper presents our research findings on the direct detection and position determination (DDPD) problem, which is to estimate the positions and the total number of multiple sources with intermittent emission, using the received signals intercepted by
Kegang Hao, Qun Wan
doaj   +1 more source

Expectation–Maximization-Based Passive Localization Relying on Asynchronous Receivers: Centralized Versus Distributed Implementations

open access: yesIEEE Transactions on Communications, 2019
This paper considers a passive localization scenario relying on a single transmitter, several receivers, and multiple moving targets to be located. The so-called “passive” targets equipped with RFID reflectors are capable of reflecting the signals from ...
W. Yuan   +5 more
semanticscholar   +1 more source

Passive Localization Utilizing Wireless RSSI: A Review

open access: yesCybernetics and Information Technologies
Localization is the process of determining the location of an object or device in an environment, and it can be achieved using radio frequency signals in wireless communication systems.
Jabbar Muhammad   +4 more
doaj   +1 more source

MFFALoc: CSI-Based Multifeatures Fusion Adaptive Device-Free Passive Indoor Fingerprinting Localization

open access: yesIEEE Internet of Things Journal
In recent years, the rise of location-based service applications, such as cashier-less shopping, mobile advertisement targeting, and geo-based augmented reality (AR), has been remarkable. These applications offer convenient and interactive experiences by
Xinping Rao   +5 more
semanticscholar   +1 more source

Organizing the interface—Plasma membrane architecture and receptor dynamics in virus‐cell interactions

open access: yesFEBS Letters, EarlyView.
Plasma membranes contain dynamic nanoscale domains that organize lipids and receptors. Because viruses operate at similar scales, this architecture shapes early infection steps, including attachment, receptor engagement, and entry. Using influenza A virus and HIV‐1 as examples, we highlight how receptor nanoclusters, multivalent glycan interactions ...
Jan Schlegel, Christian Sieben
wiley   +1 more source

Closed-Form Method for Unified Far-Field and Near-Field Localization Based on TDOA and FDOA Measurements

open access: yesRemote Sensing
When the near-field and far-field information of a target is uncertain, it is necessary to choose a suitable localization method. The modified polar representation (MPR) method integrates the two scenarios and achieves a unified localization with ...
Weishuang Gong   +4 more
doaj   +1 more source

Residual tail twisting in ascidian larvae is stabilized by asymmetric myofibrils that resist bilateral symmetry restoration

open access: yesFEBS Letters, EarlyView.
Ascidian Ciona larvae initially show strong clockwise tail twisting, which is largely corrected during development. However, a small residual twist remains. This study shows that organized helical myofibrils in tail muscles mechanically stabilize this residual asymmetry, preventing complete restoration of bilateral symmetry and revealing how embryos ...
Yuki S. Kogure   +3 more
wiley   +1 more source

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