Results 11 to 20 of about 1,650,715 (355)

Indoor THz SAR Trajectory Deviations Effects and Compensation With Passive Sub-mm Localization System

open access: yesIEEE Access, 2020
In radar remote sensing, the Terahertz (THz) spectrum is presently being investigated worldwide with focus on short-range indoor and outdoor applications.
Aman Batra   +4 more
doaj   +1 more source

Adaptive coverage control for multi-USV system in complex environment with unknown obstacles

open access: yesInternational Journal of Distributed Sensor Networks, 2021
Aiming at the shortcomings of the existing control law based on the global information, this article studies the coverage problem of a given region in the plane using a team of USVs.
Yao Yao   +6 more
doaj   +1 more source

An Information-Theoretic Approach to the Chipless RFID Tag Identification

open access: yesIEEE Access, 2019
In this paper, we focus on the chipless radio-frequency identification (RFID), where the tag information bits are encoded by the peak/notch pattern appeared in the frequency spectrum of the radar cross section (RCS) of the tag. In particular, we restrict
Yanling Chen   +3 more
doaj   +1 more source

Fast and precise underwater transducer characterisation utilising adaptive system identification

open access: yesIET Radar, Sonar & Navigation, 2023
Characterising underwater acoustic transducers is essential to optimal signal processing in sound navigation and ranging systems. Precise characterisation allows for equalisation of the input and output hardware, resulting in improved performance of the ...
Bastian Kaulen, Gerhard Schmidt
doaj   +1 more source

Frequency-Coded Chipless RFID Tags: Notch Model, Detection, Angular Orientation, and Coverage Measurements

open access: yesSensors, 2020
This paper focuses on the frequency coded chipless Radio Frequency Identification (RFID) wherein the tag’s information bits are physically encoded by the resonators’ notch position which has an effect on the frequency spectrum of the ...
Jahangir Alam   +4 more
doaj   +1 more source

Large-signal dynamics of an ultrafast semiconductor laser at digital modulation rates approaching 10 Gbit/s [PDF]

open access: yes, 1985
High-fidelity pseudorandom digital modulation at 8.2 Gbit/s of an ultrahigh speed semiconductor laser is demonstrated. Studies using simple but representative pulse patterns at 10 Gbit/s give insights into the maximum digital modulation rate attainable ...
Lau, K. Y., Yariv, A.
core   +1 more source

A Recognition Method for Multi-Radial-Distance Event of Φ-OTDR System Based on CNN

open access: yesIEEE Access, 2021
This paper proposes a multi-radial-distance event classification method based on deep learning. To the best of our knowledge, this is the first time that the $\Phi $ -OTDR can tell how far the target event from the sensing fiber is through deep learning
Yi Shi   +3 more
doaj   +1 more source

High-Accuracy Indoor Localization Based on Chipless RFID Systems at THz Band

open access: yesIEEE Access, 2018
Highly accurate indoor localization based on significantly low complex infrastructure has recently gained great interest for a variety of innovative location-based applications.
Mohammed El-Absi   +5 more
doaj   +1 more source

Path Loss Modeling of RFID Backscatter Channels With Reconfigurable Intelligent Surface: Experimental Validation

open access: yesIEEE Access, 2023
In the realm of radio frequency identification (RFID) technology, the integration of reconfigurable intelligent surfaces (RISs) has opened up new possibilities for real-time remote data capturing and seamless connectivity.
Mohammed El-Absi   +8 more
doaj   +1 more source

Full-Duplex Femto Base-Station With Antenna Selection: Experimental Validation

open access: yesIEEE Access, 2019
Full-Duplex (FD) is an emerging technology that allows the communication device to use the same frequency to simultaneously transmit and receive. The cancellation of the high power Self-Interference (SI) is the main challenge in FD systems.
Nidal Zarifeh   +3 more
doaj   +1 more source

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