Results 11 to 20 of about 4,681,081 (294)
IEEE Access, 2018 Cooperative spectrum sensing (CSS) is widely investigated in cognitive radio networks (CRNs) to improve the spectrum sensing performance. To realize CSS, how to collect sensing data from the secondary users (SUs) is one of the major problems.
Zong-Heng Wei +3 more
doaj +1 more source
Long-Range Dependence Involutional Network for Logo Detection
Entropy, 2023 Logo detection is one of the crucial branches in computer vision due to various real-world applications, such as automatic logo detection and recognition, intelligent transportation, and trademark infringement detection.
Xingzhuo Li +5 more
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A High Accuracy Time-Reversal Based WiFi Indoor Localization Approach with a Single Antenna
Sensors, 2018 In this paper, we study the influence of multipath magnitude, bandwidth, and communication link number on the performance of the existing time-reversal (TR) based fingerprinting localization approach and find that the localization accuracy deteriorates ...
Lili Zheng, Binjie Hu, Haoxiang Chen
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IEEE Access, 2018 Designing an efficient spectrum assignment (SA) mechanism is a key issue for realizing dynamic spectrum access in cognitive radio network. In multi-channel selection based SA schemes, secondary users (SUs) are able to utilize multiple channels ...
Zong-Heng Wei, Bin-Jie Hu
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High Speed Dim Air Target Detection Using Airborne Radar under Clutter and Jamming Effects [PDF]
, 2015 The challenging potential problems associated with using airborne radar in detection of high Speed Maneuvering Dim Target (HSMDT) are the highly noise, jamming and clutter effects.
Almslmany, A. E. +2 more
core +2 more sources
Ultrafast exciton dephasing in PbS colloidal quantum dots [PDF]
, 2011 In this work, we have measured the ground state excitonic dephasing in PbS QDs of sizes from 3.7nm to 5.7nm diameter in the temperature range from 5K to 100K by transient degenerate four-wave mixing (FWM) using 100fs pulses.
Borri, Paola +4 more
core +1 more source
Optimal Detection Range of RFID Tag for RFID-based Positioning System Using the k-NN Algorithm
Sensors, 2009 Positioning technology to track a moving object is an important and essential component of ubiquitous computing environments and applications. An RFID-based positioning system using the k-nearest neighbor (k-NN) algorithm can determine the position of a ...
Joon Heo +4 more
doaj +1 more source
Revisiting Enhanced AIS Detection Range under Anomalous Propagation Conditions
Journal of Marine Science and Engineering, 2023 Two clear-air over-the-horizon propagation mechanisms affecting the Automatic Identification System (AIS) detection range are considered. Comparison results are presented between the path loss due to tropospheric ducting and path loss due to tropospheric
Irina Sirkova
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Evaluating the detection range of microwave quantum illumination radar
IET Radar, Sonar & Navigation, 2023 Based on quantum illumination (QI) protocol, microwave quantum radar has been developed, which has attracted great interest from radar researchers.
Rongyu Wei +5 more
doaj +1 more source
Towards Fingerprint Spoofing Detection in the Terahertz Range
Sensors, 2020 Spoofing attacks using imitations of fingerprints of legal users constitute a serious threat. In this study, a terahertz time domain spectroscopy (TDS) setup in a reflection configuration was used for the non-intrusive detection of fingerprint spoofing ...
Norbert Pałka, Marcin Kowalski
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