Results 81 to 90 of about 95,609 (201)

Aerial Localization and Navigation for Surveillance of Large, Featureless, GNSS‐Denied Maritime Environments

Journal of Field Robotics, Volume 42, Issue 8, Page 4215-4235, December 2025.
ABSTRACT In this study, we tackle the problem of surveilling a large area over the sea without access to the global navigation satellite system (GNSS) while searching for the known target vessel. The system utilizes an unmanned aerial vehicle (UAV) equipped with long‐range radio frequency (LoRa) localization and an RGB camera to detect the target ...
Marijana Peti, Lovro Marković, Ivan Lončar, Antonella Barišić Kulaš, Frano Petric, Ana Milas, Jurica Goričanec, Marko Car, Matko Orsag, Barbara A. Ferreira, Stjepan Bogdan   +10 more
wiley   +1 more source

Towards Autonomous Uwb-Based Uav Indoor Navigation

Acta Electrotechnica et Informatica
This paper presents a system for autonomous indoor navigation of the DJI Mini 3 drone by combining an Android-based control application with ultra-wideband (UWB) technology for precise localization.
Krupáš Maroš, Pačuta Kristián, Zolotová Iveta   +2 more
doaj   +1 more source

UWB slot-loaded Antipodal Vivaldi Antenna for through-the-wall radar imaging (TWRI) applications [PDF]

Serbian Journal of Electrical Engineering
The study presents an Ultra-Wideband Slot-loaded Antipodal Vivaldi Antenna (SL-AVA) designed for through-the-wall radar imaging (TWRI) applications. The antenna incorporates rectangular slots of varying lengths and widths, effectively extending ...
Ahmed Sajjad, Joret Ariffuddin, Katiran Norshidah, Abbasi Muhammad Inam, Aminuddin Nuramin Fitri   +4 more
doaj   +1 more source

Monitoring Movements of Ataxia Patient by Using UWB Technology

Sensors, 2020
Internet of multimedia things (IoMT) driving innovative product development in health care applications. IoMT requires delay-sensitive and higher bandwidth devices.
Tanjila Akter Zilani, Fadi Al-Turjman, Muhammad Bilal Khan, Nan Zhao, Xiaodong Yang   +4 more
doaj   +1 more source

Performance of Hybrid Direct-Sequence Time-Hopping Ultrawide Bandwidth Systems over Nakagami-m Fading Channels

, 2007
This paper investigates and compares the performance of various ultrawide bandwidth (UWB) systems when communicating over Nakagami-m fading channels. Specifically, the direct-sequence (DS), time-hopping (TH) and hybrid direct-sequence time-hopping (DS-TH)
Ahmed, Qasim Zeeshan, Yang, Lie-Liang
core  

A Belief Propagation Based Framework for Soft Multiple-Symbol Differential Detection

, 2016
Soft noncoherent detection, which relies on calculating the \textit{a posteriori} probabilities (APPs) of the bits transmitted with no channel estimation, is imperative for achieving excellent detection performance in high-dimensional wireless ...
Gao, Hui, Lv, Tiejun, Wang, Chanfei, Yang, Shaoshi   +3 more
core   +1 more source

High‐Performance Ultra‐Wide‐Bandgap CaSnO3 Metal‐Oxide‐Semiconductor Field‐Effect Transistors

Advanced Electronic Materials, Volume 11, Issue 19, November 18, 2025.
High‐performance enhancement‐mode MOSFET devices made from ultra‐wide bandgap semiconductor CaSnO3 are demonstrated for the first time with an on/off ratio exceeding 108, field‐effect mobility of 8.4 cm2 V−1 s−1, low contact resistance of 0.73 kΩ·µm, and a record breakdown field of ∼8.3 MV cm−1.
Weideng Sun, Junghyun Koo, Donghwan Kim, Hongseung Lee, Rishi Raj, Chengyu Zhu, Kiyoung Lee, Andre Mkhoyan, Hagyoul Bae, Bharat Jalan, Gang Qiu   +10 more
wiley   +1 more source

Peacock Feather Shaped Antenna With Super High Frequency Band for Wireless Applications

Engineering Reports, Volume 7, Issue 11, November 2025.
Proposed Peacock feather‐shaped patch antenna: dimensions, fabricated antenna measurement. ABSTRACT This work presents the design and simulation of a peacock eye‐shaped antenna, developed to address the global bandwidth shortage in wireless cellular networks, particularly in 3G, 4G, and 5G communication systems.
P. Sree Lakshmi, A. Deepak, Suresh Kumar Muthuvel, Ayodeji Olalekan Salau, Aitizaz Ali, Ting Tin Tin   +5 more
wiley   +1 more source

Deep Learning-Based LOS and NLOS Identification in Wireless Body Area Networks

Sensors, 2019
In this article, the usage of deep learning (DL) in ultra-wideband (UWB) Wireless Body Area Networks (WBANs) is presented. The developed approach, using channel impulse response, allows higher efficiency in identifying the direct visibility conditions ...
Krzysztof K. Cwalina, Piotr Rajchowski, Olga Blaszkiewicz, Alicja Olejniczak, Jaroslaw Sadowski   +4 more
doaj   +1 more source

Underground Personnel Positioning Method Based on Self-training and NLOS Suppression

Taiyuan Ligong Daxue xuebao
[Purposes] The research of precise location of underground personnel in coal mine is of great significance to protect their life safety. The ultra-wideband signal is susceptible to non-lineof- sight (NLOS) interference, which will seriously affects the ...
SHAO Xiaoqiang, HAN Zehui, MA Bo, YANG Yongde, YUAN Zewen, LI Xin   +5 more
doaj   +1 more source