Results 71 to 80 of about 23,679 (186)

Ultra-Wideband Aided Fast Localization and Mapping System

open access: yes, 2017
This paper proposes an ultra-wideband (UWB) aided localization and mapping system that leverages on inertial sensor and depth camera. Inspired by the fact that visual odometry (VO) system, regardless of its accuracy in the short term, still faces ...
Nguyen, Thien-Minh   +3 more
core   +1 more source

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

open access: yesJournal 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   +10 more
wiley   +1 more source

Impulse Radio Systems with Multiple Types of Ultra-Wideband Pulses [PDF]

open access: yes, 2005
Spectral properties and performance of multi-pulse impulse radio ultra-wideband systems with pulse-based polarity randomization are analyzed. Instead of a single type of pulse transmitted in each frame, multiple types of pulses are considered, which is ...
Gezici, Sinan   +3 more
core  

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

open access: yesEngineering 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   +5 more
wiley   +1 more source

Planar UWB Antenna with Notched Bands

open access: yesИзвестия высших учебных заведений России: Радиоэлектроника, 2016
The ultra-wideband (UWB) monopole antennas are designed to provide the impedance band-width of the wideband response from 2.5 to 12 GHz. To achieve single-, dual-, or triple-band notched characteristics at desirable frequencies, the electric ring ...
A. S. Rusakov
doaj  

Dynamic Slope Measurement and Positioning Accuracy Optimization Using Improved Particle Filter in Complex Environments

open access: yesEngineering Reports, Volume 7, Issue 9, September 2025.
By applying a historical observation weighted modeling mechanism, the particle importance weight distribution is reconstructed, enhancing the state estimation's responsiveness to nonlinear dynamic perturbations. During the state prediction phase, a Terrain‐Assisted Inertial Navigation (TAIN) correction model is introduced to guide particle distribution
Wenjun Gao, Hongxu Chai, Yanhong Ma
wiley   +1 more source

A Review of Technical Advances and Applications of Intelligent Inspection Robots in Structural Health Monitoring

open access: yesSmartBot, Volume 1, Issue 3, September 2025.
This review presents recent advances in intelligent inspection robots for structural health monitoring. It highlights key technologies in sensing, data processing, and fault localization, along with challenges and future directions. The aim is to support practical deployment and promote intelligent, efficient, and autonomous monitoring systems ...
Dongjie Li   +6 more
wiley   +1 more source

Microwave Sensing and Imaging Technology in Food Applications: A Comprehensive Review

open access: yesComprehensive Reviews in Food Science and Food Safety, Volume 24, Issue 4, July 2025.
ABSTRACT Microwave sensing (MWS) and imaging (MWI) technologies have gained significant attention as non‐destructive methods for assessing food quality, ensuring safety, and verifying authenticity. This review provides a comprehensive evaluation of MW‐based systems in food applications, integrating both theoretical foundations and practical ...
Aysenur Betul Bilgin, Pervin Basaran
wiley   +1 more source

A Coplanar Waveguide Fed Hexagonal Shape Ultra Wide Band Antenna with WiMAX and WLAN Band Rejection [PDF]

open access: yes, 2014
In this paper, a coplanar waveguide (CPW) fed hexagonal shape planar antenna has been considered for ultra-wide band (UWB). This antenna is then modified to obtain dual band rejection. The Wireless Local Area Network (WLAN) and Wireless Microwave Access (
Das, S., Mandal, T.
core   +1 more source

High data rate transmissions in UWB system using orthogonal pulses

open access: yesTongxin xuebao, 2005
Two orthogonal pulses based on wavelet were presented,their spectrum meet FCC spectral mask for ultra wideband (UWB) system.A novel method for high data rate transmissions in UWB system was proposed.It employs a combination of pulse polarity and ...
LIANG Zhao-hui1   +2 more
doaj   +2 more sources

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