Results 71 to 80 of about 44,019 (240)
IEEE Open Journal of Vehicular TechnologyThis study presents wideband propagation measurements of 105 GHz multipath characteristics, encompassing a full 360$^\circ $ in a real office desktop environment.
Masaki Maeda +3 more
doaj +1 more source
Interaction Multipath in Through-the-Wall Radar Imaging Based on Compressive Sensing
Sensors, 2018 Clutters caused by multipath have been widely researched in through-the-wall radar imaging (TWRI). The existing research work of multipath only consider reflections from the wall, while in the condition of a small scene, with the increasing number of ...
Yigeng Ma, Hong Hong, Xiaohua Zhu
doaj +1 more source
MSFFNet: Multiscale Feature Fusion Network for Small Target Detection in Remote Sensing Images
CAAI Transactions on Intelligence Technology, EarlyView.ABSTRACT With the advancement of satellite remote sensing technology, object detection based on high‐resolution remote sensing imagery has emerged as a prominent research focus in the field of computer vision. Although numerous algorithms have been developed for remote sensing image object detection, they still suffer from challenges such as low ...
Hui Zong +5 more
wiley +1 more source
Optimized tracking for cooperative sensor systems in multipath environments [PDF]
Advances in Radio Science, 2008 In a cooperative sensor system for pedestrian protection, a pedestrian and other road users exchange data by means of radio frequency communication. In the proposed system, the pedestrian carries a transponder which is interrogated by a vehicle and sends
D. Schwarz, R. H. Rasshofer, E. M. Biebl
doaj
Behavior of Evaporation Ducts in Stable and Unstable Surface Layers
Radio Science, Volume 61, Issue 2, February 2026.Abstract The atmospheric surface layer over the ocean has a strong impact on electromagnetic (EM) wave propagation in the lowest 100 m of the atmosphere. Due to surface evaporation, a strong vertical gradient in water vapor forms in this layer, resulting in an evaporation duct which may greatly increase detection ranges for sensors and targets within ...
Katherine Mulreany, Qing Wang
wiley +1 more source
Transactions in GIS, Volume 30, Issue 1, February 2026.ABSTRACT This study examined GPS positioning accuracy in high‐density urban environments using Hong Kong as a representative case study. Through field measurements along 32 testing routes using three GPS devices, we evaluated GPS performance across diverse urban morphologies to assess associations between complex urban characteristics and positioning ...
Tianyu Li, Yanjia Cao, Grant McKenzie
wiley +1 more source
Advanced Science, Volume 13, Issue 6, 30 January 2026.This work introduces a beamforming‐based method to generate acoustic images from fiber‐optic distributed acoustic sensing (DAS) data. By performing 2D scanning around the sensing fiber, the approach enables near‐field imaging and localization of acoustic sources, even in regions distant from the fiber. A data‐driven DAS channel selection improves image
Marcelo A. Soto +1 more
wiley +1 more source
A Ray-Tracing-Based Single-Site Localization Method for Non-Line-of-Sight Environments
SensorsLocalization accuracy in non-line-of-sight (NLOS) scenarios is often hindered by the complex nature of multipath propagation. Traditional approaches typically focus on NLOS node identification and error mitigation techniques.
Shuo Hu, Lixin Guo, Zhongyu Liu
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A Scalable and Integrated Reconfigurable Intelligent Surface
Advanced Electronic Materials, Volume 12, Issue 1, 7 January 2026.A scalable X‐band reconfigurable intelligent surface is presented using one‐bit phase‐tunable unit cells with integrated FPGA control. The RIS supports fast, high‐speed reconfiguration through WiFi, LAN, and USB interfaces and can be scaled to multiple tiles. The design achieves over 20 dBi broadside gain and reliable 2D beam steering in both elevation
Zaid Akram +6 more
wiley +1 more source