Results 51 to 60 of about 663,875 (292)

Doppler Differential Positioning Technology Using the BDS/GPS Indoor Array Pseudolite System

Sensors, 2019
A Global Satellite Navigation System (GNSS) cannot provide normal location services in an indoor environment because the signals are blocked by buildings.
Xingli Gan, Baoguo Yu, Lu Huang, Ruicai Jia, Heng Zhang, Chuanzhen Sheng, Guangwei Fan, Boyuan Wang   +7 more
doaj   +1 more source

Photothermal Heat Spreading for Uniform Pixel Activation in NIR Laser‐Driven Thermochromic Liquid Crystal Displays

Advanced Materials Interfaces, EarlyView.
A pixelated full‐color display is driven by a 1064 nm near‐infrared laser without electrical wiring. A graphite photothermal layer converts light into heat, while an aluminum heat‐spreading layer redistributes it for uniform color within each pixel. Optimizing pixel size and spacing suppresses thermal crosstalk, enabling non‐contact reproduction of ...
Sang‐Mi Jeong, Hee Sung Seo, Taekyung Lim, Jonguk Yang, Sanghyun Ju   +4 more
wiley   +1 more source

Study on Adversarial Sample Attacks on Deep Learning Based Fingerprinting Indoor Localization [PDF]

Jisuanji gongcheng
This study investigated adversarial attacks on Deep Learning(DL) based Wi-Fi fingerprint indoor positioning systems, which have significantly improved indoor localization performance by effectively extracting deep features from Received Signal Strength ...
ZHANG Xuejun, XI Ayou, JIA Xiaohong, ZHANG Bin, LI Mei, DU Xiaogang, HUANG Haiyan
doaj   +1 more source

Recent Advances of Slip Sensors for Smart Robotics

Advanced Materials Technologies, EarlyView.
This review summarizes recent progress in robotic slip sensors across mechanical, electrical, thermal, optical, magnetic, and acoustic mechanisms, offering a comprehensive reference for the selection of slip sensors in robotic applications. In addition, current challenges and emerging trends are identified to advance the development of robust, adaptive,
Xingyu Zhang, Liao Wu, Shuai He, Zhao Sha, Yuwan Huang, Shuying Wu, Dewei Chu, Chun H. Wang, Shuhua Peng   +8 more
wiley   +1 more source

Map-aided multi-level indoor vehicle positioning

, 2017
In this paper, an indoor vehicle multi-level positioning algorithm is proposed that makes use of an indoor map, as well as dead-reckoning sensor information that is available in every car.
Noren, Olle,, Rickard Karlsson, Fredrik Gustafsson, Fritsche, Carsten,, Carsten Fritsche, Karlsson, G Rickard,, Olle Noren, Gustafsson, Fredrik,   +7 more
core   +1 more source

Liquid‐Crystal‐Based Reconfigurable Intelligent Surface for 7 GHz Mobile Communication

Advanced Materials Technologies, EarlyView.
The glass‐based liquid‐crystal reconfigurable intelligent surface (LC‐RIS) integrates active‐matrix driving and blind‐greedy phase optimization within a 5G‐NR OFDM framework. This enables continuously tunable and autonomous enhancement of wireless coverage. Leveraging the transparency and manufacturability of liquid crystal panels, it is ideally suited
Tien‐Lun Ting, Yuh‐Chyi Chang, Yi‐Chan Hung, Cheng‐Yuan Hsiao, Chao‐Kai Wen, Tsung‐Hsien Lin   +5 more
wiley   +1 more source

An RFID Indoor Positioning Algorithm Based on Support Vector Regression

Sensors, 2018
Nowadays, location-based services, which include services to identify the location of a person or an object, have many uses in social life. Though traditional GPS positioning can provide high quality positioning services in outdoor environments, due to ...
He Xu, Manxing Wu, Peng Li, Feng Zhu, Ruchuan Wang   +4 more
doaj   +1 more source

Virtual Cultural Tour Guidance System Integrated with IBeacon-based Indoor Positioning [PDF]

Jisuanji gongcheng, 2016
The 3D virtual tour system often provides immersive tour experience.It cannot offer information service about tour and is hard to fulfill users’ personalized requirement.To tackle this issue,an indoor positioning method based on IBeacon Bluetooth ...
WU Xiaozhu,CHEN Chongcheng,LIU Xianfeng,LI Jieguang,FANG Lina
doaj   +1 more source

Collision‐Resilient Winged Drones Enabled by Tensegrity Structures

Advanced Robotics Research, EarlyView.
Based on structures of birds such as the woodpeck, this article presents the collision‐resilient aerial robot, SWIFT. SWIFT leverages tensegrity structures in the fuselage and wings which allow it to undergo large deformations in a crash, without sustaining damage. Experiments show that SWIFT can reduce impact forces by 70% over conventional structures.
Omar Aloui, Raphael Zufferey, William Stewart, Mohammad Askari, Simon Jeger, Dario Floreano   +5 more
wiley   +1 more source

The Challenge of Dynamic Environments in Regard to RSSI-Based Indoor Wi-Fi Positioning—A Systematic Review

Future Internet
Among indoor positioning technologies, Wi-Fi fingerprinting using the Received Signal Strength Indicator (RSSI) is the most convenient and cost-effective method for indoor positioning.
Zi Yang Chia, Pey Yun Goh, Lee Yeng Ong, Shing Chiang Tan   +3 more
doaj   +1 more source