Results 91 to 100 of about 34,433 (291)

Reduction of secondary lobes in joint angle and delay estimation in angle of arrival localization to detect MAC address spoofing in wireless networks

, 2022
in this paper, we solve the problem of  secondary lobes that are due to noise that comes from constructive and destructive multipath interference that are resulted in received signal strength (RSS) variation over time. This is to develop a very efficient
El-Didamony, Eman Mohamed, Abbas, Sara Adel   +1 more
core   +2 more sources

Performance Evaluation of Deep Learning Approaches for Angle Estimation Based on AoA and DoA Estimation

Applied Sciences
Accurate Angle of Arrival (AoA) and Direction of Arrival (DoA) estimation is crucial for Indoor Positioning Systems (IPS). Traditional signal processing methods, such as MUSIC and ESPRIT, provide high-resolution estimation at the cost of high ...
Seoyoung Koh, Jaeho Lee
doaj   +1 more source

Mobile Sensor Waypoint Navigation via RF-Based Angle of Arrival Localization

International Journal of Distributed Sensor Networks, 2012
Over the past decade, wireless sensor networks have advanced in terms of hardware design, communication protocols, and resource efficiency. Recently, there has been growing interest in mobility, and several small-profile sensing devices that control ...
Isaac Amundson, Janos Sallai, Xenofon Koutsoukos, Akos Ledeczi   +3 more
doaj   +1 more source

Low‐Cost, Large‐Scale Nanoporous Metals by Mechanical Alloying, Oxide Reduction, and Dealloying of Powders

Advanced Engineering Materials, EarlyView.
Powder metal processing provides scalable advantages in nanoporous (np) metal development. Mechanical alloying is used to produce unique precursors for hybrid nanopore formation by oxide reduction and dealloying. As demonstrated in np Ag, this approach improves process efficiency while promoting smaller ligaments and larger pores, both of which are ...
Mark A. Atwater, Oliver A. Fowler
wiley   +1 more source

Non Parametric Distributed Inference in Sensor Networks Using Box Particles Messages

, 2014
This paper deals with the problem of inference in distributed systems where the probability model is stored in a distributed fashion. Graphical models provide powerful tools for modeling this kind of problems.
Haj Chhadé, Hiba, Gning, Amadou, Abdallah, F, Abdallah, Fahed, Simon, Julier, Haj Chhadé, H, Hiba Haj Chhadé, Julier, S, Julier, Simon, Amadou Gning, Imad Mougharbel, Mougharbel, I, Fahed Abdallah, Simon Julier, Gning, A, Mougharbel, Imad   +15 more
core   +1 more source

Angle-of-Arrival Measurement System Using Double RF Modulation Technique

IEEE Photonics Journal, 2019
A new technique for determining the angle of arrival (AoA) of an RF signal is presented. It is based on a cascaded modulator structure, where continuous wave light from an optical source is modulated by an incoming RF signal twice.
Hao Chen, Erwin Hoi Wing Chan
doaj   +1 more source

Planar Solid‐State Nanopores Toward Scalable Nanofluidic Integration Based on CMOS Technology

Advanced Engineering Materials, EarlyView.
We present a scalable silicon‐based fabrication strategy for planar solid‐state nanopores to enable their integration with complex nanofluidic systems. Prototype devices demonstrate normal voltage‐current characteristics, good noise performance, and appreciable streaming currents. Our CMOS‐compatible fabrication process offers precise geometric control
Ngan Hoang Pham, Chenyu Wen, Mohammad Hadi Khaksaran, Won‐Yong Lee, Javier Cruz, Klas Hjort, Dongping Wu, Shi‐Li Zhang   +7 more
wiley   +1 more source

High-precision robust broadband ultrasonic location and orientation estimation

, 2009
This paper presents an indoor broadband ultrasonic system for estimation of a mobile device’s 3-D location and three-axis orientation using beacons. It presents the first implementation and characterization of a real frequency hopping spread spectrum ...
J. R. Gonzalez, Gonzalez-Hernandez, Juan, C. J. Bleakley, Bleakley, Chris J.   +3 more
core   +2 more sources

Source Localization in Acoustic Sensor Networks via Constrained Least-Squares Optimization Using AOA and GROA Measurements

Sensors, 2018
A constrained least-squares (CLS) 3D source localization method is presented for acoustic sensor networks with sensor position errors. The proposed approach uses angles of arrivals (AOAs) and gain ratios of arrival (GROAs) measured simultaneously at each
Ji-An Luo, Si-Wei Pan, Dong-Liang Peng, Zhi Wang, Yan-Jun Li   +4 more
doaj   +1 more source

Localization using Angle-of-Arrival (AoA) Triangulation

Proceedings of the International Workshop on Environmental Sensing Systems for Smart Cities
Indoor localization is a long-standing challenge in mobile computing, with significant implications for enabling location-aware and intelligent applications within smart environments such as homes, offices, and retail spaces. As AI assistants such as Amazon Alexa and Google Nest become increasingly pervasive, microphone-equipped devices are emerging as
openaire   +2 more sources