scholarly journals Spectral Attention-Driven Intelligent Target Signal Identification on a Wideband Spectrum

Author(s):  
Gihan J. Mendis ◽  
Jin Wei ◽  
Ariuna Madanayake ◽  
Soumyajit Mandal
2021 ◽  
Vol 2021 ◽  
pp. 1-12
Author(s):  
Shukui Song

Virtual reality is a computer system that creates a virtual world and then experiences through multiple senses. It is generated by a computer and stimulated by perception systems such as hearing, vision, touch, taste, and smell, providing users with a personal experience. Human-computer interaction is one of the core technologies of virtual reality. Wireless communication is the transmission of communications over long distances between multiple nodes without propagation through conductors or cables and can be carried out using radios, radios, etc. Wireless communication includes a variety of fixed, mobile, and portable applications such as two-way radios, mobile phones, personal digital assistants, and wireless networks. Other examples of radio wireless communication are GPS, garage door remotes, wireless mice, etc. Most wireless communication technologies use radio, including Wi-Fi with distances of just a few meters, but also deep space networks that communicate with Voyager 1 and distances of over millions of kilometers. With the continuous development of sensors and other supporting hardware facilities, the current development of human-computer interaction in virtual reality has made rapid progress. In the research to be conducted in this article, the virtual reality system used in this article cleverly integrates the three characteristics of immersion, interactivity, and conception, so that the experimenter can obtain more realistic data in comparison. To this end, this article first gives a general introduction to virtual reality technology and wireless communication tracking technology and then explains how to use wireless communication tracking technology to make the virtual reality interactive system smoother and smoother, as well as the introduction of its devices. This article explores and analyzes the possible or existing problems of wireless communication tracking technology in virtual reality interaction, hoping to contribute to the wider application of wireless communication tracking technology in virtual reality interaction. The positioning experiment on the wireless mobile signal identification points can be obtained. Among the 40 sensor nodes that are randomly deployed, when the interval of adjusting the mobile signal identification point to broadcast the current position information is 5 s, the average positioning error of the node is about 1.5 m; when the interval is 3 s, the average positioning error of the node is about 1.76 m. It can be seen that the positioning error of the node increases as the interval between the mobile signal identification points increases, which is consistent with the simulation detection result. When the node position of the target signal identification point is chosen to calculate does not just stay on the node communication circle, it introduces a certain localization distance difference, and the further the target signal identification point is from the position of the signal circle, the greater the error. Irregularity of RSS due to environmental changes analyzes the maximum error and provides the factors influencing the error and analyzing the maximum error and provide the factors that influence it.


Author(s):  
Zhenzhe Han ◽  
Cavallo Francesca ◽  
Konstantin Nikolic ◽  
Khalid Mirza ◽  
Christofer Toumazou

Author(s):  
O. Katzenberger ◽  
R. Debuyst ◽  
P. De Cannière ◽  
F. Dejehet ◽  
D. Aper ◽  
...  

2012 ◽  
Vol 522 ◽  
pp. 673-676
Author(s):  
Xi Li ◽  
Dan Feng Feng

In this paper, a application of signal identification by using fuzzy cluster is studied Based on the one order T-S model, an algorithm for online establishment the nonlinear model between the servo current and cutting force is presented by fuzzy likelihood function to derive fuzzy cluster. Finally, the experimental study has been given. The result showed that it can be regarded as a good dynamic identification algorithm for intelligent control of NC processing.


2020 ◽  
Author(s):  
Andrew Langbehn ◽  
Dasha Yermol ◽  
Fangyun Zhao ◽  
Christopher Thorstenson ◽  
Paula Niedenthal

Abstract According to the familiar axiom, the eyes are the window to the soul. However, wearing masks to prevent the spread of COVID-19 involves occluding a large portion of the face. Do the eyes carry all of the information we need to perceive each other’s emotions? We addressed this question in two studies. In the first, 162 Amazon Mechanical Turk (MTurk) workers saw videos of human faces displaying expressions of happiness, disgust, anger, and surprise that were fully visible or covered by N95, surgical, or cloth masks and rated the extent to which the expressions conveyed each of the four emotions. Across mask conditions, participants perceived significantly lower levels of the expressed (target) emotion and this was particularly true for expressions composed of greater facial action in the lower part of the faces. Furthermore, higher levels of other (non-target) emotions were perceived in masked compared to visible faces. In the second study, 60 MTurk workers rated the extent to which three types of smiles (reward, affiliation, and dominance smiles), either visible or masked, conveyed positive feelings, reassurance, and superiority. They reported that masked smiles communicated less of the target signal than visible faces, but not more of other possible signals. Political attitudes were not systematically associated with disruptions in the processing of facial expression caused by masking the face.


Sign in / Sign up

Export Citation Format

Share Document