Results 101 to 110 of about 2,684 (220)

Study on the mechanical properties and deformation mechanism of copper with different volume fractions of gradient structure

open access: yesJournal of Materials Research and Technology
In this study, ultrasonic rolling process (USRP) were performed on the rolled copper samples (with an initial grain size of 11.4 μm) to obtain the gradient structure (GS), which comprises nanocrystalline layer (NL), deformed layer (DL), and center layer (
Ruoxu Liu   +4 more
doaj   +1 more source

Effect of contact stress and slip amplitude on fretting fatigue behaviour of ultrasonic surface nanocrystallized TC11 titanium alloy

open access: yesJournal of Materials Research and Technology
In this paper, combined experimental and numerical methods are applied to investigate the effect of different contact stress and slip amplitude on the fretting fatigue (FF) behaviour of TC11 titanium alloy with gradient nanostructure introduced by ...
Kaifa Fan   +7 more
doaj   +1 more source

Manual of laboratory practices for digital modulations using USRP 2901

open access: yes, 2023
En este proyecto, se han diseñado prácticas de laboratorio para enriquecer la enseñanza en el campo de las telecomunicaciones en la Universidad Distrital Francisco José De Caldas. Estas prácticas se centran en el uso de herramientas de Radio Definido por
Clavijo Quintero, Daniel Eduardo   +1 more
core  

Application of Digital Signal Processing in USRP Satellite Signal Detection

open access: yes, 2017
The Universal Software Radio Peripheral development technique is designing and implementing radio frequency based systems. The distinctiveness originates from the interchangeable daughterboard within the USRP.
Javidi, Giti   +3 more
core   +1 more source

Thermal-mechanical coupled regulation of Ti-22Al-25Nb/Ti-6Al-4V bimetallic structures during an alternating ultrasonic surface rolling – laser directed energy deposition hybrid process

open access: yesVirtual and Physical Prototyping
Although bimetallic structures have demonstrated great thermomechanical compatibility under extreme temperature gradients, the poor bonding performance and damage resistance still hinder wider application. In this study, an alternating ultrasonic surface
Tingyu Ge   +5 more
doaj   +1 more source

Design and implementation of a USRP–SDR based radar experiment

open access: yes, 2015
Software Defined Radio (SDR) Based Radar is a new radar concept, it was proposed by Professor LU Yilong in NTU, which provides user more flexibility in waveform diversity for radar application.
Feng, Su Mei
core   +1 more source

Izrada FM prijemnika primjenom LABVIEW programa i NI USRP 2920 uređaja

open access: yes, 2018
U radu je obrađena tematika tehnologije softverski definiranih radijskih uređaja. Izložene su osnove uređaja baziranih na tehnologiji softverski definiranog radijskog prijemnika te važnost i potencijali SDR tehnologije. Rad se također bavi opisom razlika
Humić, Damir
core  

Radio Direction Finding Implementing Music Algorithm With Usrp Node Arrays

open access: yes, 2021
Direction Finding techniques are widely used across the fields of radar, telecommunications, geolocation systems, sonar, among many others to estimate the reference position of the incoming signal source. For this, the implementation of antenna arrays is
Valdez, Kevin
core  

Study of wireless experiment platform in 60 GHz

open access: yesDianxin kexue, 2016
A scheme of 60 GHz wireless experimental platform was presented.The platform was made up of NI USRP(transceiver module),NetFPGA(data processing module)and PC(control module).NI USRP was connected with NetFPGA by Gigabit Nthernet interfaces,while NetFPGA ...
Yuannian QIN, Chuan ZOU, Zhaoyu TENG
doaj   +2 more sources

Sistema de conmutación y control de llamadas basado en OpenBTS y Asterisk

open access: yesMaskana, 2016
RESUMEN El presente trabajo empleó herramientas de hardware y software de licencia libre para el establecimiento de una estación base celular (BTS) de bajo costo y fácil implementación.
Manuel Quiñones   +3 more
doaj  

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