Results 21 to 30 of about 882,304 (195)

YOLO Network-Based Extraction of Target Geometry From Time-Frequency Representation

open access: yesIEEE Access
In response to challenges in target geometric parameter extraction from radar echoes, an improved YOLOv8 neural network model is proposed in this paper to recognize target types and extract geometric parameters of targets from time-frequency ...
Jingyuan Han, Kunyi Guo, Xinqing Sheng
doaj   +1 more source

The beamformer and correlator for the Large European Array for Pulsars [PDF]

open access: yes, 2017
The Large European Array for Pulsars combines Europe's largest radio telescopes to form a tied-array telescope that provides high signal-to-noise observations of millisecond pulsars (MSPs) with the objective to increase the sensitivity of detecting low ...
Bassa, C. G.   +12 more
core   +6 more sources

Bearing estimation of low probability of intercept sources via polynomial matrices and sparse linear arrays

open access: yesIET Radar, Sonar & Navigation, 2021
Recent years have seen a steady convergence of Radar and Communications band Radio Frequency (RF) transceiver systems. Not only have Communications systems colonised large swathes of previously allocated Radar bands but there is also a convergence of ...
William Coventry   +3 more
doaj   +1 more source

Commensal observing with the Allen Telescope array: software command and control

open access: yes, 2010
The Allen Telescope Array (ATA) is a Large-Number-Small-Diameter radio telescope array currently with 42 individual antennas and 5 independent back-end science systems (2 imaging FX correlators and 3 time domain beam formers) located at the Hat Creek ...
Ackermann, Robert   +8 more
core   +1 more source

Spread spectrum algorithm resistance to wideband non-stationary interference

open access: yesThe Journal of Engineering, 2019
This study proposes a multi-ary modulation chirp spread spectrum algorithm specific for the unmanned aerial vehicles field. It further introduces the corresponding fractional Fourier transform de-spreading algorithm and the hardware implementation of the
Chenlu Zhang   +3 more
doaj   +1 more source

Software: Based radio architecture

open access: yesVojnotehnički Glasnik, 2000
Radio-communications date from more than a century. Radio-devices of the past were solely based on hardware solutions. However, modern technology has reached the level where it is possible to design such a radio-device with characteristics (modulation ...
Dejan M. Savić   +2 more
doaj   +1 more source

Research on AFDX network configuration testing technology

open access: yesXibei Gongye Daxue Xuebao
The terminal system, as a key part of AFDX network data transmission, determines the communication performance of the entire AFDX network. In order to test the functionality of the verification end system and evaluate the transmission performance of the ...
CHEN Fang   +4 more
doaj   +1 more source

Transceivers as a Resource: Scheduling Time and Bandwidth in Software-Defined Radio

open access: yesIEEE Access, 2020
In the future, software-defined radio may enable a mobile device to support multiple wireless protocols implemented as software applications. These applications, often referred to as waveform applications, could be added, updated, or removed from a ...
Nathan D. Price   +2 more
doaj   +1 more source

Development of universal software radio peripheral amplifier for underwater acoustic platform using software defined radio [PDF]

open access: yes, 2010
First and foremost, the development of a modem using the USRP has applications in oceanographic monitoring and communication. Improved acoustic connecting would allow more efficient transfer of information between Underwater Acoustic (UWA) equipment such
Kalash, Haydar Sabeeh
core  

A Polyphase Multipath Technique for Software-Defined Radio Transmitters [PDF]

open access: yes, 2006
Transmitter circuits using large signal swings and hard-switched mixers are power-efficient, but also produce unwanted harmonics and sidebands, which are commonly removed using dedicated filters.
Klumperink, Eric A.M.   +4 more
core   +2 more sources

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