Results 1 to 10 of about 63,843 (266)

A generation and distribution system of clock signal source for signal acquisition system

open access: yesEngineering Reports, 2022
The clock signal is the heartbeat of modern electronic system, and demands of increasing high‐quality signal has been raised, with the development of science and technology in the field of electronic information.
Lei Zhang   +5 more
doaj   +2 more sources

Power-Oriented Monitoring of Clock Signals in FPGA Systems for Critical Application

open access: yesSensors, 2021
This paper presents a power-oriented monitoring of clock signals that is designed to avoid synchronization failure in computer systems such as FPGAs.
Oleksandr Drozd   +5 more
doaj   +1 more source

Design and test of a C band local oscillator and clock device in LLRF

open access: yesHe jishu, 2021
BackgroundThe linear accelerator of Shanghai soft X-ray free-electron laser facility (SXFEL) operates at 5 712 MHz frequency. In the low level radio frequency (LLRF) system, C band microwave signals were down converted from the 5 686.556 MHz local ...
XIAO Chengcheng   +3 more
doaj   +1 more source

FPGA-based Collection Method for Power Information of Clock Synchronization [PDF]

open access: yesJisuanji gongcheng, 2020
Traditional asynchronous acquisition method affects the signal-to-noise ratio of collected power information information,resulting in a decrease in the success rate of power information analysis.To address the problem of asynchronous acquisition,this ...
SONG An, WANG Qin, GU Dawu, GUO Zheng, LIU Junrong, ZHANG Chi
doaj   +1 more source

Measurement and Analysis of Atomic Relaxation Time in Active Hydrogen Atomic Clocks

open access: yesChinese Journal of Magnetic Resonance, 2022
The atomic relaxation time of a hydrogen atomic clock is the time required for atomic system after the selected state removing the atoms of the ground state hyperfine energy level (F = 0, mF = 0) and (F = 1, mF = −1) state to change from the (F = 1, mF =
LIANG Yue, XIE Yong-hui, CHEN Peng-fei
doaj   +1 more source

Role of Sleep Restriction in Daily Rhythms of Expression of Hypothalamic Core Clock Genes in Mice

open access: yesCurrent Issues in Molecular Biology, 2022
Lack of sleep time is a menace to modern people, and it leads to chronic diseases and mental illnesses. Circadian processes control sleep, but little is known about how sleep affects the circadian system.
Weitian Li   +4 more
doaj   +1 more source

Clock Synchronization Over Networks: Identifiability of the Sawtooth Model

open access: yesIEEE Open Journal of Signal Processing, 2020
In this paper, we analyze the two-node joint clock synchronization and ranging problem. We focus on the case of nodes that employ time-to-digital converters to determine the range between them precisely.
Pol del Aguila Pla   +4 more
doaj   +1 more source

UNDERWATER ACOUSTIC MODEM WITH HIGH PRECISION RANGING CAPABILITY BASED ON SECOND-LEVEL CESIUM ATOMIC CLOCK [PDF]

open access: yesThe International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2022
Equipped with a high-precision atomic clock can significantly improve the ranging accuracy of the underwater acoustic ranging system. However, the adverse characteristic of underwater acoustic channel (UAC) seriously deteriorates the ranging accuracy. In
J. Li   +6 more
doaj   +1 more source

Decawave UWB Clock Drift Correction and Power Self-Calibration

open access: yesSensors, 2019
The position accuracy based on Decawave Ultra-Wideband (UWB) is affected mainly by three factors: hardware delays, clock drift, and signal power. This article discusses the last two factors.
Juri Sidorenko   +4 more
doaj   +1 more source

Implementation of a rotor position determination system for a switched reluctance motor in FPGA devices [PDF]

open access: yesITM Web of Conferences, 2019
The paper presents three rotor position detection modules implemented in FPGA devices. The modules are characterized by different methods of implementation and were developed for use with a switched reluctance drive.
Rataj Daniel, Tomczewski Krzysztof
doaj   +1 more source

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