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Quadrature compressive sampling (QuadCS) is a newly introduced sub-Nyquist sampling for acquiring inphase and quadrature (I/Q) components of radio-frequency signals. For applications to pulse-Doppler radars, the QuadCS outputs can be…

信息论 · 计算机科学 2014-02-27 Chao Liu , Feng Xi , Shengyao Chen , Zhong Liu

The European Pulsar Timing Array (EPTA) network is a collaboration between the five largest radio telescopes in Europe aiming to study the astrophysics of millisecond pulsars and to detect cosmological gravitational waves in the nano-Hertz…

星系天体物理 · 物理学 2010-02-04 K. Lazaridis

This paper presents a novel time synchronization attack (TSA) model for the Global Positioning System (GPS) based on clock data behavior changes in a higher-order derivative domain. Further, the time synchronization attack rejection and…

信号处理 · 电气工程与系统科学 2021-03-02 Erick Schmidt , Junhwan Lee , Nikolaos Gatsis , David Akopian

State of the art detector readout electronics require high-throughput data acquisition (DAQ) systems. In many applications, e. g. for medical imaging, the front-end electronics are set up as separate modules in a distributed DAQ. A…

仪器与探测器 · 物理学 2016-06-23 P. Födisch , B. Lange , J. Sandmann , A. Büchner , W. Enghardt , P. Kaever

The experimental implementation of the polarization encoding system is presented using weak coherent pulses at a low enough frequency. The optical pulses are generated through intensity modulation at the repetition rate of $10$ pulses/sec…

量子物理 · 物理学 2025-06-04 Zeshan Haider

Considering the OPERA neutrino-velocity measurement from the point of view of a GPS satellite we find that the detector at Gran Sasso has a velocity component in the order of $10^{-5}c$ towards the neutrino emission location at CERN. On…

综合物理 · 物理学 2011-11-22 Ronald A. J. van Elburg

Integrated photonics has the advantages of miniaturization, low cost, and CMOS compatibility, and it provides a stable, highly integrated, and practical platform for quantum key distribution (QKD). While photonic integration of optical…

量子物理 · 物理学 2020-07-08 Lingwen Kong , Zhihao Li , Congxiu Li , Lin Cao , Zeyu Xing , Junqin Cao , Yaxin Wang , Xinlun Cai , Xiaoqi Zhou

Many scientific and astronomical instruments need precise time measurement with high resolution between two or more events which is very challenging since decades. Presently a fast response of high resolution 17.1ps Digital Event Timer…

仪器与探测器 · 物理学 2021-10-25 Farhat Iqbal , Waheed Rathore , Khawar Iqbal , Glulam. Jaffer

Quantum key distribution (QKD) has the potential to improve communications security by offering cryptographic keys whose security relies on the fundamental properties of quantum physics. The use of a trusted quantum receiver on an orbiting…

A PC based high speed silicon microstrip beam telescope consisting of several independent modules is presented. Every module contains an AC-coupled double sided silicon microstrip sensor and a complete set of analog and digital signal…

仪器与探测器 · 物理学 2015-06-26 J. Treis , P. Fischer , L. Klingbeil , H. Krueger , N. Wermes , T. Lari

To meet the stringent time calibration requirements for the Belle II experiment upgrade, particularly for its large-size KL and Muon Detector comprising tens of thousands of scintillator channels with time resolutions better than 100 ps, we…

仪器与探测器 · 物理学 2026-02-23 Ziyu Liu , Xiyang Wang , Shiming Zou , Xiaolong Wang , Junhao Yin , Minggang Zhao

Quantum key distribution (QKD) allows two users to communicate with theoretically provable secrecy by encoding information on photonic qubits. Current encoders are complex, however, which reduces their appeal for practical use and…

The rigorous analysis of specialized physical processes often demands custom data acquisition architectures that offer flexibility and precision beyond the capabilities of general-purpose commercial loggers. This paper presents the design…

Global Navigation Satellite Systems (GNSSs), such as GPS and Galileo, provide precise time and space coordinates globally and constitute part of the critical infrastructure of modern society. To reliably operate GNSS, a highly accurate and…

Hearth Rate (HR) monitoring is increasingly performed in wrist-worn devices using low-cost photoplethysmography (PPG) sensors. However, Motion Artifacts (MAs) caused by movements of the subject's arm affect the performance of PPG-based HR…

信号处理 · 电气工程与系统科学 2022-03-29 Alessio Burrello , Daniele Jahier Pagliari , Matteo Risso , Simone Benatti , Enrico Macii , Luca Benini , Massimo Poncino

Precision timing of highly stable milli-second pulsars is a promising technique for the detection of very low frequency sources of gravitational waves. In any single pulsar, a stochastic gravitational wave signal appears as an additional…

广义相对论与量子宇宙学 · 物理学 2016-06-01 Neil J. Cornish , Laura M. Sampson

Pulsar timing uses the highly stable pulsar spin period to investigate many astrophysical topics. In particular, pulsar timing arrays make use of a set of extremely well-timed pulsars and their time correlations as a challenging detector of…

星系天体物理 · 物理学 2021-12-16 Michele Maiorano , Francesco De Paolis , Achille A. Nucita

We present the design and first test results of a new FADC-based data acquisition (DAQ) system for the Grande array of the KASCADE-Grande experiment. The original KASCADE experiment at the Forschungszentrum Karlsruhe, Germany, has been…

天体物理学 · 物理学 2009-11-13 W. Walkowiak , KASCADE-Grande collaboration

Fast timing detectors are an essential element in the experimental setup for time-of-flight (ToF) mass measurements of unstable nuclei. We have upgraded the scintillator detectors used in experiments at the National Superconducting…

Cell search engineers face significant challenge in reducing computation time to meet the requirements for fast initial access and radio link recovery. Since the majority of cell search time is consumed by Primary Synchronization Signal…

信号处理 · 电气工程与系统科学 2026-04-01 Bitna Kim , Seungyeon Lee , Yelan Lee , Juyeop Kim
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