Results 21 to 30 of about 3,178,978 (295)

Measurement of Radio-Frequency Radiation Pressure

open access: yes, 2018
We perform measurements of the radiation pressure of a radio-frequency (RF) electromagnetic field which may lead to a new SI-traceable power calibration.
Artusio-Glimpse, Alexandra   +5 more
core   +1 more source

High-Frequency Measurements [PDF]

open access: yesPhysics Today, 1952
Third Conference Next ...
openaire   +2 more sources

Ramsey interferometry with cold atoms in coherent population trapping

open access: yesAdvances in Physics: X
The utilization of Ramsey interferometry via coherent population trapping (CPT), which enables the optical interrogation of microwave transitions without the reliance on microwave cavities, plays a crucial role in the advancement of compact and low-power
Chengyin Han, Bo Lu, Chaohong Lee
doaj   +1 more source

Density–Density Correlation Spectra of Ultracold Bosonic Gas Released from a Deep 1D Optical Lattice

open access: yesEntropy
Density–density correlation analysis is a convenient diagnostic tool to reveal the hidden order in the strongly correlated phases of ultracold atoms. We report on a study of the density–density correlations of ultracold bosonic atoms which were initially
Yunzhi Tan   +5 more
doaj   +1 more source

Research on Pressure Compensation for the Rubidium Atomic Clock Working in Atmospheric Environment

open access: yesChinese Journal of Magnetic Resonance
Vapor cell rubidium atomic clock is widely used in the fields of satellite navigation and communication with advantages including small size, light weight, low power and maintenance cost.
LI Junyao   +8 more
doaj   +1 more source

Simulation of an Adaptive Method of Improving the Accuracy and Extending the Range of Frequency Signal Processing in a Frequency-to-Code Converter

open access: yesApplied Sciences, 2021
The article discusses the modification of one of the basic methods of converting successive periods of a variable frequency signal into numerical values representing them.
Piotr Warda
doaj   +1 more source

Quantum lock-in measurement of weak alternating signals

open access: yesQuantum Frontiers
The detection of weak time-dependent alternating signals in a strongly noisy background is an important problem in physics and a critical task in metrology. Quantum lock-in amplifier can extract alternating signals within extreme noises by using suitable
Min Zhuang   +3 more
doaj   +1 more source

Underwater passive manoeuvring target tracking with isogradient sound speed profile

open access: yesIET Radar, Sonar & Navigation, 2022
Compared with the traditional tracking problem, the underwater 3‐D passive manoeuvring target tracking faces the following challenging problems: (1) Since the signal propagation delay is varying and unknown, the relationship between the two adjacent ...
Jun Su, Yaan Li, Wasiq Ali
doaj   +1 more source

Precision packet-based frequency transfer based on oversampling [PDF]

open access: yes, 2017
Frequency synchronization of a distributed measurement system requires the transfer of an accurate frequency reference to all nodes. The use of a general-purpose packet-based network for this aim is analyzed in this paper, where oversampling is ...
Giorgi, Giada, Narduzzi, Claudio
core   +1 more source

Sickle Cell Disease Is an Inherent Risk for Asthma in a Sibling Comparison Study

open access: yesPediatric Blood &Cancer, EarlyView.
ABSTRACT Introduction Sickle cell disease (SCD) and asthma share a complex relationship. Although estimates vary, asthma prevalence in children with SCD is believed to be comparable to or higher than the general population. Determining whether SCD confers an increased risk for asthma remains challenging due to overlapping symptoms and the ...
Suhei C. Zuleta De Bernardis   +9 more
wiley   +1 more source

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