Enhanced detection of a low-frequency signal by using broad squeezed light and a bichromatic local oscillator
Sign Up to like & getrecommendations! Published in 2017 at "Physical Review A"
DOI: 10.1103/physreva.96.023808
Abstract: We experimentally study a protocol of using the broadband high frequency squeezed vacuum to detect the low-frequency signal. In this scheme, the lower sideband field of the squeezed light carries the low frequency modulation signal… read more here.
Keywords: detection; frequency; squeezed light; low frequency ... See more keywords
Study on Radio-Frequency Signal Gene Characteristics From the Perspective of Fractal Theory
Sign Up to like & getrecommendations! Published in 2019 at "IEEE Access"
DOI: 10.1109/access.2019.2938791
Abstract: Radio frequency signal identification technology is a non-password authentication method based on the physical layer hardware of the device. This paper explores the feature extraction and recognition method based on the gene characteristics of the… read more here.
Keywords: radio frequency; frequency signal; gene characteristics; frequency ... See more keywords
Model Predictive Current Control With Online Parameter Estimation for Synchronous Reluctance Machine Controlled by High-Frequency Signal Injection Position-Sensorless
Sign Up to like & getrecommendations! Published in 2022 at "IEEE Access"
DOI: 10.1109/access.2022.3156694
Abstract: Accurate machine parameters and rotor position information are essential in vector-controlled motor drive systems. However, machine parameter variations by various factors such as the current and the temperature degrade the performance of vector control. Also,… read more here.
Keywords: signal injection; machine; high frequency; frequency signal ... See more keywords
High-Frequency Signal Injection Method Based on Duty Cycle Shifting Without Maximum Fundamental Voltage Magnitude Loss
Sign Up to like & getrecommendations! Published in 2017 at "IEEE Journal of Emerging and Selected Topics in Power Electronics"
DOI: 10.1109/jestpe.2017.2690398
Abstract: High-frequency signal injection (HFSI) method is widely used in machine sensorless control in low speed operation range. The conventional HFSI methods are to superimpose high-frequency voltage signals onto the commanded stator voltage vector. Thus, the… read more here.
Keywords: voltage; machine; high frequency; frequency ... See more keywords
A $2q$-Order Difference-Set Approach to Eliminate Phase Ambiguity of a Single-Frequency Signal
Sign Up to like & getrecommendations! Published in 2019 at "IEEE Signal Processing Letters"
DOI: 10.1109/lsp.2019.2938632
Abstract: The resolution of the integer phase ambiguity among a group of spatially separated sensors is considered, where the smallest inter-sensor spacing exceeds half wavelength ($\lambda /2$) of a single-frequency signal. The sufficient condition that the… read more here.
Keywords: ambiguity; frequency signal; single frequency; phase ambiguity ... See more keywords
SPMSMs Sensorless Torque Estimation Using High-Frequency Signal Injection
Sign Up to like & getrecommendations! Published in 2020 at "IEEE Transactions on Industry Applications"
DOI: 10.1109/tia.2020.2975757
Abstract: Torque measurement/estimation in surface permanent magnet synchronous machines (SPMSMs) is needed in many applications. Torque measurement systems are expensive, require extra room, add weight, can introduce resonances into the system, and their performance can be… read more here.
Keywords: high frequency; torque estimation; frequency signal; injection ... See more keywords
Online Monitoring of Power Cables Tangent Delta Based on Low-Frequency Signal Injection Method
Sign Up to like & getrecommendations! Published in 2021 at "IEEE Transactions on Instrumentation and Measurement"
DOI: 10.1109/tim.2021.3069020
Abstract: To improve the reliability of power systems, online cable condition monitoring must be implemented to replace traditional regular power outage maintenance. Existing online monitoring methods have certain limitations. In this article, a novel method based… read more here.
Keywords: frequency signal; low frequency; power; online monitoring ... See more keywords
Quantum sensing of radio-frequency signal with NV centers in SiC
Sign Up to like & getrecommendations! Published in 2023 at "Science Advances"
DOI: 10.1126/sciadv.adg2080
Abstract: Silicon carbide is an emerging platform for quantum technologies that provides wafer scale and low-cost industrial fabrication. The material also hosts high-quality defects with long coherence times that can be used for quantum computation and… read more here.
Keywords: quantum; sensing radio; quantum sensing; radio frequency ... See more keywords
High-gain narrowband radio frequency signal amplifier based on a dual-loop optoelectronic oscillator.
Sign Up to like & getrecommendations! Published in 2022 at "Optics express"
DOI: 10.1364/oe.454634
Abstract: A novel photonic-assisted method for radio frequency (RF) signal amplification with high-gain and narrowband based on a dual-loop optoelectronic oscillator (OEO) is proposed and experimentally demonstrated. In the proposed system, the low-power RF signal is… read more here.
Keywords: high gain; gain; dual loop; radio frequency ... See more keywords