Frequency estimation based on variable frequency resolution concept

Ardeleanu, Andrei Sebastian; Donciu, Codrin

doi:10.1109/icepe.2012.6463836

Cited by 9 publications

(6 citation statements)

References 18 publications

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“…When there are multiple targets, the signal beat frequency is a multi-frequency signal. There are basically two ways to estimate the frequencies of a multi-frequency signal: time-domain methods and frequency-domain methods [ 7 , 8 ]. The frequency-domain methods are based on the fast Fourier transform (FFT) [ 9 , 10 ].…”

Section: Introductionmentioning

confidence: 99%

Enhanced Root-MUSIC Algorithm Based on Matrix Reconstruction for Frequency Estimation

Zhu

Zhang

et al. 2023

Sensors

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In recent years, frequency-modulated continuous wave (FMCW) radar has been widely used in automatic driving, settlement monitoring and other fields. The range accuracy is determined by the estimation of the signal beat frequency. The existing algorithms are unable to distinguish between signal components with similar frequencies. To address this problem, this study proposed an enhanced root-MUSIC algorithm based on matrix reconstruction. Firstly, based on the sparsity of a singular value vector, a convex optimization problem was formulated to identify a singular value vector. Two algorithms were proposed to solve the convex optimization problem according to whether the standard deviation of noise needed to be estimated, from which an optimized singular value vector was obtained. Then, a signal matrix was reconstructed using an optimized singular value vector, and the Hankel structure of the signal matrix was restored by utilizing the properties of the Hankel matrix. Finally, the conventional root-MUSIC algorithm was utilized to estimate the signal beat frequency. The simulation results showed that the proposed algorithm improved the frequency resolution of multi-frequency signals in a noisy environment, which is beneficial to improve the multi-target range accuracy and resolution capabilities of FMCW radar.

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Section: Introductionmentioning

confidence: 99%

Enhanced Root-MUSIC Algorithm Based on Matrix Reconstruction for Frequency Estimation

Zhu

Zhang

et al. 2023

Sensors

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“…Nonlinear loads, unlike the linear loads, don't draw only currents of fundamental frequency but also currents of harmonic frequencies. Using different frequency estimation techniques [16][17][18] the spectral content can also be used to detect the presence of a consumer in total load. Different researchers have found that there are correspondences between the fundamental and different harmonic components [11,15].…”

Section: Introductionmentioning

confidence: 99%

Hardware and software architecture of a smart meter based on electrical signature analysis

Temneanu

Ardeleanu

2013

2013 8th International Symposium on Advanced Topics in Electrical Engineering (Atee)

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The main resources used in electricity generation are becoming fewer, while the impact of renewable resources is still quite small. To allow the necessary time for the technology of renewable resources to mature, a requirement is to increase the energy efficiency. In this regard the smart grid concept was implemented, but whose efficiency depends on creation of a framework through which the end user can actively participate in the energy marketplace. End users must be able to understand how the energy is used so that they could find possibilities to increase the efficiency of energy. Within this paper the architecture of a smart system (smart meter) capable to disaggregate the whole energy consumption into individual consumers is presented. This way, the user will have a better understanding on how the energy is used, will find major consumers and will be able to reduce his consumption.

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“…The studies regarding the essential performances of ESD protective garments lead to a number of contradictory requirements when defining the ideal ESD garments: (i) high conductivity to facilitate the dissipation process and to avoid charge accumulation and (ii) high resistivity to prevent fast dissipation and to limit the energy transfer during discharging [2]. They also must have good shielding properties to reduce the intensity of the electrostatic fields generated under the garment [13] and anti-static properties to not generate electric charge when come in contact with other materials [14]. These requirements can't be met at the same time by a garment, thus a compromise will be considered.…”

Section: Introductionmentioning

confidence: 99%

Core Conductive Yarn Based Integral Knitted ESD Garments Part I. Metallic Core Conductive Yarns Investigation

Donciu

2013

AMR

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A research regarding the integral knitted structures for electrostatic discharge (ESD) protective garments with core conductive fibres is currently undergoing. The results of the research will be published in three papers. The current paper presents a study on the knitted structures made with metallic core conductive fibres. A number of 15 samples made with different types of fibres were manufactured and tested for their ESD characteristics. From the experimental results, conclusions were drawn about ESD performances of tested samples.

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Frequency estimation based on variable frequency resolution concept

Cited by 9 publications

References 18 publications

Enhanced Root-MUSIC Algorithm Based on Matrix Reconstruction for Frequency Estimation

Enhanced Root-MUSIC Algorithm Based on Matrix Reconstruction for Frequency Estimation

Hardware and software architecture of a smart meter based on electrical signature analysis

Core Conductive Yarn Based Integral Knitted ESD Garments Part I. Metallic Core Conductive Yarns Investigation

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