Results 11 to 20 of about 35,772 (256)
Instantaneous Frequency Estimation Algorithm for Power Systems [PDF]
JES: Journal of Engineering Sciences, 2022 This paper deals with the problem of the Instantaneous Frequency (IF) estimation of power systems, to be adopted for example in Phasor Measurement Units (PMUs) used for monitoring, control, and protection.
Christina Aziz +2 more
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Instantaneous Frequency Measurement with Reasonable Resolution and Simple Structure
Photonics, 2022 Microwave signals carry important intelligence information in electronic warfare. Hence, the measurement of microwave signals plays a very important role.
Qing-An Ding +9 more
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Research of Instantaneous Frequency Measurement Receiver
2020 Dynamics of Systems, Mechanisms and Machines (Dynamics), 2020 В данной работе рассматривается двухканальный МИЧ-приемник с двумя линиями задержки. Проведя математическое моделирование МИЧ-приемника, были получены зависимости СКО оценки частоты от задержки при различных соотношениях С/Ш на входе. Также получена зависимость вероятности ошибочного определения зоны неоднозначности, приводящей к увеличению СКО оценки ...
M. A. Kvachev +2 more
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Performance Analysis Of Mono-bit Digital Instantaneous Frequency Measurement (Difm) Device [PDF]
AUT Journal of Electrical Engineering, 2017 Instantaneous Frequency Measurement (IFM) devices are the essential parts of anyESM, ELINT, and RWR receiver. Analog IFMs have been used for several decades. However, thesedevices are bulky, complex and expensive.
Y. Norouzi, H. Shahbazi, S. Mirzaei
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Amplitude-Independent Photonic Instantaneous Frequency Measurement With Improved Sensitivity
IEEE Photonics Journal, 2012 A technique for improving the sensitivity of a class of broadband RF photonic instantaneous frequency measurement (IFM) systems is proposed and practically demonstrated.
Niusha Sarkhosh +2 more
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Effect of Duration and Frequency of Acoustic Doppler Velocimetry Measurement on Calculation of Turbulent Flow Characteristics [PDF]
محیط زیست و مهندسی آب, 2022 Acoustic Doppler velocimetry (ADV) is one of the most suitable devices for measuring flow characteristics. Determination of measurement frequency and duration, in a way that the results are calculated with the lowest error, is very important. The goal of
Mohammad Reza Maddahi, Majid Rahimpour
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Photonics-Assisted Non-Scanning High-Accuracy Frequency Measurement Using Low-Speed Components
IEEE Photonics Journal, 2019 Instantaneous frequency measurement of microwave signals is a fundamental functionality for applications including radar and electronic warfare. Photonic techniques have potential to enlarge the measurable frequency range, however, most of photonics ...
Zhiqiang Shen +4 more
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Instantaneous Microwave Frequency Measurement Based on Two Cascaded Photonic Crystal Nanocavities
IEEE Photonics Journal, 2020 We propose and experimentally demonstrate a photonic-assist measurement of microwave frequency by utilizing two cascaded photonic crystal (PC) cavities.
Li Liu, Wei Xue
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IEEE Photonics Journal, 2012 We propose and demonstrate a novel reconfigurable instantaneous frequency measurement (IFM) system based on the dual-parallel Mach-Zehnder modulator (DPMZM).
Wei Li, Ning Hua Zhu, Li Xian Wang
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Energies, 2021 This article proposes a measurement solution designed to monitor the instantaneous frequency in power systems. It uses a data acquisition module and a GPS receiver for time stamping and traceability.
Jose-María Sierra-Fernández +5 more
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