Results 11 to 20 of about 37,322 (294)
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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Broadband Instantaneous Frequency Measurement Using Frequency-to-Time Mapping and Channelization
PhotonicsA photonic instantaneous microwave frequency measurement scheme based on frequency-to-time mapping and channelization is proposed. An unknown signal is divided into four channels and mixed with a broadband linear frequency-modulated signal. The frequency
Shaobo Li +6 more
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Journal of Telecommunications and Information Technology, 2016 In this article questions related to the development instantaneous radio frequency measurement system based on application in them original ways of the amplitude-phase modulation transformation of single-frequency optical carrier by a radio signal in ...
Oleg Gennadyevich Morozov +1 more
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Photonic-based instantaneous microwave frequency measurement with extended range
Optics Communications, 2011 A novel approach to extend the frequency range and improve the resolution of photonic techniques for microwave frequency measurements based on frequency-to-power mapping is demonstrated. The simultaneous use of several amplitude comparison functions allows the extension of the measurement beyond a single monotonic region. Experimental results between 7
Vidal, Borja, B. Vidal
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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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IEEE Photonics Journal, 2022 This paper presents a photonics-based instantaneous microwave frequency measurement system. The system operates based on the frequency-to-power mapping technique.
Henghao Chen +2 more
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Photonics-enabled sub-Nyquist radio frequency sensing based on temporal channelization and compressive sensing [PDF]
, 2014 A novel approach to sensing broadband radio frequency (RF) spectrum beyond the Nyquist limit based on photonic temporal channelization and compressive sensing is proposed.
Wang, Chao +3 more
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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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