Zobrazeno 1 - 10
of 3 873
pro vyhledávání: '"instantaneous frequency"'
Autor:
Hubert Stadnik, Bronisław Stec
Publikováno v:
International Journal of Electronics and Telecommunications, Vol vol. 70, Iss No 2, Pp 437-442 (2024)
Instantaneous frequency measurement devices are designated for very fast measurements of the current frequency value of microwave signals, even if they are very short in the time domain. Fast measurements of frequency temporary values may be based on
Externí odkaz:
https://doaj.org/article/a60708776b9d4f55b940b274f0f31c65
Publikováno v:
Омский научный вестник, Vol 2 (190), Pp 144-152 (2024)
The article proposes a new method for measuring frequency based on a one-bit ADC. In contrast to the known method of measuring frequency using a delay line, the developed structure of a meter that implements the proposed method makes it possible t
Externí odkaz:
https://doaj.org/article/940a196ffe364bf7ac96fb29eb7510b8
Autor:
Yazhou Qin, Yansong Cui
Publikováno v:
The Baltic Journal of Road and Bridge Engineering, Vol 19, Iss 3 (2024)
This study addresses the challenge of accurately correlating the bridge natural frequency with influencing factors during ambient vibration by analysing on-site monitored data. This knowledge gap arises from the combined uncertainties of environmenta
Externí odkaz:
https://doaj.org/article/225319bf553a4b73a05b1dd86a99c36d
Akademický článek
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Akademický článek
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Publikováno v:
Ingeniería, Vol 29, Iss 2, Pp e21311-e21311 (2024)
Context: Epilepsy is a neurological disease that affects more than 50 million people worldwide, causing recurrent seizures, with a significant impact on patients' quality of life due to abnormally synchronized neuronal activity. Method: This articl
Externí odkaz:
https://doaj.org/article/8a4cea127fc94fcd8e9851247b63aad8
Publikováno v:
IEEE Photonics Journal, Vol 16, Iss 2, Pp 1-12 (2024)
Rydberg atom receiver attracts much research interest for promising applications in communications and sensing. Generally, Rydberg atomic receiver is utilized with microwave frequency comb (MFC) to expand its detectable frequency range. MFC consists
Externí odkaz:
https://doaj.org/article/ce36d9f3919845fc960cececd9f0372d
Publikováno v:
Mathematics, Vol 12, Iss 19, p 3157 (2024)
Modal parameters are inherent characteristics of civil structures. Due to the effect of environmental factors and ambient loads, the physical and modal characteristics of a structure tend to change over time. Therefore, the effective identification o
Externí odkaz:
https://doaj.org/article/352e220cccac4b6fbe679b736e27c76d
Publikováno v:
Sensors, Vol 24, Iss 18, p 6026 (2024)
This paper develops a new frame for non-stationary signal separation, which is a combination of wavelet transform, clustering strategy and local maximum approximation. We provide a rigorous mathematical theoretical analysis and prove that the propose
Externí odkaz:
https://doaj.org/article/55cd5fce352a4ced9d177bd81f51abda
Publikováno v:
Advances in Bridge Engineering, Vol 4, Iss 1, Pp 1-18 (2023)
Abstract In bridge structural health monitoring, the response of the bridge while the vehicle is on the bridge, is called a vehicle-bridge interaction (VBI) response. If the vehicle and the bridge are dynamically coupled, the VBI response depends on
Externí odkaz:
https://doaj.org/article/280262e052934f129e79fde0a2e2ce1e