High two-signal dynamic range and accurate frequency measurement for close frequency separation wideband digital receiver using adaptive gain control and adaptive thresholding
In electronic-warfare (EW) receiver applications, real-time measurement of the radar signals' carrier frequencies is mandatory and considered to be one of the most important radar parameters. Accurate frequency detection can be used to sort and deinterleave signals in a dense signal environment...
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Published in | Integration (Amsterdam) Vol. 72; pp. 72 - 81 |
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Main Authors | , |
Format | Journal Article |
Language | English |
Published |
Amsterdam
Elsevier B.V
01.05.2020
Elsevier BV |
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Abstract | In electronic-warfare (EW) receiver applications, real-time measurement of the radar signals' carrier frequencies is mandatory and considered to be one of the most important radar parameters. Accurate frequency detection can be used to sort and deinterleave signals in a dense signal environment where multiple signals arrive simultaneously presenting severe problems unless they can be differentiated appropriately. Researchers and engineers are actively looking for new algorithms for high resolution wideband receivers with easier implementation. This paper presents an adaptive gain control and dynamic thresholding wideband digital receiver to accurately detect two simultaneous high dynamic range signals, even when their signal frequencies are very close. The proposed fast Fourier transform (FFT) based receiver examines incoming signal characteristics and provides real-time accomplishment of these tasks, by way of using an adaptive gain-control amplifier, a squarer, two analog-to-digital converters, and two FFT's. The wideband receiver offers high probability of intercept over wide instantaneous RF bandwidths, high dynamic ranges and sensitivity. Two simultaneous signal accommodations and their characteristics are provided to demonstrate the improvements over presently used receivers in this field. |
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AbstractList | In electronic-warfare (EW) receiver applications, real-time measurement of the radar signals' carrier frequencies is mandatory and considered to be one of the most important radar parameters. Accurate frequency detection can be used to sort and deinterleave signals in a dense signal environment where multiple signals arrive simultaneously presenting severe problems unless they can be differentiated appropriately. Researchers and engineers are actively looking for new algorithms for high resolution wideband receivers with easier implementation. This paper presents an adaptive gain control and dynamic thresholding wideband digital receiver to accurately detect two simultaneous high dynamic range signals, even when their signal frequencies are very close. The proposed fast Fourier transform (FFT) based receiver examines incoming signal characteristics and provides real-time accomplishment of these tasks, by way of using an adaptive gain-control amplifier, a squarer, two analog-to-digital converters, and two FFT's. The wideband receiver offers high probability of intercept over wide instantaneous RF bandwidths, high dynamic ranges and sensitivity. Two simultaneous signal accommodations and their characteristics are provided to demonstrate the improvements over presently used receivers in this field. |
Author | Chen, Chien-In Henry Liu, Feiran |
Author_xml | – sequence: 1 givenname: Feiran surname: Liu fullname: Liu, Feiran – sequence: 2 givenname: Chien-In Henry surname: Chen fullname: Chen, Chien-In Henry email: henry.chen@wright.edu |
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Cites_doi | 10.1109/22.643832 10.1109/TCSII.2013.2268411 10.1109/22.989955 10.1109/TAP.1986.1143830 10.1109/TCSII.2015.2435522 10.1109/TAES.2008.4667732 10.1109/TIM.2009.2012962 10.1109/TSP.2017.2718975 10.1109/TIM.2005.847206 10.1109/TCSI.2013.2246251 10.1109/TVLSI.2016.2567784 10.1109/TVLSI.2014.2361209 10.1109/82.338622 10.1109/TMTT.2007.892818 10.1109/TIM.2010.2102394 10.1109/TCSI.2015.2495724 10.1109/LPT.2007.913337 10.1109/TAES.2013.6494375 |
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Keywords | Wideband digital receiver Two-signal dynamic range Fast Fourier Transform (FFT) Electronic-warfare (EW) Multiple-signal detection |
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Snippet | In electronic-warfare (EW) receiver applications, real-time measurement of the radar signals' carrier frequencies is mandatory and considered to be one of the... |
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SubjectTerms | Adaptive control Algorithms Amplification Analog to digital conversion Analog to digital converters Broadband Carrier frequencies Dynamic range Electronic warfare Electronic-warfare (EW) Fast Fourier Transform (FFT) Fast Fourier transformations Fourier transforms Frequency measurement Gain Multiple-signal detection Radar detection Radar systems Real time Receivers Two-signal dynamic range Wideband digital receiver |
Title | High two-signal dynamic range and accurate frequency measurement for close frequency separation wideband digital receiver using adaptive gain control and adaptive thresholding |
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