Advanced Chirp Transform Spectrometer with Novel Digital Pulse Compression Method for Spectrum Detection

Based on chirp transform and pulse compression technology, chirp transform spectrometers (CTSs) can be used to perform high-resolution and real-time spectrum measurements. Nowadays, they are widely applied for weather and astronomical observations. The surface acoustic wave (SAW) filter is a key dev...
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Autor*in:	Quan Zhao [verfasserIn] Ling Tong [verfasserIn] Bo Gao [verfasserIn]

Format:	E-Artikel
Sprache:	Englisch

Erschienen:	2021

Schlagwörter:	chirp transform spectrometer SAW filters digital pulse compression spectrum detection

Übergeordnetes Werk:	In: Applied Sciences - MDPI AG, 2012, 11(2021), 3, p 960
Übergeordnetes Werk:	volume:11 ; year:2021 ; number:3, p 960

Links:	Link aufrufen Link aufrufen Link aufrufen Journal toc

DOI / URN:	10.3390/app11030960

Katalog-ID:	DOAJ05529667X

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source	In Applied Sciences 11(2021), 3, p 960 volume:11 year:2021 number:3, p 960
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topic_facet	chirp transform spectrometer SAW filters digital pulse compression spectrum detection Technology T Engineering (General). Civil engineering (General) Biology (General) Physics Chemistry
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container_title	Applied Sciences
authorswithroles_txt_mv	Quan Zhao @@aut@@ Ling Tong @@aut@@ Bo Gao @@aut@@
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callnumber-first	T - Technology
author	Quan Zhao
spellingShingle	Quan Zhao misc TA1-2040 misc QH301-705.5 misc QC1-999 misc QD1-999 misc chirp transform spectrometer misc SAW filters misc digital pulse compression misc spectrum detection misc Technology misc T misc Engineering (General). Civil engineering (General) misc Biology (General) misc Physics misc Chemistry Advanced Chirp Transform Spectrometer with Novel Digital Pulse Compression Method for Spectrum Detection
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topic_title	TA1-2040 QH301-705.5 QC1-999 QD1-999 Advanced Chirp Transform Spectrometer with Novel Digital Pulse Compression Method for Spectrum Detection chirp transform spectrometer SAW filters digital pulse compression spectrum detection
topic	misc TA1-2040 misc QH301-705.5 misc QC1-999 misc QD1-999 misc chirp transform spectrometer misc SAW filters misc digital pulse compression misc spectrum detection misc Technology misc T misc Engineering (General). Civil engineering (General) misc Biology (General) misc Physics misc Chemistry
topic_unstemmed	misc TA1-2040 misc QH301-705.5 misc QC1-999 misc QD1-999 misc chirp transform spectrometer misc SAW filters misc digital pulse compression misc spectrum detection misc Technology misc T misc Engineering (General). Civil engineering (General) misc Biology (General) misc Physics misc Chemistry
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title	Advanced Chirp Transform Spectrometer with Novel Digital Pulse Compression Method for Spectrum Detection
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title_full	Advanced Chirp Transform Spectrometer with Novel Digital Pulse Compression Method for Spectrum Detection
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title_sort	advanced chirp transform spectrometer with novel digital pulse compression method for spectrum detection
callnumber	TA1-2040
title_auth	Advanced Chirp Transform Spectrometer with Novel Digital Pulse Compression Method for Spectrum Detection
abstract	Based on chirp transform and pulse compression technology, chirp transform spectrometers (CTSs) can be used to perform high-resolution and real-time spectrum measurements. Nowadays, they are widely applied for weather and astronomical observations. The surface acoustic wave (SAW) filter is a key device for pulse compression. The system performance is significantly affected by the dispersion characteristics match and the large insertion loss of the SAW filters. In this paper, a linear phase sampling and accumulating (LPSA) algorithm was developed to replace the matched filter for fast pulse compression. By selecting and accumulating the sampling points satisfying a specific periodic phase distribution, the intermediate frequency (IF) chirp signal carrying the information of the input signal could be detected and compressed. Spectrum measurements across the entire operational bandwidth could be performed by shifting the fixed sampling points in the time domain. A two-stage frequency resolution subdivision method was also developed for the fast pulse compression of the sparse spectrum, which was shown to significantly improve the calculation speed. The simulation and experiment results demonstrate that the LPSA method can realize fast pulse compression with adequate high amplitude accuracy and frequency resolution. Compared to existing digital pulse compression technology, this method can significantly reduce the number of required calculations, especially for measurements of sparse signals.
abstractGer	Based on chirp transform and pulse compression technology, chirp transform spectrometers (CTSs) can be used to perform high-resolution and real-time spectrum measurements. Nowadays, they are widely applied for weather and astronomical observations. The surface acoustic wave (SAW) filter is a key device for pulse compression. The system performance is significantly affected by the dispersion characteristics match and the large insertion loss of the SAW filters. In this paper, a linear phase sampling and accumulating (LPSA) algorithm was developed to replace the matched filter for fast pulse compression. By selecting and accumulating the sampling points satisfying a specific periodic phase distribution, the intermediate frequency (IF) chirp signal carrying the information of the input signal could be detected and compressed. Spectrum measurements across the entire operational bandwidth could be performed by shifting the fixed sampling points in the time domain. A two-stage frequency resolution subdivision method was also developed for the fast pulse compression of the sparse spectrum, which was shown to significantly improve the calculation speed. The simulation and experiment results demonstrate that the LPSA method can realize fast pulse compression with adequate high amplitude accuracy and frequency resolution. Compared to existing digital pulse compression technology, this method can significantly reduce the number of required calculations, especially for measurements of sparse signals.
abstract_unstemmed	Based on chirp transform and pulse compression technology, chirp transform spectrometers (CTSs) can be used to perform high-resolution and real-time spectrum measurements. Nowadays, they are widely applied for weather and astronomical observations. The surface acoustic wave (SAW) filter is a key device for pulse compression. The system performance is significantly affected by the dispersion characteristics match and the large insertion loss of the SAW filters. In this paper, a linear phase sampling and accumulating (LPSA) algorithm was developed to replace the matched filter for fast pulse compression. By selecting and accumulating the sampling points satisfying a specific periodic phase distribution, the intermediate frequency (IF) chirp signal carrying the information of the input signal could be detected and compressed. Spectrum measurements across the entire operational bandwidth could be performed by shifting the fixed sampling points in the time domain. A two-stage frequency resolution subdivision method was also developed for the fast pulse compression of the sparse spectrum, which was shown to significantly improve the calculation speed. The simulation and experiment results demonstrate that the LPSA method can realize fast pulse compression with adequate high amplitude accuracy and frequency resolution. Compared to existing digital pulse compression technology, this method can significantly reduce the number of required calculations, especially for measurements of sparse signals.
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title_short	Advanced Chirp Transform Spectrometer with Novel Digital Pulse Compression Method for Spectrum Detection
url	https://doi.org/10.3390/app11030960 https://doaj.org/article/f7673be412f445cc8391898766aaea3f https://www.mdpi.com/2076-3417/11/3/960 https://doaj.org/toc/2076-3417
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Advanced Chirp Transform Spectrometer with Novel Digital Pulse Compression Method for Spectrum Detection

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