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A Real-Time Signal Processing System for Correlation and Spectrum Analysis
https://jaxa.repo.nii.ac.jp/records/34423
https://jaxa.repo.nii.ac.jp/records/34423971d1ab4-ec74-43b8-a094-f4dd2ad81d48
| 名前 / ファイル | ライセンス | アクション |
|---|---|---|
SA2400738.pdf (1.3 MB)
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| Item type | 紀要論文 / Departmental Bulletin Paper(1) | |||||||
|---|---|---|---|---|---|---|---|---|
| 公開日 | 2015-03-26 | |||||||
| タイトル | ||||||||
| タイトル | A Real-Time Signal Processing System for Correlation and Spectrum Analysis | |||||||
| 言語 | en | |||||||
| 言語 | ||||||||
| 言語 | eng | |||||||
| 資源タイプ | ||||||||
| 資源タイプ識別子 | http://purl.org/coar/resource_type/c_6501 | |||||||
| 資源タイプ | departmental bulletin paper | |||||||
| 著者 |
ISHII, Yasushi
× ISHII, Yasushi
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| 出版者 | ||||||||
| 出版者 | 東京大学宇宙航空研究所 | |||||||
| 出版者（英） | ||||||||
| 出版者 | Institute of Space and Aeronautical Science,University of Tokyo | |||||||
| 書誌情報 |
en : ISAS report/Institute of Space and Aeronautical Science,University of Tokyo 巻 35, 号 2, p. 21-32, 発行日 1970-02 |
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| 抄録（英） | ||||||||
| 内容記述タイプ | Other | |||||||
| 内容記述 | This paper reports a digital correlator operating in real-time and a spectrum analyzer which converts the output of the correlator into the power spectrum. The correlator employs three magnetostrictive delay lines as its main storage units and computes the values of auto-or cross-correlation function of the analog input signals at one hundred equally spaced points on the time delay axis simultaneously. The computed results are DA converted and displayed on a cathode-ray tube in the form of a bargraph. The measured correlation function is always up-to-date and automatically follows the change of the input signals. With a special method of sampling of the input signals, the increment of the time delay can be made as small as 200μs, which enable us, for instance, to make a real-time analysis of spoken voices. The spectrum analyzer receives the digital output of the correlator and multiplies it by an internally generated sinusoidal function. This Fourier transformation is performed at one hundred different freqnencies and the final output is displayed on a cathode-ray tube at every 200ms, giving the entire form of the power spectrum within a specified frequency range. All the computations are performed digitally except the modification of output by the hamming window. Some applications of this signal processing system are also included in this paper. | |||||||
| ISSN | ||||||||
| 収録物識別子タイプ | ISSN | |||||||
| 収録物識別子 | 0372-1418 | |||||||
| 書誌レコードID | ||||||||
| 収録物識別子タイプ | NCID | |||||||
| 収録物識別子 | AA00675986 | |||||||
| 資料番号 | ||||||||
| 内容記述タイプ | Other | |||||||
| 内容記述 | 資料番号: SA2400738000 | |||||||
