捷变正弦信号源波形建立时间的精确测量

doi:10.3969/j.issn.1000-1158.2020.09.13

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Abstract Aiming at the problems in accurate measurement of settling time of sinusoidal generator in state changing, switch on, and overloading recovery, a method based on local area four-parameter sine wave curve-fitting is presented. Then, the four fitting parameters are used to the whole area of sampling wave, and the residual error wave between the fitting curve and the sampling wave is gotten. It takes the convergence courses of residual error in settling of sinusoidal. By using this residual error curve, and the condition criterion of the settling time of ourselves, both the beginning time point and the stopping time point are got, finally, the settling time of sinusoidal is calculated. In experiments of two different conditions, both the validity and the feasibility of the measurement method are proved. The method can also be used in settling time measurement of all of the pulse frequency modulation, pulse amplitude modulation, pulse phase modulation, and other digital modulation signal generators.

Key words： metrology sinusoidal hopping frequency frequency agility settling time calibration evaluation curve-fit

Received: 12 October 2019 Published: 28 August 2020

PACS:

TB973

Corresponding Authors: Zhi-Guo LIANG E-mail: lzg304@sina.com

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	LIANG Zhi-guo
	HE Zhao
	LIU Yuan
	ZHANG Yi-chi
	WU Ya-hui

Cite this article:

LIANG Zhi-guo,HE Zhao,LIU Yuan, et al. The Precise Measurement Method for Settling Time of Hopping Sine Wave Based on Four-parameter Sinusoidal Curve-fit[J]. Acta Metrologica Sinica, 2020, 41(9): 1115-1121.

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http://jlxb.china-csm.org:81/Jwk_jlxb/EN/10.3969/j.issn.1000-1158.2020.09.13 OR http://jlxb.china-csm.org:81/Jwk_jlxb/EN/Y2020/V41/I9/1115

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