一种调制度测量仪的数字化精确评价与溯源方法

doi:10.3969/j.issn.1000-1158.2021.07.15

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摘要提出一种调制度测量仪校准方法,对低频载波情况,直接使用数字示波器进行采集测量,用软件无线电方式解调分析,获得调制域参数。对高频载波情况,首先用下变频技术将其转换成低频载波情况,然后进行测量、解调分析,并给出了详细过程。以此方式,将调制度测量仪的量值溯源到数字示波器的采样速率和幅度上,从而达到校准调制度测量仪的目的。在一种具体型号的仪器上所做的校准验证实验,验证了所述方法的有效性与可行性。

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	梁志国
	何昭
	缪京元
	郭晓涛
	张亦弛

关键词 ：计量学, 调制度测量仪, 解调, AM, FM, PM, 评价, 校准

Abstract：For the modulation measuring instrument, a calibration method is proposed, which includes directly using a digital oscilloscope for signal acquisition and measurement in the case of low-frequency carrier, and performing software demodulation analysis to obtain the modulation domain parameters. For the high-frequency carrier case, it is first converted to a low-frequency carrier case using down-conversion frequency technology, and then measured and analyzed. All the courses are discussed in details. In this way, the measurement value of the modulation domain instrument can be traced to the sampling rate and amplitude of the digital oscilloscopes, so as to achieve the purpose of calibrating the modulation meters. Calibration verification experiments performed on a specific type of instrument validate the effectiveness and feasibility of the method described herein.

Key words： metrology modulation meters demodulation AM FM PM evaluation calibration

收稿日期: 2020-01-11 发布日期: 2021-07-15

PACS:

TB973

基金资助:国家重点研发计划(2017YFF0206202)

作者简介: 梁志国(1962-),男,黑龙江巴彦人,博士,北京长城计量测试技术研究所研究员,博士研究生导师,主要研究方向为数字化测量与校准,模式识别,动态校准,精确测量。Email:Lzg304@sina.com

引用本文:

梁志国,何昭,缪京元,郭晓涛,张亦弛. 一种调制度测量仪的数字化精确评价与溯源方法[J]. 计量学报, 2021, 42(7): 930-936.
LIANG Zhi-guo,HE Zhao,MIAO Jing-yuan,GUO Xiao-tao,ZHANG Yi-chi. A Novel Digitizing Evaluation and Traceability Method of Modulation Meters. Acta Metrologica Sinica, 2021, 42(7): 930-936.

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http://jlxb.china-csm.org:81/Jwk_jlxb/CN/10.3969/j.issn.1000-1158.2021.07.15 或 http://jlxb.china-csm.org:81/Jwk_jlxb/CN/Y2021/V42/I7/930

［1］JJF 1111-2003 调制度测量仪校准规范［S］. 北京: 中国计量出版社, 2004.
［2］Test & Measurement Catalog［Z］. Agilent company, 2001.
［3］梁志国, 孙璟宇. 调幅信号的数字化解调［J］. 测控技术, 2004, 23 (10): 17-20.
Liang Z G, Sun J Y. A Precise Digitizing Demodulation Method of the AM Signals［J］. Measurement & Control Technology, 2004, 23 (10): 17-20.
［4］梁志国, 朱济杰, 孟晓风. 四参数正弦曲线拟合的一种收敛算法［J］. 仪器仪表学报, 2006, 27(11): 1513-1519.
Liang Z G, Zhu J J, Meng X X. Convergence algorithm of four-parameter sine wave curve-fit［J］. Chinese Journal of Scientific Instrument, 2006, 27 (11): 1513-1519.
［5］梁志国, 朱济杰, 孙璟宇. 正弦信号总失真度的一种精确评价方法［J］. 计量学报, 2003, 24(2): 144-148.
Liang Z G, Zhu J J, Sun J Y. A Precisely Evaluation Method of the Distortion of Sine Wave Signal Generators［J］. Acta Metrologica Sinica, 2003, 24(2): 144-148.
［6］梁志国, 孙璟宇. 调频信号的数字化解调［J］. 测试技术学报, 2005, 19(2): 190-194.
Liang Z G, Sun J Y. A Precise Digitizing Demodulation Method of the FM Signal［J］. Journal of Test And Measurement Technology, 2005, 19(2): 190-194.
［7］梁志国, 孙璟宇. 调相信号的数字化解调［J］. 测试技术学报, 2007, 21(1): 44-48.
Liang Z G, Sun J Y. A Digitizing Demodulation Method of PM Signal［J］. Journal of Test And Measurement Technology, 2007, 21 (1): 44-48.
［8］梁志国, 朱济杰. 调相信号的一种数字化精确解调方法［J］. 计量学报, 2003, 24(4): 325-329.
Liang Z G, Zhu J J. A Precise Digitizing Demodulation Method for the PM Signal［J］. Acta Metrologyca Sinica, 2003, 24(4): 325-329.
［9］梁志国, 孟晓风. 残周期正弦波形的四参数拟合［J］. 计量学报, 2009, 30(3): 245-249.
Liang Z G, Meng X F. A Curve-fit Arithmetic of Four-parameter Sine Wave for Partial Period［J］. Acta metrologica sinica, 2009, 30(3): 245-249.
［10］Deyst J P, Soulders T M, Solomon O M. Bounds on Least-Squares Four-Parameter Sine-Fit Errors Due to Harmonic Distortion and Noise ［J］. IEEE Transactions on Instrumentation & Measurement, 1995, 44(3): 637-642.