Acta Metrologica Sinica  2020, Vol. 41 Issue (1): 85-89    DOI: 10.3969/j.issn.1000-1158.2020.01.16
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Research on New Method of Time Base Error Compensation for Broadband Sampling Oscilloscope
ZHU Jiang-miao1,WANG Shi-biao1,ZHAO Ke-jia2,QIAO Meng-yuan1
1.Information Department, Beijing University of Technology, Beijing 100124, China
2.National Institute of Metrology, Beijing 100029, China
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Abstract  Time-based errors seriously affect the accurate measurement of broadband sampling oscilloscopes, but it is extremely difficult to accurately estimate and compensate for time-base errors. For the time-base error of broadband sampling oscilloscope (including time-base distortion and jitter-induced error), the orthogonal time-regression algorithm is used to estimate the time-base error of oscilloscope for the first time. Compared with the multi-phase and multi-frequency least squares method,only to uses a set of approximately orthogonal sinusoidal signals to effectively estimate the time base error of the broadband sampling oscilloscope, and realizes the time base compensation of the measured signals. A time base error of less than 0.3ps is obtained, which significantly improves the measurement accuracy of the broadband sampling oscilloscope.
Key wordsmetrology      time base error      broadband sampling oscilloscope      orthogonal distance regression      synchronous measurement     
Received: 18 February 2019      Published: 19 December 2019
PACS:  TB973  
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ZHU Jiang-miao
WANG Shi-biao
ZHAO Ke-jia
QIAO Meng-yuan
Cite this article:   
ZHU Jiang-miao,WANG Shi-biao,ZHAO Ke-jia, et al. Research on New Method of Time Base Error Compensation for Broadband Sampling Oscilloscope[J]. Acta Metrologica Sinica, 2020, 41(1): 85-89.
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http://jlxb.china-csm.org:81/Jwk_jlxb/EN/10.3969/j.issn.1000-1158.2020.01.16     OR     http://jlxb.china-csm.org:81/Jwk_jlxb/EN/Y2020/V41/I1/85
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