Velocity measurement by self‐tracking correlator
作者:
W. R. Tompkins,
R. Monti,
M. Intaglietta,
期刊:
Review of Scientific Instruments
(AIP Available online 1974)
卷期:
Volume 45,
issue 5
页码: 647-649
ISSN:0034-6748
年代: 1974
DOI:10.1063/1.1686705
出版商: AIP
数据来源: AIP
摘要:
A continuously variable time delay correlator was designed for the purpose of measuring velocity. The inverse transit time (velocity) between upstream and downstream detectors is continuously adjusted by a feedback loop which maintains constant the level of cross correlation at two equal intervals from the peak correlation. Variable delay is achieved by changing the clock frequency which controls a digital shift register delay line. The output of the system is linear and identical to that calculated with parallel logic cross correlation computers.
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