Echography of in-tube sealing units: Simulation and experiment

Seleznev, A. I.; Soldatov, A. I.; Fiks, I. I.; Kroening, X. M.

doi:10.1134/s1061830912040092

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Response Of the Comparator In The Different Periods When Pro1

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Cited by 6 publications

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“…In the first time intervals of signal growing, at the moment of signal appearance in the receiver its level is comparable with the level of noises [25][26][27]. That is why big errors are possible when setting the triggering value of voltage on the level of the first period of the received signal.…”

Section: Response Of the Comparator In The Different Periods When Promentioning

confidence: 78%

Inaccuracy of acoustic measurements in dual-frequence method of sounding

2018

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Abstract. The article describes the new method of defining time coordinate of the moment when echo-impulse comes. The principle of the method consists in consecutive sounding of the (head) well with the signals of different frequencies and analysing the received reflected signals. The article shows the graphs with dependence of measurement inaccuracy when the operating threshold of the comparator for different ratios of frequencies changes. If the comparator works out in different (in order) periods of the received signals then measurement inaccuracy will be 1-2 periods of the carrier frequency.

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Section: Response Of the Comparator In The Different Periods When Promentioning

confidence: 78%