| Issue |
MATEC Web Conf.
Volume 158, 2018
VI International Forum for Young Scientists “Space Engineering 2018”
|
|
|---|---|---|
| Article Number | 01020 | |
| Number of page(s) | 5 | |
| DOI | https://doi.org/10.1051/matecconf/201815801020 | |
| Published online | 19 March 2018 | |
Inaccuracy of acoustic measurements in dual-frequence method of sounding
Tomsk Polytechnic University, 634050 Tomsk, Russia
* Corresponding author: mariyakostina91@mail.ru
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.
© The Authors, published by EDP Sciences, 2018
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (http://creativecommons.org/licenses/by/4.0/).
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