The Use of Complex-Modulated Signals at US Testing of Extended Complex-Structured Products

Vladimir K  Kachanov; Igor V  Sokolov; Alexey A  Sinitsyn; Maksim B  Fedorov; Michael A  Karavaev and Roman V  Kontsov

doi:10.17485/ijst/2015/v8i29/87137

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The Use of Complex-Modulated Signals at US Testing of Extended Complex-Structured Products

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Indian Journal of Science and Technology

DOI: 10.17485/ijst/2015/v8i29/87137

Year: 2015, Volume: 8, Issue: 29, Pages: 1-11

Original Article

The Use of Complex-Modulated Signals at US Testing of Extended Complex-Structured Products

Vladimir K. Kachanov^* , Igor V. Sokolov, Alexey A. Sinitsyn, Maksim B. Fedorov, Michael A. Karavaev and Roman V. Kontsov

National Research University, Moscow Power Engineering Institute, Electrical Engineering Faculty, Moscow, Russian Federation; [email protected]

This work is licensed under a Creative Commons Attribution 4.0 International License.

Abstract

The results of analysis of the possibilities to use Complex-Modulated radio pulses as probing signals in US flaw detection are given. It is shown that the application of Complex-Modulated echo signals in the receiving path optimal filters improves the basic parameters of the echo control method – sensitivity and resolution capability, and, in presence of white noise and not correlated interference, generally increases the reliability of the testing method.
Keywords: Complex-Modulated Signals, Electro acoustic Pickup, Frequency-Modulated Pulse, Optimal Filtering, PhaseShift Keyed Signal, US Flaw Detection