The question of selecting the pitch of an ultrasonic antenna arrays in order to obtain the maximal signalto-structural noise ratio is considered. The ordinary mode of a linear antenna array, in which one of its elements radiates a signal and the other receives a signal, as well as the synthetic aperture mode, and the SAFT-C mode, in which each element in turn radiates a signal and the others receive the signal, are described. It is shown that the SAFT-C mode produces a four-fold increase in the signal-to-structural noise ratio from that achieved in the other modes.
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Translated from Izmeritel’naya Tekhnika, No. 7, pp. 61–66, July, 2016.
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Ali, Z.S.S., Kartashev, V.G., Shalimova, E.V. et al. Influence of Pitch of Ultrasonic Antenna Array on Efficiency of Extraction of a Signal from Structural Noise in Flaw Detection. Meas Tech 59, 773–780 (2016). https://doi.org/10.1007/s11018-016-1045-7
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DOI: https://doi.org/10.1007/s11018-016-1045-7