Time reversal technique for gas leakage detection

• DOI: 10.1121/1.4916693
• Publication Date: 2015-04-28T00:30:20Z
• Authors: A. O. Maksimov; Yu. A. Polovinka
• Keywords: Leakage (economics); Subsea; Ambient noise level; Underwater Acoustics

The acoustic remote sensing of subsea gas leakage traditionally uses sonars as active sensors and hydrophones picking up the sound generated by a leak passive sensors. When leaks occur underwater, bubbles are produced emit at frequencies intimately related to their sizes. experimental implementation an time-reversal mirror (TRM) is now well established in underwater acoustics. In basic TRM experiment, probe source emits pulse that received on array sensors, time reversed, re-emitted. After reversal, resulting field focuses back position. this study, method for enhancing operation receiving system has been proposed using it regime TRM. Two factors, local character emission signal caused resonant nature bubble radiation birth, make particularly effective scattering with conjugate wave (CW). Analytical calculations performed CW single when formed birthing wail array, quality detection depends spatio-temporal distribution ambient noise.