Parameter sensitivity in nonlinear and dissipative time-reversed acoustics
| Document type: | Conference Papers |
|---|---|
| Peer reviewed: | Yes |
| Full text: | |
| Author(s): | Claes Hedberg |
| Title: | Parameter sensitivity in nonlinear and dissipative time-reversed acoustics |
| Translated title: | Parameterkänslighet i ickelinjär och dissipativ tidsomvänd akustik |
| Conference name: | 16th Int. Congress on Acoustics and 135th Meeting of Acoust. Soc. of Am. |
| Year: | 1998 |
| Pagination: | 543-544 |
| ISBN: | 1-56396-815-0 |
| Publisher: | Acoust. Soc. of Am. |
| City: | Seattle, WA |
| Organization: | Blekinge Institute of Technology |
| Department: | Dept. of Mechanical Engineering (Institutionen för maskinteknik) Dept. of Mechanical Engineering S-371 79 Karlskrona +46 455 780 00 http://www.hk-r.se/ima/en_index.html |
| Authors e-mail: | claes.hedberg@hk-r.se |
| Language: | English |
| Abstract: | Time-reversed nonlinear acoustics has shown that a propagated signal retains information about the original signal after shock formation and even after merging of shocks. This information is dependent on the accuracy of the measured or calculated data . Presented here is a more detailed analysis of the estimation of dimensionless and real parameters in the problem - the original amplitude, the distance traveled and the dissipation over non- linearity ratio. It is shown that the methods are fairly insensitive to noise. |
| Summary in Swedish: | Tidsomvänd ickelinjär akustik har visat att a signal kvarhåller information om dess begynnelsetillstånd till och med efter sammangående av stötarna. Här visas hur parametrarna i problemet kan uppskattas: begynnelseamplituden, fortplantningsavståndet och förhållandet mellan dämpning och ickelinjaritet. |
| Subject: | Mechanical Engineering\Structural Dynamics Signal Processing\Detection and Classification Signal Processing\Hydro-Acoustics |
| Keywords: | timereversal, backpropagation, acoustics, nonlinear |
