| Issue |
MATEC Web Conf.
Volume 336, 2021
2020 2nd International Conference on Computer Science Communication and Network Security (CSCNS2020)
|
|
|---|---|---|
| Article Number | 01006 | |
| Number of page(s) | 8 | |
| Section | Study of Advanced Materials and Performance Analysis | |
| DOI | https://doi.org/10.1051/matecconf/202133601006 | |
| Published online | 15 February 2021 | |
Research on improving measurement accuracy of acoustic transfer function of underwater vehicle
1 Systems Engineering Research Institute, Fengxian east road No.1, Haidian district, Beijing, China
2 Science and Technology on Underwater Acoustic Antagonizing Laboratory, Fengxian east road No.1, Haidian district, Beijing, China
* Corresponding author: lijiangqiao11@163.com
To address the problem that acoustic transfer functions with underwater platforms cannot be measured accurately, this paper presents a method based on phase compensation to improve the accuracy of acoustic transfer function measurements on underwater platforms. The time-domain impulse response signals with multiple cycles are first collected and intercepted, and then their phase differences are estimated using the least-squares method, and phase compensation is used to align the phases of all the signals, and then the impulse response signals are weighted and averaged over all the impulse response signals to cancel out the random noise. The water pool test proves that this method reduces the measurement random noise while obtaining a high-fidelity time domain transfer function, which effectively improves the signal-to-noise ratio of the measurement. The method adopts only one measurement signal, and without changing the measurement system, the random noise is cancelled out by the in-phase superposition of the multi-cycle impulse response signals to avoid the nonlinear distortion of the measurement results.
© The Authors, published by EDP Sciences, 2021
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