Alternative Solution for Non Uniform Sensitivity of Experimental Equipment Case Study: Ambient Noise Measurement of Underwater Acoustic Channel
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AcousticAbstract
In this paper, will be presented the normalization process of some measuring instruments whose have different sensitivity. This step is performed as the initial preparation before starting experimental measurements in the field. The process of normalization was carried out on the device sound audio processing, and hydrophones as front end sensors. Normalization is conducted in frequency domain, and shows that the comparison of sensitivity was fluctuate at different frequencies. Overall, have obtained results that sensitivity ration among hydrophones are:Â H-123 has a sensitivity ratio of 0.85 compare to sensitivity of H-2, and has a sensitivity ratio of 1.5 compared to the H-ref. While H-2 has sensitivity ratio of 2.3 compare to H-ref. From these results, we hope to contribute in the research topics based on measurements. So that the problems in the sensitivity of measuring devices that are not uniform can be solved.
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References
P. C. Etter, “Advanced Applications for Underwater Acoustic Modelingâ€, Hindawi Publishing Corporation, Advances in Acoustics and Vibration, Volume 2012, Article ID 214839.
Poikonen, and S. Madekivi, “Recent Hydro Acoustic Measurement and Studies in the Gulf of Finlandâ€, Proceedings of the International Conference “Underwater Acoustic Measurements: Technologies &Resultsâ€, Heraklion, Crete, Greece, 28th June - 1st, July 2005.
Poikonen, and S. Madekivi, “Recent Hydro Acoustic Measurement and Studies in the Gulf of Finlandâ€, Proceedings of the International Conference “Underwater Acoustic Measurements: Technologies &Resultsâ€, Heraklion, Crete, Greece, 28th June - 1st, July 2005.
M. Ashokana, G. Latha, and R. Ramesh, “Analysis of Shallow Water Ambient Noise Due to Rain and Derivation Rain Parametersâ€, Elsevier, Applied Acoustic, Vol. 88 (2015), pp: 114–122
S. Najeem, M.C. Sanjana, G. Latha, and P.E.Durai, “Wind Induced Ambient Noise Modeling and Comparison with Field Measurements in Arabian Seaâ€, Elsevier, Applied Acoustics, Vol. 89 (2015), pp: 101–106.
A.E. Isaev, Chen Yi, A.N. Mateev, and Ping Zihong, “COONET.AUV.W-S1 supplementary comparison of free-field hydrophone calibration in the Frequency range of 250 Hz to 8 kHzâ€, Metrologia, Vol. 52, 2015. 09001 doi:10.1088/0026-1394/52/1A/09001.
D. T. Dakin, J. Bosma, J. Dorocicz, and N. Bailly, “Calibrating Low Frequency Digital Hydrophonesâ€, International Conference and Exhibition on Underwater Acoustics (UA2013), Corfu, Greece, 23-26 June, 2013.
V. Wilkens and C. Koch, “Improvement of Hydrophone Measurements on Diagnostic Ultrasound Machines using Broadband Complex-Valued Calibration Dataâ€, Institute of Physics Publishing, Journal of Physics: Conference Series 1 (2004), pp. 50–55, doi:10.1088/1742-6596/1/1/012.
S.P Robinson and P.D Theobald, “validation of Primary Hydrophone Calibrations by Inter-Laboratory Comparisons and by Independent calibration Methodsâ€, Acoustic’08, Paris, June 29-July 4, 2008.
G.B.N. Robb, S.P. Robinson, P.D. Theobald, et. all, “Absolute Calibration of Hydrophones Immersed in Sandy Sedimentâ€, Journal of acoustic Society of America, Vol. 125, No. 5, May 2009, Pages: 2918 –2927. DOI: 10.1121/1.3106530.
Isaev, and A. Shchelkunov, “Low Frequency Calibration with Using Tensometer Pressure Sensorâ€, Acoustic’08, Paris, France, June 29 – July 4.
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