Acoustical Imaging pp 729-735 | Cite as
The Image Reconstruction of Underwater Noise Sources by Using the Fresnel Integral
Abstract
The image reconstruction has been proven to be a useful tool for studying underwater noise sources. From the sound images we can get characterizations such as exact location and intensity distribution of every source. In this paper we make the sound field transformation from measurement plane to sources plane by using Fresnel integral and get the mutual intensity of sound waves in sources plane, and then obtain the radiation sound images. From this principle, the paper gives out two experiments for fixed sources and moving sources in the water, respectively, and shows the images of these sources. It is clear in the images that where is most strong and where is weakest in mutual intensity on sources plane. Therefore, this method is applicable to studying the location or mapping of radiation sound sources underwater.
Keywords
Sound Source Measurement Plane Moving Ship Source Plane Radiation SoundPreview
Unable to display preview. Download preview PDF.
References
- 1.A. K. Ghatak and K. Thyagarajan, “Contemporary Optics”, Plenum Press, New York (1978).CrossRefGoogle Scholar
- 2.S. Ueha, Imaging of Acoustic Radiation Sources with Acoustical Holography, Optica ACTA ,Vol. 23, No. 2, pp107–104, (1976).ADSCrossRefGoogle Scholar
- 3.W. A. Veronesi and J. D. Maynard, Digital Holohraphic Reconstruction of sources with arbitrarily shaped surfaces, J. Acoust. Soc. Am. , Vol. 85, No. 2, February (1989).Google Scholar