N00014-17-1-2501 Expansion: Holographic array for determining structural acoustic properties Expansion
Abstract
N00014-17-1-2501 Expansion: Determining the scattered acoustic pressure field from objects undergoing vibrations and/or incident fields is of great interest to the Navy. Recently we have developed a new metrology that is poised to recast and reshape target scattering measurements in acoustics. To facilitate this development the proposed system will enable collection of acoustic data scattered from any arbitrarily shaped resonant object. The principal purpose is to enable the in-depth exploration of basic research questions in acoustic scattering and radiation of submerged objects. The system proposed is a unified set of equipment that provides the nec"essary information for constructing the three matrices,which are then used to determine the acoustic scattering signature of the ar"bitrary object in any exterior medium.Standard experimental methods require the acoustic signature be acquired when the object is p"laced in the medium of interest, whereas this method allows the acoustic signature to be acquired in any medium and in a non-anechoi""c chamber. Existing multimillion dollar systems are much larger, costlier facilities to construct, maintain and operate and further," only provide water in situ results not easily translatable to determining the scattering properties of an object in embedded in arbitrary media such as a sediment. The in-air measurement using the DURIP equipment proposed is based on the rigorous theory and pilot experiment for monostatic or bistatic scattering already accomplished in our previous ONR research.
Document Details
- Document Type
- DoD Grant Award
- Publication Date
- Nov 03, 2017
- Source ID
- N000141713017
Entities
People
- W. A. Kuperman
Organizations
- Office of Naval Research
- United States Navy
- University of California, San Diego