The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 03, 2013
Filed:
Mar. 07, 2011
Lynn T. Antonelli, Cranston, RI (US);
Fletcher A. Blackmon, Forestdale, MA (US);
Lynn T. Antonelli, Cranston, RI (US);
Fletcher A. Blackmon, Forestdale, MA (US);
The United States of America as represented by the Secretary of the Navy, Washington, DC (US);
Abstract
A sensor system is provided comprising a Laser Doppler Vibrometer (LDV) that senses underwater sound via vibrations on an ice surface. In operation, a beam of the LDV measures a surface velocity and therefore an associated pressure signal from the ice surface due to an impinging underwater sound. The beam reflected from the surface carries the acoustic information back to the LDV. Using interferometry to derive the acoustic signal carried on the reflected beam; the LDV provides acoustic signal data in the form of a voltage signal. A computer processes the voltage signal as data that estimates a sound pressure level of the underwater source.