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:
Sep. 23, 2025
Filed:
Aug. 23, 2023
The United States of America As Represented BY the Secretary of the Navy, Newport, RI (US);
Steven E Crocker, Bristol, RI (US);
Ronald R Smalley, Jr., North Kingstown, RI (US);
Daniel R Nashold, Mattapoisett, MA (US);
Mark R Grden, South Kingstown, RI (US);
Ryan Amaral, Fall River, MA (US);
Brian W Duarte, Warwick, RI (US);
William H Slater, New Bedford, MA (US);
Michael A Bergeron, Coventry, RI (US);
Jason R Bernier, Exeter, RI (US);
Amarilis Blankenship, Saunderstown, RI (US);
Joseph A Carreiro, New Bedford, MA (US);
Ernest J Briggs, Exeter, RI (US);
Abstract
A method is provided to measure the complex sensitivity of hydrophone data channels across a range of frequencies by using a water-filled tank with proximate boundaries. A hydrophone array and reference hydrophone are helically affixed to a test fixture resting on a rotation platform. When the test fixture is submerged in the tank; the platform rotates about a contour of the platform in intervals for a predetermined time interval before indexing to the next angle. Signals transmitted by an acoustic projector in the tank are received on the hydrophones of the line array and the calibrated reference hydrophone. Electrical signals from the reference hydrophone are transmitted over an electrical cable and received by the acoustic data processor for use in calibrating the hydrophone line array. Electrical signals from the hydrophones of the hydrophone line array are also transmitted to the data processor.