Accession Number : ADD014371

Title :   Multi-Channel Acoustic Simulator.

Descriptive Note : Patent Application, Filed 19 Jun 89,

Corporate Author : DEPARTMENT OF THE NAVY WASHINGTON DC

Personal Author(s) : Dilemmo, Marc C

Report Date : 19 Jun 1989

Pagination or Media Count : 29

Abstract : This invention relates to acoustic simulators for simulating signals provided by hydrophones in multi-transducer sonar sounding systems for laboratory or dockside testing of multi-transducer sonar sounding systems. In particular, the invention relates to a system which electrically replaces the hydrophone of a multi-transducer sonar array sounding system. At present it is very difficult to provide the acoustic signals generated by a large array of hydrophones which accurately represent the ocean bottom and, in real time, apply the signals to an array sounding system for testing the array sounding system. For example, the Sonar Array Sounding System (SASS) currently in operation on board T-AGS 22, 34, 38, and 39 Oceanographic Survey Vessels includes one hundred forty four hydrophones in its receiving array. Thus in order to simulate hydrophone output and test the SASS, one hundred forty four signals must be applied to the SASS during each simulator update. These updates occur on the order of every 2.5 msec and take place for a duration of three to five seconds. Providing this much data to the SASS is a complex operation requiring a very large bandwidth. Keywords: Patent applications. (KR)

Descriptors :   *ACOUSTIC SIGNALS, *SIMULATORS, *MULTICHANNEL, *PATENT APPLICATIONS, *SIGNAL PROCESSING, *SONAR ARRAYS, ACOUSTIC ARRAYS, ACOUSTICS, BANDWIDTH, DOCKS, HYDROPHONES, OCEAN BOTTOM, OUTPUT, REAL TIME, SIGNALS, SONAR, SOUNDING, TEST AND EVALUATION, TRANSDUCERS

Subject Categories : Acoustic Detection and Detectors

Distribution Statement : APPROVED FOR PUBLIC RELEASE