On-the-bottom Surveillance Buoy

Period of Performance: 01/01/1984 - 12/31/1984

$323K

Phase 2 SBIR

Recipient Firm

Defense Systems, Inc.
5121 Westbranch Dr
Mclean, VA 22102
Principal Investigator

Abstract

A SONOBUOY ON THE BOTTOM OF THE OCEAN CAN ACHIEVE LONG DETECTION RANGES BY USE OF THE RELIABLE ACOUSTIC PATH (RAP). BY PUTTING AN ACOUSTIC SIGNAL PROCESSOR IN THE BUOY TO DO SPECTRUM ANALYSIS AND CONTACT REPORT GENERATION, THE DATA TRANSMITTED TO THE SURVEILLANCE AIRCRAFT CAN BE REDUCED TO SHORT BURSTS ON A SCHEDULE THAT MEETS PATROL AIRCRAFT REVISIT REQUIREMENTS FOR INCREASED AIRCRAFT UTILIZATION AT LOWER COST. EMPLOYING ACOUSTIC COMMUNICATIONS FROM THE BOTTOM SENSOR TO A STANDARD PASSIVE BUOY DEPLOYED BY THE READOUT AIRCRAFT (AND SERVING AS A COMMUNICATIONS RELAY) CAN ELEIMINATE THE HIGH COST AND OFTEN UNRELIABLE ELECTROMECHANICAL LINK OF MOORED BUOYS. A BUOY COST SAVING IN EXCESS OF 80 PERCENT AND AN AIRCRAFT OPERATING COST REDUCTION BY A FACTOR OF 4 CAN BE ACHIEVED. DEFENSE SYSTEM INC (DSI) ON PHASE OF THIS SBIR PROGRAM DESIGNED AND BUILT THE CRITICAL ELEMENTS OF SUCH AN ON-THE-BOTTOM BUOY, COMPLETED WITH IN-BUOY SIGNAL PROCESSOR, ACOUSTIC COMMUNICATIONS LINK AND 200,000 FT. DEPTH-CAPABLE MECHANICAL STRUCTURE. DURING PHASE II, DSI WILL COMPLETE THE DEVELOPEMENT OF THE OTB BUOY, CONSTRUCT TWO UNITS AND DEPLOY THEM TO SEA TO DEMONSTRATE ITS DETECTION AND SURVEILLANCE CAPABILITIES. DSI SHALL SUPPLY THE NECESSARY TARGET SERVICES.