LOW POWER HF SURFACE WAVE COMMUNICATIONS

Award Information
Agency:
Department of Defense
Branch:
Navy
Amount:
$199,030.00
Award Year:
1985
Program:
SBIR
Phase:
Phase II
Contract:
N/A
Agency Tracking Number:
1105
Solicitation Year:
N/A
Solicitation Topic Code:
N/A
Solicitation Number:
N/A
Small Business Information
Defense Systems Inc.
1521 West Branch Dr, Mclean, VA, 22102
Hubzone Owned:
N
Socially and Economically Disadvantaged:
N
Woman Owned:
N
Duns:
N/A
Principal Investigator
 Dr. Henry Mullaney
 (703) 883-1000
Business Contact
Phone: () -
Research Institution
N/A
Abstract
DATA RECOVERY FROM OPERATIONAL ASW BUOYS NOW REQUIRES THE PRESENCE OF A P-3 OR S-3 AIRCRAFT. SATELLITE RELAY CAPABILITY EXISTS, BUT THE AVERAGE BIT RATE IS TOO LOW, AND IT IS NOT REAL TIME. WE PROPOSE THE DEVELOPMENT OF A REAL TIME ONE WATT KILOBIT PER SECOND HF SUR FACE WAVE SYSTEM FOR BUOYS WITH A UNIQUE MODULATION FORMAT THAT WILL GIVE EFFECTIVE COMMUNICATION RANGES OF OVER 500 NAUTICAL MILES. THROUGH PROPER BUOY FIELD MANAGEMENT AND FREQUENCY CONTROL, A LARGE FIELD OF BUOYS CAN BE SERVICED BY A SINGLE SHIP OR SHORE BASED RECEIVER/CONTROLLER. THE BUOY COMMAND LINK IS A COVERT LINK WITH A UNIQUE NARROWBAND FREQUENCY HOPPED M-ARY FSK MODULATION THAT EMPLOYS HARDWARE ALREADY DEVELOPED BY DSI FOR AN IN BUOY ASW SIGNAL PROCESSOR.THROUGH QUIET CHANNEL SELECTION AND POWER CONTROL, REQUIRED TRANSMIT POWER CAN BE REDUCED BY TWO ORDERS OF MAGNITUDE. IN PHASE I, WE WILL DESIGN THIS NOVEL BUOY-SPECIFIC COMMUNICATION SYSTEM, CONSTRUCT A BREADBOARD VERSION OF THE BUOY TRANSCEIVER/MODEM AND CONDUCT LABORATORY TESTING. IN PHASE II, WE WILL REPACKAGE THE DESIGN INTO AN A-SIZE BUOY AND FIELD TEST IT AT SEA.

* information listed above is at the time of submission.

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