ADVANCED UNDERSEA TACTICAL COMMUNICATIONS TECHNIQUES

Award Information
Agency:
Department of Defense
Branch
Defense Advanced Research Projects Agency
Amount:
$226,196.00
Award Year:
1984
Program:
SBIR
Phase:
Phase II
Contract:
n/a
Agency Tracking Number:
272
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:
() -
Business Contact:
GEORGE S. SEBESTYEN
(703) 883-1000
Research Institution:
n/a
Abstract
THERE IS AN INCREASING NEED FOR LONG RANGE (200KM) APPROXIMATELY 10 BPS RATE ACOUSTIC COMMUNICATION AT LOW BIT ERROR RATES IN THE COMMAND AND CONTROL OF ACOUSTIC SURVEILLANCE SYSTEM ELEMENTS, UNDERWATER VEHICLES AND SENSORS. SIMULATED FISH NOISE, CODED TONE AND MULTITONE CW SIGNALS HAVE BEEN USED WITH VARYING SUCCESS. ONLY THE M-ARY, MULTITONE, LONG BAND LOW FREQUENCY WAVEFORMS ARE PRACTICAL FOR LONG RANGE COMMUNICATIONS. HOWEVER, THE DEPENDENCE OF AMBIENT NOISE VS FREQUENCY, PROPAGATION LOSS VS RANGE, TRANSDUCER EFFICIENCY AND SIZE VS FREQUENCY AND TOTAL BANDWIDTH OCCUPIED MUST BE CONSIDERED IN THE ACOUSTIC LINK DESIGN. PHASE 1 OF THIS RESEARCH WILL PERFORM AND DOCUMENT THE TRADEOFFS THAT LEAD TO PRACTICAL COMMUNICATIONSSYSTEMS DESIGNS AND WILL PRODUCE A HANDBOOK OF MONOGRAPHS THAT WILL PERMIT THE USER TO SELECT THE SYSTEM VARIABLES THAT BEST SUIT THE APPLICATION AT HAND. THE RESULTS OF THISANALYSIS ARE THEN GOING TO BE APPLIED TO THE COMMAND AND CONTROL OF DISTRIBUTED SENSORS IN HOSTILE AREAS. PHASE 1 EFFORT WOULD PROVIDE THE FIRST DOCUMENTED ANALYSIS OF TRANSMITTER, POWER, AND VOLUME REQUIREMENTS NEEDED FOR LONG LIFE REMOTE SENSORS. PHASE 2 WILL FABRICATE A PROTOTYPE TO BE DEMONSTRATED AT SEA.

* information listed above is at the time of submission.

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