CONTINUOUS TRANSMISSION SONAR

Award Information
Agency:
Department of Defense
Branch
Navy
Amount:
$52,235.00
Award Year:
1988
Program:
SBIR
Phase:
Phase I
Contract:
n/a
Award Id:
8709
Agency Tracking Number:
8709
Solicitation Year:
n/a
Solicitation Topic Code:
n/a
Solicitation Number:
n/a
Small Business Information
Po Box 23447, Rochester, NY, 14692
Hubzone Owned:
N
Minority Owned:
N
Woman Owned:
N
Duns:
n/a
Principal Investigator:
DAVID E NELSON
(716) 359-1000
Business Contact:
() -
Research Institute:
n/a
Abstract
A STUDY IS PROPOSED WHICH WILL IDENTIFY THE SPECIAL PROBLEMS ASSOCIATED WITH CONSTRUCTING A LONG RANGE, LOW FREQUENCY CONTINUOUS TRANSMISSION SONAR. THE BENEFITS OF THIS CONTINUOUS OPERATION ARE REDUCED SOURCE LEVEL FOR A GIVEN DETECTION RANGE, AND NEARLY CONTINUOUS TRACKING INFORMATION ON THE TARGET. THREE PRINCIPAL PROBLEM AREAS ARE IDENTIFIED: OBTAINING SUFFICIENT TIME-FREQUENCY SPACE IN THE OCEAN MEDIUM TO BE ABLE TO UTILIZE TRANSMISSION WITH ADEQUATE TIME-BANDWIDTH PRODUCT, THE DYNAMIC RANGE PROBLEM ASSOCIATED WITH THE RECEIVER INPUT AND LATER PROCESSING, AND THE LARGE QUANTITY OF DATA TO BE BEAMFORMED, CORRELATED, AND DETECTED. BECAUSE OF PREVIOUS WORK, HYDROACOUSTICS HAS EXAMINED A CLASS OF SIGNALS BASED UPON FM OR FSK WHICH ARE SEMI-ORTHOGONAL AND ADDRESS THE FIRST PROBLEM, AND HYDROACOUSTICS HAS STUDIED DIGITAL DYNAMIC RANGE REQUIREMENTS IN SONAR PROCESSING WHICH YIELD OPTIMISTIC RESULTS IN ADDRESSING THE SECOND PROBLEM. THE FINAL PROBLEM IS ONE OF DEFINING THE HARDWARE/SOFTWARE NECESSARY, AND INITIAL ESTIMATES ALSO A FAVORABLE TOWARD THE FEASIBILITY OF THE SYSTEM.

* information listed above is at the time of submission.

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