Through-the-Sensor Sonar Performance Prediction and Optimization

Award Information
Agency:
Department of Defense
Amount:
$149,984.00
Program:
SBIR
Contract:
N00014-12-M-0032
Solitcitation Year:
2011
Solicitation Number:
2011.2
Branch:
Navy
Award Year:
2012
Phase:
Phase I
Agency Tracking Number:
N112-150-0786
Solicitation Topic Code:
N112-150
Small Business Information
Applied Physical Sciences Corp.
475 Bridge Street, Suite 100, Groton, CT, -
Hubzone Owned:
N
Woman Owned:
N
Socially and Economically Disadvantaged:
N
Duns:
112716357
Principal Investigator
 Kevin Cockrell
 Engineer
 (619) 795-6510
 kcockrell@aphysci.com
Business Contact
 David Horne
Title: Sr Vice President/CFO
Phone: (860) 448-3253
Email: dhorne@aphysci.com
Research Institution
 Stub
Abstract
Sonar performance predictions are often unreliable due to the lack of accurate information about the acoustic properties of the ocean around the globe. We propose to demonstrate an environmental estimation technique that uses reverberation from active sonar transmissions to infer environmental properties including the sound speed profile, the seafloor geoacoustic properties, and the geographically varying seafloor scattering strengths. By exploiting the linear dependence of the reverberation level on the seafloor scattering strength, an analytic method for estimating the scattering strengths can be used to greatly reduce the computational burden and increase the accuracy of the estimated environmental parameters. The result of this environmental estimation will be a fully three dimensional (3D) estimate of the environment, which can then be used to estimate the probability of detection and probability of false alarm versus range, depth, and azimuth relative to the sonar. The estimated environment will then be used to determine a set of sonar transmission parameters which optimize performance.

* information listed above is at the time of submission.

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