| Sol No.: |
Navy SBIR FY2010.1 |
| Topic No.: |
N101-068 |
| Topic Title: |
Technologies for Reduced Source Level Sonar Systems |
| Proposal No.: |
N101-068-0640 |
| Firm: |
Advanced Acoustic Concepts Incorporated
425 Oser Avenue
Hauppauge, New York 11788 |
| Contact: |
Dennis Kershner |
| Phone: |
(410) 872-0024 |
| Web Site: |
www.aactech.com |
| Abstract: |
Advanced Acoustic Concepts (AAC) will develop a spread spectrum waveform for use with the Continuous Active Sonar (CAS). CAS uses the AN/SQS-53C as the sonar source operating at 100% duty-cycle. It then uses a Multi-Function Towed Array (MFTA) as the receiver. This is an ideal application for a spread spectrum waveform as the largest reduction in transmit power is achieved using the highest pulse compression which in turn is achieve through use of very high duty cycle waveforms. AAC will provide analysis of system performance in reverberation, acoustic intercept vulnerability, and processing load estimates. |
| Benefits: |
The proposed modification to the CAS waveform should allow it to operate in ASW and TDCL modes simultaneously. The thumb-tack ambiguity function resulting from the waveform simultaneously provides very good range resolution for separating slow moving targets from bottom/surface reverberation while at the same time providing very good Doppler sidelobes needed to separate torpedoes from reverberation. This technique could also be applied to a towed active source. Further, the demonstrated reduction in peak signal power without loss of performance should enable development of a smaller active source that could be mounted on the bow of a High Value Units (HVU). |