Compact Deep Vector Sensor Array
Navy SBIR FY2015.1


Sol No.: Navy SBIR FY2015.1
Topic No.: N151-011
Topic Title: Compact Deep Vector Sensor Array
Proposal No.: N151-011-0853
Firm: Systems & Technology Research
600 West Cummings Park
Suite 6500
Woburn, Massachusetts 01801-7222
Contact: Stephen Kogon
Phone: (781) 305-4031
Abstract: Systems & Technology Research (STR) together with our partners, Applied Physical Sciences (APS) and Portland State University (PSU), is pleased to provide this proposal to develop a deep ocean compact vector sensor array concept for deployment with an A-size sonobuoy. The sensor array will be made up of two arrays, a large hydrophone array and a compact vector sensor array, both with low receiver noise and high sensitivity, exploiting noise rejection in the deep ocean channel and enabling the sensing of signals via reliable acoustic path (RAP) propagation and pushing detection ranges out significantly over similar systems deployed in shallow ocean depths. Furthermore, the concept introduces the novel use of multi-mode passive sonar operating at reduced power and enabling long-life operations beyond 14 days. The initial detection mode utilizes the low-power hydrophone array that "turns on" or cues the higher power vector sensor array for target localization, tracking and false alarm mitigation. In addition to the deep ocean vector sensor array, STR and its partners will develop in-buoy signal processing to support detection and localization modes. The Phase I concept designs will be the basis for a vector sensor array prototype for Phase II.
Benefits: If the proposed development approach is successful, the US Navy will have a sonobuoy-based deep ocean vector array system, that when deployed in large numbers, will be capable of providing persistent surveillance against submarines over thousands of kilometers for multiple weeks. The technology may also have uses in the detection and tracking of marine wildlife.

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