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Geomagnetic Reference Sensor System (GRSS) for Air Anti-Submarine Warfare (ASW)
Navy SBIR FY2008.1
| Sol No.: |
Navy SBIR FY2008.1 |
| Topic No.: |
N08-009 |
| Topic Title: |
Geomagnetic Reference Sensor System (GRSS) for Air Anti-Submarine Warfare (ASW) |
| Proposal No.: |
N081-009-0998 |
| Firm: |
Polatomic, Inc.
1810 N. Glenville Dr.
Suite 116
Richardson, Texas 75081-1954 |
| Contact: |
Douglas McGregor |
| Phone: |
(972) 690-0099 |
| Web Site: |
polatomic.com |
| Abstract: |
This SBIR Phase I proposal describes the development of a conceptual design for the Geomagnetic Reference Sensor System (GRSS). Polatomic and USSI have joined their respective magnetic sensor and buoy building expertise and experience to develop an affordable sea deployable geomagnetic reference buoy to reduce the geomagnetic noise on airborne MAD systems. The sensor is a miniature high-sensitivity scalar laser magnetometer derived from the ONR sponsored Miniature Broadband Laser Magnetometer (MBLM) Phase II Program. It is designed to sell for less than $3000.00 in volume production. The MBLM offers a state-of-the-art capability for measuring scalar geomagnetic fields with sensitivity better than 1.0 pT/?aHz from 0.01 Hz to 30 Hz. The MBLM design is based on four innovations: 1) Optically-driven Spin Precession (OSP) locked-oscillator He4 mode for the observation of the magnetic signals, 2) miniature helium-4 cells, 3) fiber-coupled laser pump source for optically pumping helium isotopes, and 4) miniature omni-directional sensor having full sensitivity on all headings. In Phase I, the anticipated noise sources for the geomagnetic buoy will be characterized and ancillary sensors and suspension systems will be added to the buoy to allow mitigation of motion and ocean wave noise. |
| Benefits: |
The GRSS sensor will have a variety of commercial and military applications for measurement of the magnetic fields in both undersea and land surface arrays. Possible applications include use as an ELF detector and/or communications receiver, undersea arrays and shoreline perimeter arrays. The high sensitivity of the GRSS instrument over a broad detection frequency interval makes possible high-performance magnetic arrays to be used at the Earthfs surface for detection and tracking of magnetic targets. The laser magnetometer technology is currently under development by the US Navy for use in ASW aircraft including fixed-wing, rotor-wing and UAVs. The GRSS instrument is a high-sensitivity scalar magnetometer that exhibits outstanding accuracy and a high-frequency detection capability, ideal characteristics for an instrument for magnetic observatories. GRSS arrays will be well suited for commercial security and Urban Warfare surveillance applications. |
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