Improved Fusion of Sensor Array Data for Tactical RF Emitter Geolocation

Award Information
Agency: Department of Defense
Branch: Navy
Contract: N68335-13-C-0199
Agency Tracking Number: N11A-012-0510
Amount: $300,006.00
Phase: Phase II
Program: STTR
Awards Year: 2013
Solitcitation Year: 2011
Solitcitation Topic Code: N11A-T012
Solitcitation Number: 2011.A
Small Business Information
Scientific Systems Company, Inc
500 West Cummings Park - Ste 3000, Woburn, MA, -
Duns: 859244204
Hubzone Owned: N
Woman Owned: N
Socially and Economically Disadvantaged: Y
Principal Investigator
 Eric Wemhoff
 Senior Research Engineer
 (781) 933-5355
 eric.wemhoff@ssci.com
Business Contact
 Jay Miselis
Title: Corporate Controller
Phone: (781) 933-5355
Email: contracts@ssci.com
Research Institution
 Ohio State Univerity
 Inder J Gupta, Ph.
 ElectroScience Laboratory
1320 Kinnear Road
Columbus, OH, 43212-
 (614) 292-5951
 Nonprofit college or university
Abstract
The predominant method used in electronic support measure (ESM) systems to detect and geolocate noncooperative RF emitters employs arrays of antennas to estimate signal angle of arrival (AOA). There are several issues that preclude wide installation and use of these for emitter geolocation. One issue is accuracy. There are various error sources, including signal noise, multipath effects, and ambiguity when there are multiple transmitters. To combat these difficulties requires skilled operation, and that data be collected over long time periods and large geographic areas. Other issues with such systems are cost, payload size weight and power, and processing lag that precludes the timeliness needed in tactical operations. The main effort under this program is to reduce these burdens, with a system that can be installed more easily on a wide variety of platforms. Primarily, this is achieved through better ways of accounting for the specific errors arising in AOA estimation. The envisioned product is a self-complete geolocation system, including hardware and software, with low cost and SWAP to enable ubiquitous installation. It can automatically detect, geolocate, and inform users of the source of signals of interest, including GNSS interferers.

* information listed above is at the time of submission.

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