Global Positioning System (GPS) Jamming Situational Awareness for Naval Surface Fire Support (NSFS)

Award Information
Agency: Department of Defense
Branch: Navy
Contract: N00178-02-C-3009
Agency Tracking Number: N01-120-09
Amount: $100,000.00
Phase: Phase I
Program: SBIR
Awards Year: 2002
Solicitation Year: N/A
Solicitation Topic Code: N/A
Solicitation Number: N/A
Small Business Information
Toyon Research Corp.
Suite A, 75 Aero Camino, Goleta, CA, 93117
DUNS: 054672662
HUBZone Owned: N
Woman Owned: N
Socially and Economically Disadvantaged: N
Principal Investigator
 Kenan Ezal
 Senior Analyst
 (805) 968-6787
 kezal@toyon.com
Business Contact
 Michael VanBlaricum
Title: President
Phone: (805) 968-6787
Email: mvanblaricum@toyon.com
Research Institution
N/A
Abstract
"Toyon Research Corporation proposes to research and to develop a low-cost, jammer localization and characterization network, as well as the analysis tools necessary to ensure that the system provides valuable assistance in battlefield awareness andmission planning. The system will consist of a single control station and two or more remote stations that can be ground-based or UAV based. The primary focus of this effort will be to locate sources of GPS interference, such as jammers. In order toachieve the highest localization accuracy possible, while keeping costs low, the proposed system will be a hybrid implementation of a bearings-only measurement system and a time-difference-of-arrival (TDOA) system. Each remote station will synchronouslysample and store the monopulse direction-finding (DF) RF information and compute a bearing measurement. These bearing measurements, along with power measurements, will then be transmitted to the control station and be used to determine whether or not anyof the measurements are potentially from the same emitter. In addition, the control station will periodically request that the remote stations transmit the stored samples, which correspond to the previously submitted bearing measurements, for furtherprocessing. At this point, both TDOA and differential-Doppler (DD) techniques can be utilized to further improve the initial bearings-only emitter location estimates. The loss of GPS signal lock due to

* information listed above is at the time of submission.

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