Low Elevation Nulling of Global Positioning System (GPS) Jammers for Ground-Based Platforms
Agency / Branch:
DOD / ARMY
A number of Army systems today depend on GPS for position and timing information. Reception of GPS signals on the battlefield is threatened by the effectiveness of ground-based GPS jamming devices, which are easy to construct and available from a number of sources worldwide. There is a need to improve the resistance of Army systems to ground-based jamming without incurring the cost or physical footprint of a fully adaptive GPS anti-jam antenna system. Building on the results of a successful Phase I effort, Toyon Research Corporation proposes to develop a GPS receive antenna that detects the presence of jamming and automatically switches its receive pattern between a nominal and a ground-nulling state. The antenna's ground-nulling mode will provide at least 25 dB of jamming attenuation to the GPS receiver, compared to an isotropic antenna. This attenuation level can be augmented with other ground-nulling techniques, including radio frequency (RF) absorber and choke rings. The antenna system will be designed to operate at both the L1 and L2 frequency bands, and will fit within a circular footprint measuring 1.5 inches in diameter and 5.5 inches tall.
Small Business Information at Submission:
TOYON RESEARCH CORP.
6800 Cortona Drive Goleta, CA 93117
Number of Employees: