AFRL Provides World-Class Virtual Flight Support

Applications

• Military and Commercial Significance:
• Simultaneous Beamsteering and Nulling action.
• ­ Maximizes signal to interference plus noise ratio for highest anti-jam performance.
• ­ Effective against broadband and narrowband jamming
• Blind Adaptive Anti-Jam Technique
• ­ Does not require special antenna arrays or antenna calibration
• ­ Does not require an INS input
• All Digital Design
• ­ Digital equalization mitigates the effect of multiple RF path differences to provide deep nulls on jamming signals
• ­ Field Programmable Gate Arrays (FPGA’s) provide ease of feature upgrades and integration with ultratightly coupled navigation system architectures
• As the use of GPS becomes more widespread in both commercial and military navigation and guidance systems, the need to assure the accurate and continuous functionality of the GPS receiver has become more acute. Radix Technologies, Inc. has applied advanced signal and communications intelligence techniques developed for the exploitation of direct-sequence spread spectrum signals (DSSS) to processing GPS frequency bands and the embedded waveforms. By leveraging its adaptive beamforming expertise, Radix Technologies, Inc. has developed an all digital Anti-Jam receiver for GPS applications. The receiver employs Radix’s patented Code Gated Maximum Likelihood (CGML) technique to simultaneously steer antenna beams towards the GPS satellites and deep antenna nulls towards the interfering signals. CGML generates the maximum signal to interference plus noise ratio (SINR) possible allowing GPS signal reception even in heavily jammed environments. CGML provides these benefits without requiring an Inertial Navigation System (INS) input to steer the beams as needed by other anti-jam receivers (this capability is called blind adaptation).