GPS Anti-Jam Antenna System (GAJAS) for Pseudolites and Blue Force Electronic Attack Interference Sources

In this topic, the U.S. Army seeks to develop a GPS anti-jam antenna system to mitigate interferences from hostile jammers as well as from co-site pseudolite and blue force electronic attack (BFEA) transmitters in order to protect a GPS receiver such that it can receive intended GPS signals effectively. Mayflower proposes a suite of innovative interference mitigation techniques to build a complete GPS anti-jam antenna system GAJAS (including both antenna array and antenna processing unit) that can overcome not only the co-site interference from pseudolites and BFEA transmissions but also the hostile jammers. The techniques involve time domain, frequency domain, as well as spatial domain approaches. These techniques are combined in GAJAS in a coherent fashion to form a complete solution to the various interference problems. In Phase I of this program, Mayflower will analyze the feasibility of proposed GAJAS system to meet the challenging signal processing requirements imposed by collocated GPS pseudolites and BFEA signals while mitigating hostile jammers in a size, weight and power (SWaP) efficient form factor. In the Phase II program Mayflower will build and demonstrate this GAJAS prototype system performance to meet the program objectives on a platform selected by the Army.