Low Elevation Antenna Nuller (LEAN)

* Existing Fixed Reception Patterned Antenna (FRPA) can easily be jammed

* LEAN will be an adaptive array that protects a Global Positioning System (GPS) receiver by automatically nulling interference

* Salient Features
   - Can directly replace existing FRPA system
   - Normal GPS signal reception when no interference present
   - Significantly lower cost than other antenna array systems
   - Nulls Interference at L1 or L2
   - Nulls multiple low elevation interference
   - RF connection to GPS receiver