Low Elevation Antenna Nuller (LEAN)

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

* LEAN is 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 interferences
   - RF connection to GPS receiver
   - Forms a complete horizon null

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