▎EW Mesh

GNSS Anti-Jam

Hardware and software techniques that preserve GNSS positioning under jamming.

Definition

GNSS anti-jam combines CRPA antennas, beam nulling, M-code (for U.S. GPS), and inertial coupling to preserve a position-navigation-timing solution under hostile jamming. It is a prerequisite for any autonomous platform expected to operate in EW-contested airspace.

Reference attributes

Hardware layer: CRPA, M-code receiver
Software layer: INS coupling, signal authentication

Related terms

Controlled Reception Pattern Antenna (CRPA)
Adaptive antenna array that nulls jammers by steering its reception pattern.
Alternative Positioning, Navigation, and Timing (Alt-PNT)
Non-GNSS sources of PNT used when satellite navigation is denied or degraded.

#pnt#anti-jam