OVERVIEW: Electronic warfare systems developed to deny or degrade the reception of Global Positioning System (GPS) signals used for navigation, timing, and targeting across military and civilian platforms.

GENERAL DESCRIPTION: These jammers operate by emitting radio frequency interference in the L1 (1575.42 MHz), L2 (1227.60 MHz), and sometimes L5 (1176.45 MHz) bands, disrupting the GPS signal reception within a localized or wide-area footprint. They vary from man-portable devices to powerful vehicle-mounted or airborne systems. Advanced systems may incorporate smart jamming (frequency hopping, beamforming), spoofing techniques, and DRFM-based deception. GPS jamming can interfere with guided munitions, UAV operations, and command and control synchronization, making them a key component of modern electronic warfare strategies.

ROLE SUMMARY:
Category: Electronic Countermeasure (ECM)
Primary Use: Navigation and timing signal denial
Function: RF jamming (GPS L1/L2/L5 bands)
Platform: Ground vehicles, UAVs, aircraft, fixed installations
Integration: Standalone or as part of an EW suite

See Specific information under [Sensors/EW] and [Properties] sections.

SOURCE:
NATO EW Doctrine, US Army Field Manual FM 3-36
https://en.wikipedia.org/wiki/GPS_jamming
https://en.wikipedia.org/wiki/Global_Positioning_System