With TopShield, reliable GPS navigation remains possible even in the harshest and most hostile environments.
The anti-jam system is effective in all threat scenarios:
• multiple low-cost jammers
• onboard jammers
• high grade jamming by ground stations
Proven digital technology
Thales draws on more than 20 years of experience in onboard electronic warfare equipment. The company has been conducting fully digital antenna developments since 2003 and now proposes an advanced digital anti-jam architecture that significantly outperforms legacy anti-jam solutions. TopShield comprises a digital antenna electronics (DAE) unit, combined with a four-element Controlled Radiation Pattern Antenna (CRPA).As part of the new generation of fully digital GPS anti-jam solutions, TopShield offers significant improvements in performance at comparable cost:
• rejection of more jamming sources
• higher availability of satellite signal
• greater tolerance to antenna array installation constraints (uneven ground plane)
TopShield performs both null steering to cancel multiple jammers and beam forming to optimize satellite power using a fast STAP (Space Time Adaptive Processing) technique.
Miniature 3.5” antenna arrays and low volume antenna electronics ensure easy installation of TopShield400 onboard new or existing platforms in place of existing 3.5” antenna and preamplifier.