Navishield
Navishield is Indra Group’s anti-jamming system, designed to detect, characterise, and suppress interference, ensuring safe satellite navigation in both civil and military environments.
GNSS navigation as a strategic element in defence
Global Navigation Satellite Systems (GNSS) are a vital backbone for critical defence operations, providing completely reliable positioning, navigation, and timing (PNT).
However, these are weak, publicly accessible satellite signals that travel thousands of kilometres from space, making them vulnerable to interference, jamming, spoofing, and environmental disruptions. Such threats can jeopardise military operations, whether due to unintentional interference or deliberate jamming and spoofing.
Navishield: advanced anti-jamming technology
The Indra Group anti-jamming system, Navishield, is centred on a Controlled Reception Pattern Antenna (CRPA), which uses advanced beamforming and nulling techniques to isolate and eliminate interference signals.
Navishield ensures navigation on naval and land platforms, operates across all Galileo and GPS bands, including OS, PRS and M-code, and locates interference sources through Direction of Arrival (DoA) analysis. The system protects precision guidance, troop positioning and synchronised operations against malicious attacks and environmental threats.
- Resilient navigation: maintains signal integrity in contested environments.
- Platform versatility: adaptable to naval and land platforms, especially medium and large systems.
- Compact and efficient: with a diameter of 417 mm and power consumption below 80 W, it is optimised for performance and integration.
Advanced technological architecture
The Navishield phased-array CRPA is complemented by digital signal processing and spatial filtering, and supports multiple operating modes:
- Autonomous mode: interference protection always active.
- Guided mode: the receiver directs frequency suppression.
- Spot beam mode: enables advanced military codes such as GPS Block III and M-code.
Interfaces: RF, Ethernet and RS-422 for seamless integration into existing systems.
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