
Inertial Labs, a VIAVI Solutions Inc. company, has introduced its M-AJ-QUATRO anti-jamming antenna system for Assured Positioning, Navigation, and Timing (A-PNT) in GPS/GNSS-challenged environments.
Leveraging advanced Controlled Reception Pattern Antenna (CRPA) and digital processing technologies, the M-AJ-QUATRO is suited for multiple platforms ranging from military operations to commercial aviation.

The M-AJ-QUATRO operates seamlessly across the entire L1, L2, and L5 GNSS bands, providing robust interference mitigation and secure signal processing. Featuring adaptive digital nulling, it automatically suppresses jamming signals with over 34dB+ interference suppression (export-free version) and over 45dB+ interference suppression (export-controlled version), ensuring reliable performance in contested environments. The system’s jammer direction-finding capability identifies and isolates interference sources, enhancing situational awareness and operational effectiveness.
Designed for multi-constellation support, the M-AJ-QUATRO is compatible with GPS, GLONASS, GALILEO, BEIDOU, and QZSS, providing robust global coverage. Secure signal processing powered by dual FPGA-based encryption and anti-spoofing technology facilitates strong data integrity, safeguarding mission-critical applications. Designed to endure extreme conditions, this system meets stringent MIL-STD-810G and MIL-STD-461F standards, making it an ideal solution for defense and aerospace operations as global reliance on PNT services grows.
PNT services play an increasingly vital role in ensuring the reliable operation of various critical sectors, including transportation, AI hyperscale data centers, telecommunications, energy, finance, and defense. Government agencies and industry leaders are intensifying efforts to combat GNSS jamming and spoofing threats. The U.S. Federal Aviation Administration (FAA) and Naval Air Warfare Center Aircraft Division (NAWCAD) are accelerating the approval process for CRPA technology to enhance aviation safety and mitigate terrestrial-based GPS interference.
Jamie Marraccini, Vice President, Inertial Labs Products, VIAVI, commented, “As the FAA and NAWCAD push for CRPA integration into commercial aircraft, M-AJ-QUATRO is positioned as a market-ready solution for both military and civilian applications. With regulatory shifts streamlining CRPA adoption, this launch marks a significant step in ensuring secure, interference-free navigation for mission-critical operations.”