Arizona-based Viavi is working with satellite communications and positioning provider Ground Control to enable assured maritime vessel tracking and navigation in GNSS-denied environments.

Viavi’s Secure µPNT STL-1000 LEO receiver module has been integrated into Ground Control’s RockFleet Assured asset tracking and navigation offering.

In today’s contested global environment, resilient position, navigation and timing (PNT) capabilities are crucial to safeguard critical infrastructure and assets. Reliance on GPS and GNSS leaves systems vulnerable to jamming, spoofing and disruption.

The Secure µPNT STL-1000 (www.viavisolutions.com/en-us/products/secure-micropnt-stl-1000-leo-receiver-module) is a compact software-defined receiver designed to operate with the Viavi SecureTime altGNSS LEO services. Delivering precise timing with holdover capability, it enables tracking, authentication and assured navigation in denied, degraded and disrupted space operational environment.

“With jamming and spoofing now a core element of cyber warfare, resilient PNT solutions are no longer optional,” said Doug Russell, senior vice president at Viavi. “The Secure µPNT STL-1000 enables assured, uninterrupted operations, especially in contested environments. Its compact size and low power consumption make it ideal for applications that require an extremely small, low-power, secure, resilient embedded PNT receiver.”

Alastair MacLeod, CEO of Ground Control (www.groundcontrol.com), added: “As the frequency of jamming and spoofing continues to rise, reliance on GPS and GNSS signals alone increasingly exposes both commercial and military operations to risk. Integrating Viavi’s Secure µPNT STL-1000 into RockFleet Assured delivers a trusted secondary position source, strengthening resilience for mission‑critical operations across defence, maritime and critical infrastructure environments.”

RockFleet Assured (www.groundcontrol.com/product/rockfleet-assured/) is a marine-grade assured PNT offering designed to support maritime vessel navigation and oversight in GNSS-denied environments.

Viavi (www.viavisolutions.com) specialises in test and measurement and optical technologies. Its test, monitoring, assurance and resilient PNT products enable and secure critical infrastructure ranging from data centre ecosystems and communication networks to military, aerospace, railway and first responder communications.