Ground Control addresses the growing limitations of relying solely on GPS for positioning, navigation, and timing in defense and high-risk operational environments.
As jamming and spoofing incidents increase across maritime, aviation, and defense sectors, operators are seeking resilient alternatives that can maintain positioning and timing capability during disruption.
GPS remains widely used across navigation infrastructure, supporting vessel operations, aircraft routing, and defense coordination. However, reliance on a single GNSS source creates operational vulnerability because GPS signals can be jammed, spoofed, or denied.
Recent interference activity highlights the scale of the issue. Reported incidents in the Baltic region increased by 127% between Q1 and Q2 2025. More than 1,000 vessels operating in Sudan and the Red Sea experienced interference during 2025, while 5,655 flights were reportedly spoofed in the Nicosia FIR between July and August 2024.
Why Resilience Requires More Than Anti-Jamming
Modern GPS disruption is not limited to signal denial alone. Jamming blocks access to GNSS signals, while spoofing attempts to provide false positioning information to receivers. As attacks can shift between jamming and spoofing, systems designed only for anti-jamming may remain vulnerable to deceptive interference.
Ground Control addresses this challenge through an Assured Positioning, Navigation, and Timing (A-PNT) approach intended to reduce dependence on a single positioning source. Rather than replacing GPS, A-PNT incorporates redundancy, position cross-checking, trusted timing, and continuity during disruption.
As part of this approach, Ground Control incorporates Iridium PNT, which operates independently of GPS infrastructure. Because the system does not rely on GNSS, it can provide positioning and timing capability when GPS signals are disrupted or cannot be trusted. The system also uses encrypted and authenticated signals intended to help protect against spoofing.
Supporting Operational Continuity
Ground Control’s RockFLEET Assured platform is designed for use in contested and high-risk operating environments. The architecture supports cable runs of up to 100 meters, allowing installation away from bridge locations.
The platform also includes backup battery capability that allows continued transmission for a period following cable loss or infrastructure damage.
RockFLEET Assured can be used with Ground Control’s chartplotter, a customer’s existing chartplotter, or integrated into wider bridge systems, allowing operators to incorporate resilient PNT capability into existing operational environments.
Reducing Dependence on a Single Navigation Source
GPS continues to play a central role in navigation and timing operations, but increasing levels of jamming and spoofing have highlighted the risks associated with relying on a single positioning source.
Ground Control’s A-PNT approach combines independent positioning capability, authenticated signals, and integration flexibility through the use of Iridium PNT and RockFLEET Assured.
