Focal Point Positioning, a UK-based GNSS software provider, has announced the results from Jammertest 2025, showing how its patented Supercorrelation® technology enables GNSS receivers to recover and track authentic satellite signals under real-world spoofing conditions. Tested during open-air trials in Andøya, Norway, in September 2025, the software-based solution demonstrated the ability to suppress inauthentic signals and maintain signal integrity, addressing a growing need for resilient positioning in safety-critical applications.
The trials formed part of Jammertest, an internationally recognised test campaign hosted by Norwegian authorities to evaluate GNSS performance under realistic jamming and spoofing scenarios. FocalPoint captured live radio frequency (RF) data using a test vehicle equipped with a roof-mounted GNSS antenna and a LabSat 4 recorder. This was complemented by an inertial measurement unit (IMU) and live recordings from commercial off-the-shelf GNSS receivers. The recorded RF data was subsequently replayed into multiple receivers at FocalPoint’s Cambridge facility.
Laurence Bennett, Algorithm Engineer at Focal Point Positioning, who attended the event, explains, “Jammertest was an ideal opportunity to evaluate GNSS performance under realistic compromised conditions and understand how this technology can withstand the effects of spoofing.
“We demonstrated how Supercorrelation® enables receivers to distinguish between genuine and inauthentic signals, improving resilience without the need for additional, complex hardware,” added Bennett.
Analysis of the results showed a clear difference in receiver performance with and without Supercorrelation® processing. During meaconing attacks – where genuine GNSS signals are rebroadcast to mislead receivers – conventional processing methods were unable to resolve the authentic line-of-sight satellite signal, which became obscured by stronger, delayed inauthentic signals. Under these conditions, receivers risk tracking the spoofed signal, compromising positioning integrity.
In contrast, Supercorrelation® processing enabled the authentic signal to be recovered and tracked, while significantly reducing the impact of the meaconed signal. Supercorrelation® achieves this through long motion-compensated coherent integration, reinforcing genuine satellite signals while suppressing delayed or inauthentic signals. As a software-based solution, it can be deployed as a simple firmware upgrade, supporting scalable integration across GNSS-enabled devices.
“As sectors such as automotive, mobile and critical infrastructure become more reliant on GNSS, resilience to this kind of disruption is becoming increasingly important,” added Bennett. “Spoofing and meaconing attacks pose a growing risk to positioning accuracy, particularly in safety-critical applications where compromised signals can have significant operational consequences.”
Focal Point Positioning plans to publish further technical analysis of its Jammertest 2025 results in the coming months, supporting ongoing collaboration with chipset partners.
Read FocalPoint’s first look at the results by visiting the company’s website.
Focal Point Positioning develops next-generation GNSS positioning solutions that make satellite navigation more accurate, resilient and secure. Click here to download the latest results from its global trials, https://focalpointpositioning.com/resources/insights/downloads-whitepaper/focalpoint-stmicroelectronics-integration-results/
