Organizers of Jammertest, a large-scale trial of GNSS resilience technologies, is now open to applications. Jammertest 2026 will take place Sept. 14-18 in Norway.
Application deadline is April 6.
Jammertest is an annual event held at Andøya, recognized as the largest open PNT/GNSS resilience testing event in the world. The event provides a unique opportunity to test the robustness of navigation and positioning systems.
For the fifth consecutive year, the Norwegian Public Roads Administration, Norwegian Communications Authority, Norwegian Defense Research Establishment, Norwegian Metrology Service, Norwegian Space Agency, Norwegian Mapping Authority, Avinor and Testnor will be organizing the event.
Due to high demand, there will be an application process, and selected participants will be invited to attend. Jammertest partners reserve the right to select participants based on Norwegian national interest and needs.
The application pertains to the entire organization and is not individual. This means that each organization only needs to submit one application.
To learn more about the application process, visit the Jammertest website.
Net Insight has launched TN3100E, a TimeNode in the Zyntai family built for markets that demand enhanced timing resilience in challenging environments. The TN3100E delivers multiband GNSS for superior accuracy, supports India’s GNSS IRNSS/NavIC, and adds advanced anti-jamming and anti-spoofing features.
The TN3100E is the latest TimeNode hardware unit in the Zyntai product family. It provides enhanced GNSS functionalities designed for markets that depend on GNSS as time source in challenging environments where robust protection against interference is essential.
The TN3100E introduces new capabilities for Improved anti-jamming and anti-spoofing. TN3100E fully supports the Open Service Navigation Message Authentication (OSNMA) used by Galileo to verify signal authenticity. This, together with Net Insight’s time-based anti-spoofing techniques, enables the TN3100E to deliver a high level of anti-spoofing protection.
TN3100E is commercially available now. Visit Net Insight’s booth 24 at ITSF 2025 Oct. 27–30 in Prague.
Architecture of the X-Survey antenna. (Image: Harxon)
Blocking interference
Interference can be blocked at the data-collection stage, using an advanced antenna.
Harxon’s X-Survey is a compact high-precision GNSS antenna. It provides superior navigation and communication performance in surveying applications. A frontal band-pass filter setting effectively rejects out-of-band signals before they enter the low-noise amplifier of the antenna for signal augmentation.
Meanwhile, the filter itself has insertion loss, making a low insertion loss filter a prerequisite for optimal system noise reduction. To avoid this situation, X-Survey employs ceramic filter with low signal loss and in-band flatness to significantly improve system anti-interference capability and ensure reliable signal receiving.
The mosaic module provides AIM+ mitigation technology. (Image: Septentrio)
Septentrio began to tackle the interference problem more than 20 years go, designing and manufacturing high-precision GNSS receiver technology with emphasis on reliability and robustness. The result is Advanced Interference Monitoring and Mitigation (AIM+) technology which secures the company’s GNSS receivers against jamming and spoofing interference. AIM+ has recently been upgraded with an extended anti-spoofing functionality.
Building on its existing spoofing detection, Septentrio has developed a new anti-spoofing algorithm for its commercial receivers. The algorithm leverages Galileo Open Service Navigation Message Authentication (OSNMA) for spoofing resistance. It was developed in the framework of the GSA FANTASTIC project with the goal of improving the security of timing in critical infrastructure.
Mobile devices and cloud applications increasingly rely on GNSS technology used by telecom companies. Having secure and robust GNSS receivers in telecom infrastructure is key to reliable mobile and positioning services.
Alternative signals
Prototype design of the PNT-5500. (Image: Jackson Labs)
A new reference receiver, Jackson Labs’ PNT-5500, includes a custom Satelles/Iridium (STL) and GPS receiver, and an optional Edge Grandmaster/PTP1588 capability.
Using STL signals received directly through a small antenna mounted on the device, the PNT-5500 provides nanosecond timing synchronization in GPS-challenged environments, including deep indoors (no rooftop antenna required). It provides secure timing during GPS jamming and spoofing events. The unit is designed for high-volume, low-cost telecom small-cell synchronization, and is optionally available with holdover oscillators such as DOCXO and CSAC atomic clocks.
While GPS is vulnerable to jamming and spoofing, the PNT-5500 uses the Iridium infrastructure to provide assured timing that is impervious to spoofing and provides 1,000X higher signal strength compared to GPS, producing jamming resilience and deep-indoor reception. The system is designed to be fully interoperable with legacy equipment, for a low-cost, fully-deployed Assured PNT capability alternative to GNSS today.
Assessing vulnerability
Image: Qascom
Qascom offers several robust PNT services and products, including vulnerability assessment, robust navigation and interference localization.
Vulnerability assessment is the key proactive measure, using cutting-edge signal generators to design and test tomorrow’s receivers. For example, Qascom’s QA707 GNSS simulator tests receivers against emerging jamming and spoofing threats, allowing OEMs to discover in advance any potential vulnerability that may affect the availability and the integrity of the signal.
Robust navigation is supported by advanced mitigation algorithms, equipped with pre and post-correlation algorithms, as well as the inclusion of sensor fusion and dead-reckoning features.
Qascom’s attack detection products include external monitoring networks that support GNSS receivers. These networks provide an accurate perception of the operational environment, allowing threat characterization, classification and forecast. For instance, Qascom’s QB100 enables the simultaneous threat detection and localization by means of a monitoring cluster that delivers 24/7 situational awareness to a set of target receivers within the protection area.
Reliable timing
Meinberg provides GNSS timing solutions for nearly every application type. Its reliable systems are based on firmware built from the ground up by an in-house team of expert engineers. All Meinberg firmware is constantly checked and updated to ensure it adapts to evolving industry standards.
The company’s synchronization systems use a built-in Meinberg GPS receiver or combined GPS/GLONASS clock. They also support a broad range of reference time sources, including 1 PPS, 10 MHz, inter-range instrumentation group time codes (both direct current level shift and amplitude modulated), or network time protocol (NTP) servers. This redundancy in synchronization sources means Meinberg’s systems are protected against a loss of signal. Furthermore, to ensure the correctness of the reference time and date, an intuitive Secure Hybrid System (SHS) feature includes an independent secondary clock for enhanced plausibility checks.
For superior holdover performance, the Meinberg XHERB (with one or two Rubidium modules from Stanford Research) can be added to the Meinberg Intelligent Modular Synchronization (IMS) time and frequency systems. If the reference clock loses its sync source, the XHE chassis will provide the sync reference for the IMS chassis based on its holdover performance.
