Countering jamming, spoofing and interference

The threats to GNSS-based positioning, navigation and timing are increasing in number and in prevalence. The technology to disrupt GPS has become much more accessible. Examples include increases in websites selling low-cost “personal protection” jammers and GPS starting to gain attention at hacker conventions.

Spirent offers a practical Robust PNT framework to audit receiver, system or application resilience. We can provide test systems for you to use as well as advice and professional test services. Use the resources below to learn how to measure and improve the robustness of your PNT system in the face of jamming, spoofing and other types of interference, and discover the solutions Spirent has to offer.

Quantify the impacts of GNSS vulnerabilities

Spirent maintains the only global navigation and timing threat intelligence database – including real detected interference threat waveforms, GNSS system events and errors, natural effects such as multipath and atmosphere and examples of spoofing attack vectors.

Robust PNT framework

Spirent’s Robust PNT framework enables informed decision making to improve resilience.

  • GSS200D Interference Detector to detect disruptive RF interference
  • Threat Intelligence Library of actual and typical threats
  • PT TestBench to regenerate RF vulnerabilities in the lab
  • Audit and test services

Fundamentals of GPS Threats

From jamming to solar storms, understand the growing threats to satellite navigation signals, and how they can impact your critical systems.

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Detecting and Protecting Against GPS Cyberthreats

GNSS-reliant systems are at risk from jamming, spoofing, and other types of deliberate or accidental interference. This paper explains what you can do about it.

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Products - Hardware

GSS7725 Interference Generator


A dedicated interference generator to help you test against GNSS interference.

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GSS7765 Interference Simulation


Combine with a Spirent GNSS simulator to create a comprehensive solution for testing location-aware equipment in the presence of RF interference.

Products - Software



Evaluate a GNSS receiver’s vulnerability to fake (“spoofed”) or replayed (“meaconed”) signals, in order to design effective countermeasures.

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PT TestBench

PT TestBench

Accelerate your testing and free up valuable time with Spirent’s proven GNSS test automation and reporting solution.

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Audit and Test Services

We will assess threat impacts for you and provide practical advice. The first step is an initial discussion with our experts where we will work with you and provide our recommendations on what approach to take.

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Follow our blog

With leadership of GNSS testing, Spirent knows more about making systems both accurate and robust than anyone else. So follow our Positioning Blog to keep up-to-date with the latest issues and solutions.

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GNSS Vulnerabilities LinkedIn Group

Join our LinkedIn group for professionals in the GNSS and Security industry to discuss and share information on GNSS vulnerabilities.

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What else can we help with?

  • I’d like to understand which performance tests I should run – and how to run them.

  • I’d like help with testing different GPS/GNSS receivers to ensure I choose the right one.

  • I’d like to understand how to measure and improve the performance of my PNT system.

  • I’d like to explore ways to test faster and at lower cost, without sacrificing quality.

  • I’d like to bring real world GNSS signals into the lab for repeatable testing.

Questions for Spirent experts? Submit a request for information.

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