A new way to understand your RF environment

Because intentional or unintentional Radio Frequency Interference (RFI) are impacting GNSS performance, knowing your RF environment is critical. Spirent GSS200D is a truly end-to-end solution that builds up a complete picture of interference activity at site of interest. It continuously monitors the GNSS frequency bands for interference, captures and analyses them.

The GSS200D is the world’s first detection system that operates simultaneously on multi-frequency.

GSS200D front view

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Easy and secure

PT Cloud

RFI “events” are automatically uploaded on PT Cloud, Spirent’s secure cloud infrastructure. Access the results and manage your GSS200D via secure authentication and a simple web browser.

Discover PT Cloud’s data analytics and visualization tools, enabling monitoring over time and in-depth trend analysis.

A comprehensive picture of your RF environment

The GSS200D can enable correlation between observed performance issues and the threats that caused them, confirm that a particular installation is contaminated or uncontaminated by RF interference.

It can help to differentiate nonintentional interference from jamming, distinguish different jammers or identify multiple detections of the same jammers.

It provides quantified information that can support the development of effective countermeasures.

GSS200D Detector - Interference screenshots

Multi-Frequency Monitoring.
Enable 24/7 constant monitoring on multi-constellation and multi-frequency bands and easy interface for operation.
Continuous monitoring
Automatic Detection & Alerts
Automatically capture both intentional and unintentional RFI events thanks to an advanced detection algorithm. And whenever it happens, you can choose to be notified by email almost instantaneously.
Interference Characterization
RFI events are analyzed and given a type, because it is important to make the difference between unintentional interference and jamming.
Potential impact
Interference Prioritization
Events are automatically ranked based on the likely impact to GNSS services, allowing a quick prioritization of the threats.
Analytics & Reporting
Access to RFI events data such as spectrogram and spectrum, time and frequency, enabling monitoring over time and in-depth trend analysis.
Resynthesize and replay RFI on PT TestBench to test a receiver (available separately).

Is this right for me?

Our experienced GNSS engineering team will be happy to chat about your test challenges – and advise on which solutions will give you the best results.

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Use cases


GBAS/SBAS service providers

Site selection and RFI monitoring for EGNOS and WAAS providers and operators


Civil Aviation

Airports, national air traffic control, regulatory authorities

Power infrastructure

Power Infrastructure

Energy infrastructure such as power grids and power stations


Telecoms and broadcast

Infrastructure and service providers

Transport infrastructure

Transport infrastructure

Highway, Road Tolling, Ports and Inland ports, railways and logistics

Autonomous vehicle

Autonomous vehicles

Autonomous vehicle providers

Professional Services

Threat Analysis Services & Report

Spirent Professional Services Team can further analyse the events detected using a Spirent Detector, assess the impact of the RFI on your GNSS receiver and provide the results and recommended actions in a report.

Learn more →

The Fundamentals of GNSS Simulation

An introduction to simulating GNSS signals for test purposes: what you should test, why, and how.

Download eBook →

Fundamentals of GPS Threats

Understand how the growing threats to GNSS-enabled systems can impact your device – and, importantly, what you can do about it.

Download white paper →

How to Construct a GNSS Test Plan

A guide to the basic essentials, written to help engineers devising a GNSS or GPS test regime for the first time.

Download eBook →


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