Spoofed or Jammed? Protecting your offshore operations from GNSS interference

A critical challenge faced by offshore positioning, navigation and timing (PNT) is threats to global navigation satellite system (GNSS) signals. Littoral regions with crowded radio frequency (RF) zones, such as the Black Sea, Baltic Sea, Norwegian Sea and Mediterranean Sea, are prone to high levels of interference. Regions with strategic positions, such as Scandinavia, are also often subject to GNSS threats.

GNSS interference affects offshore marine operations, such as dynamic positioning of vessels for oil and gas exploration and wind farm maintenance and hydrographic surveying. With increasing automated and autonomous operations, knowing that your GNSS positioning is accurate and reliable is even more vital. 

Threats to GNSS signals fall into two broad categories: jamming and spoofing. While you may be aware of anti-jamming and anti-spoofing methods, understanding the different technologies and how they work together is complex. Harder still is trying to compare the performance of all these technologies.

To help you demystify GNSS interference, the Spoofed or Jammed? white paper walks you step-by-step through why and how GNSS interference occurs and provides in-depth explanations of the different mitigation technologies and factors contributing to their performance.

What you will learn:

Why are GNSS signals prone to jamming and spoofing?
•    We explain how GNSS signals are of fixed and known frequencies making them susceptible to jammers and spoofers emitting signals within the same frequency range
What is the difference between jamming and spoofing?
•    We describe how jamming results in a loss of PNT information, whereas spoofing tricks the receiver into reporting incorrect PNT information
What are the different types of jamming and spoofing attacks?
•    We show examples of narrowband, multi-tone, chirping, wideband and pulse jamming attacks and high power, matched power, overlapping and covered spoofing attacks
What technologies are used to mitigate jamming and spoofing?
•    We present GNSS signal-based, antenna-based and receiver-based levels of protection, as well as complementary equipment like inertial navigation systems (INS)
How is anti-jam performance measured?
•    We explain common values used in anti-jam product sheets including interference suppression and jammer-to-signal (J/S) ratio, what they mean and how they are determined

Click below to read the full white paper to better position yourself to safeguard your people, equipment and operations from increasing jamming and spoofing.

Read the Spoofed or Jammed white paper.