Protect your precision:
How to combat GNSS jamming and
spoofing for survey-grade accuracy

GNSS signals weaken to 40-watt lightbulb levels at GNSS receivers, exposing them to jamming noise overloads and spoofing fake mimics that cause position errors. This eBook by Trimble® covers detection via spectrum analyzers, RAIM integrity checks and Trimble Maxwell™ 7 technology filtering for reliable positioning in construction, agriculture and marine applications.

In this eBook, you will learn how to:

• Spot jamming via carrier-to-noise drops and spoofing through abrupt position drifts using onboard spectrum analyzers
• Reject fake signals with Trimble Maxwell DSP, tracking only authentic satellite data across GPS, GLONASS and Galileo
• Verify orbits and cross-check L1/L2C/L5 data to flag inconsistencies from meaconing or chirp jammers
• Apply RAIM to exclude compromised constellations, computing positions from unaffected ones like BeiDou or SBAS
• Limit satellite search windows and sanity-check implausible shifts for continuous survey accuracy