Home › Solutions › Anti-Jamming & Anti-Spoofing
Solution

Anti-Jamming & Anti-Spoofing GNSS — Protect Your Positioning from Interference

Septentrio AIM+ technology delivers 60 dB anti-jamming and advanced anti-spoofing detection. Maintain RTK fix integrity in RF-congested environments — construction sites, mines, airports, and urban canyons.

Get a Quote
View Anti-Jamming Products

60 dB
AIM+ Suppression
All Bands
GPS / GNSS Coverage
<1 cm
RTK Under Jamming
OSNMA
Galileo Auth
Overview

Why Anti-Jamming GNSS Matters

RF interference is the single biggest threat to GNSS reliability in professional environments. From construction sites with diesel-electric machinery and radio comms to mining operations with high-voltage power lines and cellular repeaters — every deployment faces some level of RF noise that can degrade or completely knock out GNSS positioning.

Standard GNSS receivers typically handle interference up to 20-25 dB before losing lock or dropping to degraded accuracy. Eview GNSS receivers with Septentrio AIM+ (Advanced Interference Mitigation) suppress interference up to 60 dB — maintaining centimetre-level RTK accuracy in conditions that would cripple ordinary receivers.

Common Interference Sources
⚠ Radio towers & broadcast transmitters — Broadband RF noise near cell towers
⚠ Diesel-electric machinery — Generators and motors on construction sites
⚠ Power lines & substations — High-voltage corona discharge
⚠ Personal privacy jammers — Illegal GPS jammers near roads and facilities
⚠ Multipath reflections — Signal bounce from buildings, cliffs, structures
⚠ Spoofing attacks — Fake GNSS signals targeting drones and vehicles

AIM+ Anti-Jamming — How It Works

🔍
Real-Time Spectral Monitoring
AIM+ continuously scans all GNSS frequency bands (L1, L2, L5, E1, E5a, E5b, B1, B2, B3) for interference signals. It detects narrowband continuous wave interference, wideband noise, and pulsed interference in real time.
🎯
Adaptive Notch Filtering
When interference is detected, AIM+ deploys adaptive digital notch filters that remove the interfering signal while preserving the GNSS signal. Filters adjust dynamically as interference frequency shifts.
🛡️
60 dB Suppression
AIM+ achieves up to 60 dB of interference suppression — over 1,000x more effective than standard receiver front-ends. This means maintaining RTK lock even when a jammer is operating nearby.
📊
Interference Analytics
AIM+ provides real-time spectrum analysis and interference reporting via the receiver’s web interface and log output. Operators can visualize the RF environment and identify interference sources.
🔐
OSNMA Anti-Spoofing
Galileo OSNMA (Open Service Navigation Message Authentication) cryptographically verifies that GNSS signals originate from Galileo satellites. Eview receivers with OSNMA detect and reject spoofed signals automatically.
🧠
H-Shield Multipath Mitigation
H-Shield technology uses advanced correlator techniques to identify and reject signal reflections from buildings, terrain, and structures — critical for urban environments and deep-canopy operations.

Applications Requiring Anti-Jamming GNSS

🏗️
Construction Sites
Heavy machinery, generators, and radio comms create RF noise that degrades standard GNSS. AIM+ maintains RTK fix for 3D machine control and grade guidance in these environments.
⛏️
Mining Operations
Open-pit and underground mines have extreme RF environments. Anti-jamming GNSS ensures autonomous haul trucks and drill positioning systems stay operational.
🚁
Drone / UAV Operations
Drones are vulnerable to jamming and spoofing attacks. Anti-jamming GNSS and OSNMA authentication protect UAV navigation in sensitive airspace and near infrastructure.
🏙️
Urban Environments
Urban canyons combine multipath reflections with RF interference from cell towers and broadcast transmitters. AIM+ maintains positioning where standard receivers fail.
🤖
Autonomous Vehicles
Self-driving cars, robotaxis, and autonomous robots need guaranteed positioning integrity. Anti-jamming and anti-spoofing are essential for safety-critical navigation.
⚡
Critical Infrastructure
Power grids, telecom networks, and financial systems rely on GNSS for timing. Anti-spoofing protects against timing attacks that could disrupt infrastructure operations.

Anti-Jamming GNSS — Frequently Asked Questions

What is AIM+ anti-jamming technology?

AIM+ (Advanced Interference Mitigation) is Septentrio’s proprietary technology that detects and suppresses RF interference across all GNSS frequency bands. It uses adaptive notch filtering to remove interfering signals while preserving GNSS signals, achieving up to 60 dB of interference suppression — significantly more than standard receivers.

How does AIM+ compare to u-blox anti-jamming?

u-blox receivers (e.g., ZED-F9P) offer approximately 20-25 dB of interference mitigation through basic filtering. AIM+ provides up to 60 dB suppression — over 1,000x more effective. AIM+ also covers all GNSS bands simultaneously and provides real-time spectrum analytics not available on u-blox receivers.

Can anti-jamming GNSS protect against drone jammers?

Yes. AIM+ can suppress consumer and professional-grade GNSS jammers up to 60 dB, maintaining RTK lock even when a jammer is operating within close proximity. Combined with OSNMA anti-spoofing, Eview GNSS receivers provide comprehensive protection against both jamming and spoofing attacks targeting UAVs.

What is OSNMA anti-spoofing?

OSNMA (Open Service Navigation Message Authentication) is a Galileo service that digitally signs navigation data. Eview GNSS receivers with OSNMA support verify that GNSS signals genuinely originate from Galileo satellites, detecting and rejecting spoofed signals that attempt to fake position or timing data.

Will AIM+ work in a city with lots of radio towers?

Yes. Urban environments with dense radio towers, cellular base stations, and broadcast transmitters are a primary use case for AIM+. The technology was designed for exactly these RF-congested environments where standard GNSS receivers struggle to maintain lock.

Which Eview products include AIM+ anti-jamming?

All Eview GNSS receivers powered by Septentrio mosaic-X5 and mosaic-G5 modules include AIM+ anti-jamming. This includes the GNSS Receiver Box, GNSS Boards/OEM modules, and smart antenna products. Contact our team for specific product recommendations based on your application.

Need Anti-Jamming GNSS for Your Application?

Talk to our team about protecting your positioning from interference and spoofing threats.

Talk to a Specialist
View Products