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Application

GNSS in High-Interference Environments

GNSS in high-interference environments such as ports, airports, substations, telecom sites, mines and dense cities needs a receiver that keeps RTK running when the radio spectrum is noisy. Eview receivers, powered by Septentrio modules, use AIM+ anti-jamming, Galileo OSNMA and multi-constellation tracking to stay accurate where ordinary receivers lose their fix.

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AIM+
Anti-jamming on all receivers
OSNMA
Galileo signal authentication
0.6 cm
RTK accuracy + 0.5 ppm
~7 s
RTK initialisation
Where interference happens

Where civil GNSS users meet interference

Ports and container terminals
Radar, VHF radios, crane drives and steel container stacks create interference and multipath. Straddle carriers and quay equipment need RTK that holds through the noise. See port straddle carrier GNSS.
Near airports
Aeronautical radio systems such as DME operate in the band next to GPS L5 and Galileo E5, adding pulsed interference for receivers on nearby sites, roads and drone operations. See aviation GNSS.
Substations and power lines
High-voltage equipment radiates broadband noise, and the magnetic field around conductors disturbs compasses. Drones and monitoring stations near the grid need both AIM+ and dual-antenna heading. See inspection drones.
Telecom masts and rooftops
Cellular and broadcast transmitters can overload a GNSS front end when receivers share a rooftop or mast. Reference and monitoring stations on these sites need strong interference rejection. See deformation monitoring.
Mining sites
Fleet radios, heavy machinery and deep pit walls combine interference with a partial sky view. Machine guidance needs multi-constellation tracking plus interference suppression. See GNSS for mining.
Roads, yards and depots
Illegal in-cab jammers used in some trucks blank nearby receivers for seconds or minutes as they pass, disrupting vehicles, yard automation and roadside stations. See logistics and rail.
Recommended products

Eview products that keep RTK working under interference

ProductBest forKey specs
HB10Drones and vehicles in the noisiest RF sitesAsteRx-m3 Pro+, AIM+, OSNMA, dual-antenna heading 0.15° at 1 m, 100 Hz, <10 ms latency
HB52 / HB52HLight robots and dronesmosaic-G5, AIM+, OSNMA, 48 × 35 × 12.6 mm, microSD; HB52H adds dual-antenna heading
HBEV11 smart antennaVehicles, machines and simple base stationsReceiver and full-band antenna in one unit, mosaic-G5, base or rover, one M12 cable, Galileo HAS
HB62Base station on a noisy siteRugged base, mosaic-X5, NTRIP, Ethernet, 64 GB logging, IP67, 9–36 V
EV288 antennaFixed and vehicle installationsFull-band (L5, E6, L-band), 5/8-inch mount, IP67, vibration and salt-spray tested

All products are quote-based. For a complete datasheet, email sales@gnss-solutions.com. For how the technology works, see AIM+ anti-jamming technology and OSNMA anti-spoofing.

Use cases

Applications that rely on RTK under interference

Urban canyons
Delivery robots and vehicles in dense cities face RF noise, reflections and blocked sky at the same time. See robotics GNSS.
Events and broadcast sites
Stadiums and festivals concentrate video links and radios, a hard environment for camera drones and robots. See drone GNSS.
Construction machine control
Excavators and dozers working beside roads, railways and telecom masts keep centimetre guidance. See machine control.
Farming near infrastructure
Auto-steer tractors working under power lines and near masts need RTK that does not drop mid-pass. See precision agriculture.
Harbours and vessels
Positioning and heading for vessels and harbour craft surrounded by radar and marine radios. See marine GNSS.
Reference and timing stations
Base stations and timing references near interference sources need to detect and survive jamming. See timing under jamming.
Integration

Getting the most out of interference protection

Antenna placement
Mount antennas high, away from radio transmitters and cables, with a clear sky view. A quality multi-band antenna improves rejection. See how to choose a GNSS antenna.
Integrity outputs
RAIM+ flags inconsistent measurements and OSNMA reports authentication status in SBF output, so your software can react. See RAIM+ integrity.
Corrections and logging
RTCM v3 from NTRIP or your own base, plus raw data logging to analyse interference events later. See NTRIP, RTCM and RINEX.
FAQ

GNSS interference: frequently asked questions

What causes GNSS interference in civil environments?

Most civil interference is unintentional: radar, radio and video links, telecom transmitters, high-voltage equipment and faulty electronics. Illegal in-vehicle jammers add short, strong bursts on roads and in depots. Reflections from steel and buildings add multipath on top. The result is lost fixes, RTK dropping to float or jumps in position.

Will an Eview receiver keep RTK working near a jammer?

Septentrio AIM+ detects and suppresses narrowband and wideband interference, which keeps RTK available in many situations where ordinary receivers lose their fix. How much protection you get depends on the power and distance of the source and on the antenna installation. Our Jammertest 2025 article shows AIM+ results from open field tests.

What is the difference between jamming and spoofing?

Jamming overpowers GNSS signals with noise so the receiver cannot track them. Spoofing transmits false GNSS-like signals to produce a wrong position or time. AIM+ addresses jamming, while Galileo OSNMA authenticates navigation messages to help detect spoofing. OSNMA is not available on mosaic-H products.

Where can I learn how AIM+ works technically?

This page covers where interference happens and which products to choose. For the technical detail of how AIM+ suppresses interference, see our anti-jamming technology page, which explains the filtering in detail. Galileo signal authentication is covered on our separate OSNMA anti-spoofing page.

Which product should I use as a base station on a noisy site?

The HB62 is a rugged base receiver with mosaic-X5, AIM+, NTRIP, Ethernet, 64 GB logging, IP67 and a 9–36 V supply. For a simpler installation, the HBEV11 smart antenna can run as a base with a single M12 cable. Place the antenna away from transmitters wherever possible.

Related reading

Jammertest 2025: AIM+ anti-jamming resultsGNSS anti-jamming vs anti-spoofingDetecting and preventing GNSS spoofing on commercial drones

Working in a high-interference environment?

Tell us about your site, the interference you see and your accuracy target, and we will recommend a receiver and antenna.

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