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Precision Agriculture

RTK GNSS for Smart Farming

From centimeter-accurate auto-steer on tractors and sprayers to fully autonomous agricultural robots — Eview GNSS delivers the positioning precision modern farming demands.

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<1 cm
RTK Accuracy
<10s
RTK Convergence
±0.5″
Pass-to-Pass
AIM+
Anti-Jamming
Why RTK Matters in Agriculture

The Cost of Imprecise Positioning on the Farm

Even a 5 cm positioning error translates to crop waste, excessive chemical application, skipped rows, and compaction damage from overlapping tire passes. At scale — thousands of acres over a growing season — sub-inch guidance accuracy has a direct, measurable impact on input costs and yield.

Eview GNSS receivers achieve centimeter-level RTK accuracy using Septentrio’s multi-frequency, multi-constellation engine. They connect to any NTRIP correction network and support all standard guidance protocols (NMEA-0183, NMEA-2000, ROS, proprietary CAN).

Unlike consumer-grade GPS, Eview modules include AIM+ anti-jamming technology — essential on modern farms where adjacent cell towers, radio interference, and other RF sources degrade signal quality and cause guidance drift.

RTK GNSS precision agriculture smart farming receiver
Key Capabilities
✓
Sub-inch pass-to-pass repeatability — consistent guidance line accuracy across the entire field season
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NTRIP / VRS correction support — works with any RTK network or a local base station
✓
Dual-antenna heading — precise orientation for variable-rate applicators and row planters
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AIM+ interference protection — maintains RTK lock near cell towers and radio infrastructure
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Multiple data outputs — NMEA 0183/2000, ROS2 driver, binary SBF for custom integrations
Applications

Precision Agriculture Applications

Eview GNSS receivers are deployed across the full range of precision farming equipment — from manned tractors to fully autonomous field robots.

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Tractor Auto-Steer
Sub-inch RTK guidance for auto-steer retrofits and OEM installations on tractors of any brand. Eliminates operator fatigue on long cultivation passes and dramatically reduces input overlap. Compatible with all major auto-steer controllers.
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Sprayers & Boom Control
Centimeter-accurate positioning for pesticide and fertilizer sprayers with section control and variable rate application. Dual-antenna heading ensures accurate boom orientation even during sharp headland turns.
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Precision Planters & Seeders
Row-by-row guidance accuracy for planters, seeders, and transplanters. RTK GNSS ensures consistent row spacing, reduces skip rows, and supports prescription seeding maps tied to soil zone data.
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Harvesters & Combines
Accurate positioning for combine auto-steer, yield mapping, and grain cart management. High-dynamics GNSS handles the speed and vibration of harvesting equipment without RTK drop-outs.
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Agricultural Robots
RTK GNSS positioning for autonomous crop inspection robots, weeding robots, and soil sampling robots. Fast RTK convergence and AIM+ protection enable reliable navigation in open field environments.
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Smart Lawn & Orchard Robots
Compact RTK modules for autonomous lawn mowers, orchard navigation robots, and vineyard sprayers. Centimeter boundary accuracy for virtual wire-free mowing zones and orchard row-following.
How It Works

From Satellite Signal to Centimeter Accuracy

RTK GNSS for agriculture works by combining raw GNSS signals from multiple constellations with real-time correction data from a reference network.

1
Multi-Constellation Tracking
The Eview receiver simultaneously tracks GPS, GLONASS, Galileo, BeiDou, and QZSS satellites — maximizing visible satellites for reliable RTK initialization in any field location.
2
RTK Correction via NTRIP
The receiver connects to any NTRIP correction network (or your own base station) via cellular modem. Differential corrections resolve carrier-phase ambiguity to achieve centimeter-level accuracy in under 10 seconds.
3
Centimeter Output to Guidance
The receiver outputs RTK-corrected position data via NMEA 0183, NMEA 2000, or CAN bus to your steering controller, section control system, or autonomous robot navigation stack.
Septentrio AIM+ Technology

Why AIM+ Matters on Modern Farms

Modern agricultural environments are increasingly RF-hostile. Cell towers on rural roads, neighboring farmers’ GNSS correction transmitters, and industrial RF equipment near farm buildings can degrade standard GNSS signals — causing guidance drift at critical moments.

Septentrio’s AIM+ (Advanced Interference Mitigation) technology in every Eview receiver provides up to 60 dB of active jamming suppression across all GNSS frequency bands simultaneously. AIM+ detects narrowband, broadband, and swept interference in real time — maintaining RTK lock even in compromised RF conditions.

For precision farming, this means consistent sub-inch accuracy from the first pass to the last, regardless of the RF environment at your specific farm location.

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60 dB Jamming Suppression
Active interference mitigation across all frequency bands simultaneously — the highest civilian AIM specification available.
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Anti-Spoofing Detection
Detects and rejects spoofed GNSS signals, preventing guidance errors caused by malicious or accidental signal replay.
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5-Constellation GNSS
GPS + GLONASS + Galileo + BeiDou + QZSS ensures maximum satellite visibility and fast RTK convergence even at low elevation angles.
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<10s RTK Convergence
Fast ambiguity resolution means the receiver achieves centimeter accuracy within seconds of startup or signal re-acquisition.
FAQ

Frequently Asked Questions

What is RTK GNSS and why does precision agriculture need it?
RTK (Real-Time Kinematic) GNSS uses carrier-phase measurements and real-time corrections from a reference station network to achieve centimeter-level accuracy — far beyond the 1–3 meter accuracy of standard GPS. Precision agriculture needs RTK because sub-inch pass-to-pass accuracy directly reduces input overlap (fertilizer, pesticide, seed), prevents skipped rows, and enables autonomous agricultural robots to navigate reliably without GPS drift. Eview RTK receivers achieve <1 cm + 0.5 ppm accuracy with <10 second convergence.
Can Eview GNSS receivers work with my existing auto-steer system?
Yes. Eview GNSS receivers output standard NMEA 0183 and NMEA 2000 messages, making them compatible with virtually all aftermarket auto-steer controllers (Trimble, John Deere, AGCO, and generic NMEA-compatible systems). For OEM integration, receivers also support binary SBF output and CAN bus. Our team can advise on the best integration approach for your specific tractor and guidance system combination.
What GNSS correction networks do Eview receivers support?
Eview receivers support any NTRIP-compatible RTK correction network including CORS networks, VRS (Virtual Reference Station) networks, and commercial RTK-as-a-service networks. They also support operation with a local RTK base station for areas with no network coverage. The receiver connects to the correction network via a cellular modem (UART or USB) or a built-in cellular option depending on the module.
What GNSS do autonomous agricultural robots use?
Autonomous agricultural robots — including weeding robots, crop inspection robots, orchard robots, and smart lawn mowers — require RTK GNSS for centimeter-level positioning accuracy and reliable geofencing. Compact modules like Eview’s Mosaic Click and Linnet are designed for robot integration: lightweight, fast-convergence RTK, with ROS2 driver support and AIM+ protection for field environments where interference from farm equipment is common.
How accurate does GNSS need to be for smart lawn mowing robots?
Smart lawn mowing robots need 2–5 cm RTK accuracy for reliable virtual boundary following, stripe mowing patterns, and obstacle zone avoidance. This is the “centimeter” tier — achievable only with RTK GNSS, not standard GPS (which delivers 1–3 m accuracy). Eview’s compact RTK modules deliver <1 cm accuracy with fast convergence, enabling lawn robots to operate without physical perimeter wires across gardens of any size and shape.
Does RF interference affect GNSS guidance on farms?
Yes — and more often than most farmers realize. Cell towers along rural roads, neighboring precision agriculture correction transmitters, and industrial equipment near farm buildings all generate RF interference that can cause standard GNSS receivers to lose RTK lock or drift. Eview’s AIM+ anti-jamming technology suppresses up to 60 dB of interference, maintaining consistent centimeter accuracy throughout field operations regardless of local RF conditions.

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Our GNSS specialists will help you choose the right RTK receiver, antenna, and correction network configuration for your specific farming operation.

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