AUDITOR · Project

Low-Cost Precision GPS Receivers That Make Satellite-Guided Farming Affordable for Small Farms

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Imagine your phone's GPS but accurate to a few centimeters instead of a few meters — that's what professional farmers need to steer tractors automatically, spray only where weeds grow, and plant rows perfectly straight. The problem is those super-accurate receivers cost a fortune, pricing out smaller farms. AUDITOR built a software-based receiver that runs on cheap hardware but matches the accuracy of expensive professional units, using open-source code and clever atmospheric correction tricks to cut costs dramatically.

By the numbers

consortium partners across multiple disciplines

countries represented in the consortium

SMEs involved in the project, including the coordinator

43%

industry ratio in the consortium

The business problem

What needed solving

Professional GNSS receivers that deliver centimeter-level accuracy for precision farming cost tens of thousands of euros per unit, making satellite-guided agriculture unaffordable for small and medium-sized farms across Europe. Farmers are stuck choosing between expensive proprietary systems or inaccurate consumer-grade GPS that cannot support automated steering, variable-rate spraying, or precision planting.

The solution

What was built

A software-defined dual-frequency GNSS receiver ported to embedded hardware with real-time processing capability, plus a software demonstrator that generates augmentation correction streams from public GNSS network data. The receiver supports multi-constellation satellite systems with patented positioning techniques for faster, more accurate fixes.

Audience

Who needs this

Precision agriculture equipment companies looking for affordable receiver modulesFarm cooperatives wanting to offer GPS guidance services to small-scale membersGNSS receiver manufacturers seeking a flexible software-defined platformSurveying and geospatial companies wanting lower-cost professional-grade positioningAgricultural drone operators needing centimeter-accurate positioning on a budget

Business applications

Who can put this to work

Precision Agriculture Services

SME

Target: Companies providing GPS-guided farming services or selling precision agriculture equipment to farmers

If you are a precision agriculture provider struggling with the high cost of RTK-grade GNSS receivers that prices out small and medium farms — this project developed a software-defined dual-frequency receiver on low-cost embedded hardware that delivers professional-grade accuracy. The open-source base (GNSS-SDR) means you can customize it for your fleet without paying per-unit licensing fees. Built by a 7-partner consortium across 5 countries with 3 SMEs already involved in commercialization.

GNSS Receiver Manufacturing

mid-size

Target: Companies manufacturing or integrating satellite positioning hardware for commercial or industrial use

If you are a GNSS hardware manufacturer looking to differentiate with a flexible, upgradable receiver platform — AUDITOR ported a proven open-source software-defined receiver (GNSS-SDR) to an embedded system with hardware accelerators for real-time operation. The dual-frequency, multi-constellation design supports interference monitoring and encrypted-band authentication. This modular architecture lets you offer customizable receivers without redesigning silicon for each application.

Land Surveying and Geospatial

any

Target: Surveying firms and geospatial service providers needing centimeter-level positioning

If you are a surveying company paying premium prices for professional GNSS receivers and locked into proprietary correction services — this project built augmentation techniques with patented faster convergence times than commercially available solutions. The software demonstrator uses public data from GNSS networks to generate correction streams, potentially eliminating subscription fees for proprietary correction services. The receiver gives low-level access down to sample level for specialized applications like reflectometry.

Frequently asked

Quick answers

What would this receiver cost compared to professional GNSS equipment?

The project objective explicitly targets cost-effective precision agriculture for small and medium-sized farms, which current professional receivers price out. By using a software-defined approach on embedded hardware rather than custom ASICs, production costs drop significantly. However, no specific price point is stated in the available project data.

Can this scale to large fleet deployments across thousands of hectares?

The receiver design is modular, scalable, and upgradable by design — key advantages of the software-defined approach mentioned in the objective. Multi-frequency, multi-constellation support means it works across different satellite systems (GPS, Galileo, etc.). Based on available project data, the demonstrator was validated but mass production readiness would need further engineering.

Who owns the IP and can I license this technology?

The consortium states that the positioning techniques are already patented by the partners. The coordinator is ACORDE TECHNOLOGIES SA, a Spanish SME. The software layer is based on the open-source GNSS-SDR project, so the receiver software itself is customizable, but the patented augmentation algorithms would require licensing from the consortium.

Does this work with existing farm equipment and tractor guidance systems?

The objective describes a receiver module with form factor and capabilities comparable to existing professional receivers. This suggests drop-in compatibility is a design goal. The software layer's modularity and flexibility would allow integration with various guidance systems, though specific equipment compatibility testing is not detailed in the available data.

How accurate is the positioning compared to what I can buy today?

The project claims their patented techniques offer better accuracy with faster convergence times than solutions commercially available at the time (2016-2018). They implemented more sophisticated atmospheric models to further reduce ionospheric errors. Specific centimeter-level accuracy figures are not stated in the available project data.

What is the technology readiness — can I buy this today?

AUDITOR was an Innovation Action that ran from 2016 to 2018 and produced a software demonstrator. The core technology builds on the established open-source GNSS-SDR project. Based on available project data, this reached demonstration stage but a commercial off-the-shelf product is not confirmed.

Consortium

Who built it

The AUDITOR consortium brings together 7 partners from 5 countries (Germany, Greece, Spain, Italy, Netherlands), with a strong commercial orientation: 43% industry ratio and 3 SMEs out of 7 partners. The coordinator, ACORDE TECHNOLOGIES SA, is a Spanish SME — meaning the project was driven by a company with skin in the game, not just an academic exercise. Two universities and two research organizations provide the scientific backbone, particularly in atmospheric modeling and GNSS signal processing. This balanced mix of commercial drive and research depth is a good sign for technology that could actually reach the market.

ACORDE TECHNOLOGIES SACoordinator · ES
CENTRE TECNOLOGIC DE TELECOMUNICACIONS DE CATALUNYAparticipant · ES
TECHNISCHE UNIVERSITAET MUENCHENparticipant · DE
ALPHA CONSULTANTS S.R.L.participant · IT
DRAXIS ENVIRONMENTAL SAparticipant · EL
UNIVERSITAT POLITECNICA DE CATALUNYAparticipant · ES
STICHTING WAGENINGEN RESEARCHparticipant · NL

How to reach the team

ACORDE TECHNOLOGIES SA (Spain) — contact through SciTransfer for a warm introduction to the project coordinator

Order a report on this consortium See ACORDE TECHNOLOGIES SA profile →

Next steps

Talk to the team behind this work.

Want to explore licensing the patented positioning technology or integrating the open-source receiver into your product line? SciTransfer can connect you directly with the AUDITOR team and provide a tailored technology brief.

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