• Monitoring soIl moisture and water-flooded areas
  • Using dedicated RPAS to measuring soil moisture using the GNSS Reflectometry
  • GNSS-R Technology
  • Detailed information for water managers
  • Soil moisture measurement for better irrigation management


Welcome to the website of the Mistrale project. The Mistrale project aims at providing soil moisture maps using GNSS Reflectometry, to decision makers in water management, like farmers and water boards and nature management. The project develops a prototype sensor embedded on a dedicated RPAS platform. Mistrale wants to integrate various technologies to reach commercialisation with these GNSS-R based soil moisture maps.

The Mistrale team

The Mistrale project team welcome you on our website.  

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The Mistrale Results

The Mistrale project has come to its final stage. The last reports and documentations will be finalised in the next weeks. Also this website is updated with the latest information. This website will be continued after the project and updated if there is new information. Keep visiting for news on Mistrale and on GNSS-R and soil moisture mapping. 

All publications of Mistrale can be found on our publications page: This includes the movies we made to explain the project and to show progress in the drone development, the leaflet, the papers, public reports and posters.

On the results page you can found the test flights done and other results of the project. 

Latest news
Mistrale in the News

The Mistrale Project is mentioned by the GSA at the Agriculture and Space Day held at the Belgian Natural Science Museum in Brussels. This results in an article in the prestigious INSIDE GNSS MAGAZINE.

At the event, GSA Director Carlo des Dorides highlighted some of the other projects under way: the Mistrale project that uses drones for soil water mapping, allowing farmers to optimize irrigation, saving costs and increasing yields; and GreenPatrol, that will result in early detection of pests and reduce productions losses and chemical use. These projects are run under the EU R&D program, Horizon2020.

Stabilized antenna for Mistrale

For the Mako drone a stabilized antenna gimble is designed and tested, see the video below. With this stabilized antenna the GNSS-R signals are always picked up straight under the drone, even in a turn.


Cyclone demonstration

Mistrale produced a video about the field demonstration of the cyclone. A fixed wing drone with the ability of vertical take-off and landing.


Measurement campaign December

Last Friday (9-12-2016) Mistrale held a measurement campaign. With excellent effort and team-work a lot of data is collected for the validation of the sensor and system. This will forms the basis for the next year measurements. Now all the data from the ground measurements and the different airborne sensors has to be compared.

Mid-Term Review (MTR)

On 7 July 2016 the consortium held its Mid-Term Review (MTR) in Toulouse hosted by our partner GET. This means that the project is now halve way. In the meeting the overall project status is reviewed.

8 July test flight

On the 8th of July the Mistrale consortium had a test day. The new prototype of the sensor was tested. The long range Boreal operated by L’Avion Jaune is used for that test flight. The Boreal is the RPAS that Mistrale will use in future for the larger Missions like research flights and mapping large areas for nature and water management. The boreal is able to flying for 10 hours while carrying the heavier Mistrale sensor of 1.5kg. 

The Boreal with clearly visible the down looking antenna

Learn about MISTRALE in 2 minutes

Mistrale produced a video explaining the GNSS-R concept and how it is deployed for soil moisture mapping.


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last update: 18-9-2018


This project has received funding from the European GNSS Agency under the European Union’s Horizon 2020 research and innovation programme under grant agreement no. 641606.