The Medusa gamma-ray spectrometers have become the standard for drone-borne mapping soil and geology. For a successful application of these gamma-ray spectrometers, it is important that the sensor gives absolute values concentrations of the radionuclides in the soil.
Our most recent research paper describes how drone-borne gamma-ray can be corrected for the height of measurement. The article can be downloaded here.
The research work is part of a Phd project at Medusa Radiometrics and University Medical Centre Groningen and is subsidized by the European Regional Development Fund (EFRD 2014–2020).

How can you use a gamma-ray spectrometer under a drone?
The Medusa gamma-ray spectrometers have become the standard for drone-borne mapping soil and geology. For a successful application of these gamma-ray spectrometers, it is important that the sensor gives absolute values concentrations of the radionuclides in the soil.
Our most recent research paper describes how drone-borne gamma-ray can be corrected for the height of measurement. The article can be downloaded here.
The research work is part of a Phd project at Medusa Radiometrics and University Medical Centre Groningen and is subsidized by the European Regional Development Fund (EFRD 2014–2020).
A drone-borne gamma spectrometer with extremely high resolution
Medusa’s gamma-ray spectrometers are commonly used for drone-borne mapping of soil properties and geology and our sensors have proven their application. But what if a client needs to map specific isotopes. That’s why we built our highest resolution gamma-spectrometer ever!
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Improved new version of MS-1200
Medusa’s gamma spectrometers are used worldwide to map soil and sediments. Due to the rapidly growing demand for sediment mapping surveys, Medusa Radiometrics invests in making the underwater gamma-ray spectrometers more manageable and more efficient. The sensor will be made autonomous, and we will develop technology to allow the sensor to communicate wirelessly with the vessel. The European Regional Development Fund (ERDF) funds the research.
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U.S. Department of Defense contract to demonstrate MS-1200 sub for the in situ mapping of contaminated sediments
Technology expected to offer significant cost, safety and environmental benefits pre- and post-remediation of contaminated sites.
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The Medusa Institute is here!
As a high tech company, research and development is at the very heart of what we do. Over the past 20 years, we have invested heavily in radiometric research and product development – investments in projects that almost always include collaborations with research institutes, universities and colleague companies. In all these R&D collaborations, sharing knowledge has been the most important key to success! We love the “European” approach of not being afraid of sharing technological insights with our business partners or even with our competitors – at the end we all benefit! Read more
Towards Drone-borne Gammaray Surveing
Recently we finished a first series of flight tests of our “drone-borne” gamma-ray sensor. To answer to the increasing demand for drone-borne sensing systems, we decided almost a year ago, to start the development of a lightweight and rugged version of our gamma-ray detection systems; the “drone detector”. The aim of the project is to create a low-weight, low power and fully self-contained sensor system fit to be used underneath a “standard” unmanned areal vehicle (UAV). A challenge that – as we found – not only involves a fully new detector design, both in hardware as in software, but also a careful look at the drone specifics as we found out the hard way when our first prototype crashed while flying…
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University Samples More Accurately with Gamma-Ray Spectrometer
How do you increase the accuracy of taking samples in the field? Dutch Wageningen University & Research uses Medusa’s gamma-ray spectrometer to more accurately define its sample locations and thus reducing the risk of false sampling.
Underwater mapping of sediments
In recent years, laws and regulations in the field of ecology became more strict due to public pressure. Therefore, the discharge of fines during dredging and land reclamation works and its impact on seafloor habitats is an important aspect in environmental impact assessments.
Multi sensor system for farmland in Spain
To increase the (financial) yield of Spanish farmers on low-yielding rainfed soils, a EU LIFE+ project ‘Crops for better soil’ was initiated. The aim was to improve the soil itself by applying several agronomic measures and by better understanding the soil. To this purpose Medusa developed an efficient and effective soil sensing system on a […]
Gamma-Ray spectrometer for exploration and mining
The use of airborne gamma-ray measurements has a long-standing tradition in geophysical research. The airborne measurement of gamma radiation emitted by naturally occurring elements like potassium (40K), thorium (232Th) and uranium (238U) is a common method in exploration.