Composition of celestial bodies revealed by their spectrum
The space industry is currently undergoing a major transformation, with compact spaceborne hyperspectral imagers playing a major role.
Hyperspectral imagers capture the image in a number of separate wavelengths of light, from visible to infrared light. This establishes a spectrum for each individual pixel seen in the image, providing information that can be used to characterise an object’s properties, such as its scope within the image or its composition. In space, such devices can be used in observing Earth or other solar system bodies.
“Finland, especially VTT, has been pioneering the development of compact hyperspectral imaging technology,” explains Docent Tomas Kohout, coordinator and principal investigator of the research consortium from the University of Helsinki.
Hardware and software for nanosatellites through Finnish efforts
Finnish first-generation miniaturised hyperspectral imagers are currently orbiting Earth in the Aalto-1 and Reaktor Hello World nanosatellites.
The researchers of the new consortium are now developing a new generation of miniaturised hyperspectral imagers and advanced methods for processing the data they collect, with the aim of developing techniques that make Earth and planetary observations increasingly autonomous.
“In this project, we are developing both hardware and software for nanosatellites. The aim is to reduce the costs of new-era space operations,” Kohout adds.
In the three-year project ‘Smart hyperspectral imaging solutions for a new era in Earth and planetary observations’ (Smart-HSI), the University of Helsinki is focusing on planetary missions, the Finnish Geospatial Research Institute on Earth observation, VTT on hyperspectral imaging hardware development, and the University of Jyväskylä on the optimisation of hyperspectral data processing.
The overall budget for the Smart-HSI project, which will be launched in January 2021, is €1.7 million.
Further information:
Tomas Kohout, docent, University of Helsinki, [email protected], +358 2941 51008
Eija Honkavaara, professor, Finnish Geospatial Research Institute, [email protected], +358 2953 14716
Ilkka Pölönen, docent, University of Jyväskylä, Faculty of Information Technology, [email protected], +358 40 024 8140
Harri Ojanen, senior scientist, VTT Technical Research Centre of Finland Ltd, [email protected], +358 50 482 1354
