Department of Signal Processing and Acoustics

Petri Kärhä

Senior University Lecturer

Contact information

Postal address
Otakaari 5
Mobile phone
+358505968469
Full researcher profile
https://research.aalto.fi/...

Publications

Department of Signal Processing and Acoustics, Metrology Research Institute

Flat-field calibration method for hyperspectral frame cameras

Publishing year: 2019 Metrologia
Department of Signal Processing and Acoustics, Metrology Research Institute

Optical Characterization of III-V Multijunction Solar Cells for Temperature-Independent Band Gap Features

Publishing year: 2019 IEEE Journal of Photovoltaics
Department of Signal Processing and Acoustics, Metrology Research Institute

Uncertainty analysis of total ozone derived from direct solar irradiance spectra in the presence of unknown spectral deviations

Publishing year: 2018 Atmospheric Measurement Techniques
Department of Signal Processing and Acoustics, Metrology Research Institute

Relationships between junction temperature, electroluminescence spectrum and ageing of light-emitting diodes

Publishing year: 2018 Metrologia
Department of Signal Processing and Acoustics, Metrology Research Institute

LED based reference for wavelength and relative intensity

Publishing year: 2018 Journal of Physics: Conference Series
Department of Signal Processing and Acoustics, Metrology Research Institute

Key comparison CCPR-K1.a as an interlaboratory comparison of correlated color temperature

Publishing year: 2018 Journal of Physics: Conference Series
Department of Signal Processing and Acoustics, Metrology Research Institute

Out-of-Range Stray Light Characterization of Single-Monochromator Brewer Spectrophotometers

Publishing year: 2018 ATMOSPHERE: OCEAN
Department of Signal Processing and Acoustics, Metrology Research Institute

Method for estimating effects of unknown correlations in spectral irradiance data on uncertainties of spectrally integrated colorimetric quantities

Publishing year: 2017 Metrologia
Department of Signal Processing and Acoustics, Metrology Research Institute

Nonlinearity characterization of array spectroradiometers for the solar UV measurements

Publishing year: 2017 Applied Optics
Department of Signal Processing and Acoustics

UV exposure in artificial and natural weathering

Publishing year: 2017 Radiation Processes in the Atmosphere and Ocean, IRS 2016: Proceedings of the International Radiation Symposium (IRC/IAMAS)