Petri Kärhä
Principal University Lecturer
T410 Dept. Electrical Engineering and Automation
Principal University Lecturer
Full researcher profile
https://research.aalto.fi/...
Research groups
- Metrology Research Institute, Vanhempi yliopistonlehtori
Publications
Evaluation of on-site calibration procedures for SKYNET Prede POM sun-sky photometers
Monica Campanelli, Victor Estellés, Gaurav Kumar, Teruyuki Nakajima, Masahiro Momoi, Julian Gröbner, Stelios Kazadzis, Natalia Kouremeti, Angelos Karanikolas, Africa Barreto, Saulius Nevas, Kerstin Schwind, Philipp Schneider, Iiro Harju, Petri Kärhä, Henri Diémoz, Rei Kudo, Akihiro Uchiyama, Akihiro Yamazaki, Anna Maria Iannarelli, Gabriele Mevi, Annalisa Di Bernardino, Stefano Casadio
2024
Atmospheric Measurement Techniques
Differential Spectral Responsivity of Solar Cells Measured with an LED Based Experimental Setup
Afsaneh Eghbali Yeldagermani, Erkki Ikonen, Petri Karha
2024
2023 Middle East and North Africa Solar Conference, MENA-SC 2023 - Proceedings
Infrared-A to improve mood: an exploratory study of water-filtered infrared-A (wIRA) exposure
Iina Maria Häggqvist, Petri Kärhä, Hannu Kautiainen, Erna Snellman, Rafael Pasternack, Timo Partonen
2024
Photochemical and photobiological sciences
Spectral analysis of deviations from key comparison reference values
Kinza Maham, Vili Kosonen, Juha Peltoniemi, Petri Kärhä, Erkki Ikonen
2024
Metrologia
Digital implementations for determination of temporal light artefacts of LED luminaires
V. Mantela, R. Nordlund, J. Askola, P. Kärhä, E. Ikonen
2024
Lighting Research and Technology
Improvement of temporal light artefact effects in commercial LED lamps
V. Mantela, R. Nordlund, J. Askola, P. Kärhä, P. Dekker, E. Ikonen
2024
Lighting Research and Technology
Spectral Mismatch Uncertainty Estimation in Solar Cell Calibration Using Monte Carlo Simulation
Kinza Maham, Petri Karha, Erkki Ikonen
2023
IEEE Journal of Photovoltaics
Effect of adaptive control on the LED street luminaire lifetime and on the lifecycle costs of a lighting installation
J. Askola, P. Kärhä, H. Baumgartner, S. Porrasmaa, E. Ikonen
2022
Lighting Research and Technology
Improvement In The Temporal Light Artefact Metrics Of Commercial Led Lamps
Erkki Ikonen, Roope Nordlund, Ville Mantela, Janne Askola, Petri Kärhä
2022
In-Space Radiometric Calibration of Nanosatellite Camera
Olli Knuuttila, Esa Kallio, Noora Partamies, Mikko Syrjäsuo, Kirsti Kauristie, Viktoria Sofieva, Ari-Matti Harri, Antti Kestilä, Jarmo Kivekäs, Petri Koskimaa, Jouni Rynö, Johanna Tamminen, Petri Kärhä, Juha-Matti Lukkari, Arno Alho, Tuija Pulkkinen
2022
JOURNAL OF SMALL SATELLITES