Browsing Bergen Open Research Archive by Author "Sætre, Camilla"
Now showing items 1-9 of 9
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Analysis of multiple scattering errors in LISST-VSF volume scattering function measurements using Monte Carlo simulations and experimental data
Ugulen, Håvard Stavn; Sandven, Håkon; Hamre, Børge; Kristoffersen, Arne Skodvin; Sætre, Camilla (Journal article; Peer reviewed, 2021)A Monte Carlo algorithm has been developed to investigate the effects of multiple scattering on the volume scattering function measured by the LISST-VSF instrument. The developed algorithm is compared to experimental results ... -
Challenges, limitations, and measurement strategies to ensure data quality in deep-sea sensors
Skålvik, Astrid Marie; Sætre, Camilla; Frøysa, Kjell Eivind; Bjørk, Ranveig Nygaard; Tengberg, Anders (Journal article; Peer reviewed, 2023-04-06)In this paper we give an overview of factors and limitations impairing deep-sea sensor data, and we show how automatic tests can give sensors self-validation and self-diagnostic capabilities. This work is intended to lay ... -
Characterisation of Single Wind Turbine Wakes with Static and Scanning WINTWEX-W LiDAR Data
Kumer, Valerie-Marie; Reuder, Joachim; Svardal, Benny; Sætre, Camilla; Eecen, Peter (Peer reviewed; Journal article, 2015)With further development of LiDAR technology wake measurements by use of LiDAR became of common interest in the wind energy community. To study new measurement strategies of scanning and nacelle LiDARs, in combination with ... -
Directional wave measurements from navigational buoys
Sætre, Camilla; Tholo, Harald; Hovdenes, Jostein; Kocbach, Jan; Hageberg, Anne Ansnes; Klepsvik, Inge; Aarnes, Ole Johan; Furevik, Birgitte Rugaard; Magnusson, Anne Karin (Journal article; Peer reviewed, 2022)In-situ wave measurements are often required by marine industry standards and for verification of coastal wave forecasts. Obtaining wave measurements is costly and it would be advantageous to utilize existing platforms ... -
The effect of energetic electron precipitation on the nitric oxide density in the lower thermosphere
Sætre, Camilla (Doctoral thesis, 2007-02-09) -
Efficient Monte Carlo simulation reveals significant multiple scattering errors in underwater angular scattering measurements
Ugulen, Håvard Stavn; Sandven, Håkon; Hamre, Børge; Kristoffersen, Arne Skodvin; Sætre, Camilla (Journal article; Peer reviewed, 2022)Multiple scattering can severely affect the accuracy of optical instrumentation. Variance reduction methods have been implemented to improve a Monte Carlo model developed to simulate volume scattering functions measured ... -
Neural network approach for correction of multiple scattering errors in the LISST-VSF instrument
Ugulen, Håvard Stavn; Koestner, Daniel Warren; Sandven, Håkon Johan; Hamre, Børge; Kristoffersen, Arne Skodvin; Sætre, Camilla (Journal article; Peer reviewed, 2023)The LISST-VSF is a commercially developed instrument used to measure the volume scattering function (VSF) and attenuation coefficient in natural waters, which are important for remote sensing, environmental monitoring and ... -
Pixelwise immersion factor calibration for underwater hyperspectral imaging instruments
Liu, Hongbo; Summers, Natalie Maria; Chen, Yi-Chun; Løvås, Håvard Snefjellå; Johnsen, Geir; Koestner, Daniel Warren; Sætre, Camilla; Hamre, Børge (Journal article; Peer reviewed, 2024)In situ spectral reflectance initially captured at high spatial resolution with underwater hyperspectral imaging (UHI) is effective for classification and quantification in oceanic biogeochemical studies; however, the ... -
A smart ocean observation system for reliable real-time measurements
Sætre, Camilla; Skålvik, Astrid Marie; Frøysa, Kjell Eivind; Holstad, Marie Bueie (Chapter, 2023)This paper presents a research and innovation centre for a smart ocean observation system. The main goal of the centre, SFI Smart Ocean, is to enable sustainable ocean management through real-time measurements from autonomous ...