Classic target decomposition methods use scattering space in their approaches. However, the goal for this project is to investigate whether a different approach to retrieve accurate and reliable estimates on the earth composition is possible when using the feature space with covariance matrix-based features. The approach consists of four steps. Generating multidimensional feature space data from ...

Oppgaven omhandler målemetoder og problemstillinger i forhold til temperaturmåling på optiske bølgeledere

This paper proposes a novel unsupervised, non-Gaussian, and contextual segmentation method that combines an advanced statistical distribution with spatial contextual informa-tion for multilook polarimetric synthetic aperture radar (PolSAR)data. This extends on previous studies that have shown the added value of both non-Gaussian modeling and contextual smoothing individually or for intensity channels ...

We have used a numerical model to calculate the flow velocities of six minor ion species, using two different background models for the fast solar wind, one with a slow expansion, and one with a very rapidly expanding geometry. By comparing the flow velocity of the minor ions and the protons, we have investigated the degree of coupling between minor ions and the background solar wind in the solar ...

This thesis elucidates thermal energy transfer at Elkem Salten Verk, and tries to determine the most favorable approach on how to provide indoor heating by thermal energy for a building at the plant site. My goal for this thesis was to create some suggestions, regarding the type of heating systems and their energy rates in order to provide enough heating power for Miljøbygget.

Coupling between the ionized and neutral atmosphere through particle collisions allows an indirect study of the neutral atmosphere through measurements of ionospheric plasma parameters. We estimate the neutral density of the upper thermosphere above ~250 km with the European Incoherent Scatter Svalbard Radar (ESR) using the year-long operations of the International Polar Year from March 2007 to ...

Current machine learning models have shown high efficiency in solving a wide variety of real-world problems. However, their black box character poses a major challenge for the comprehensibility and traceability of the underlying decision-making strategies. As a remedy, numerous post-hoc and self-explanation methods have been developed to interpret the models’ behavior. Those methods, in addition, ...

The Einstein Cross, Q 2237+0305, has been photometrically observed in four bands on two successive nights at NOT (La Palma, Spain) in October 1995. Three independent algorithms have been used to analyse the data: an automatic image decomposition technique, a CLEAN algorithm and the new MCS deconvolution code. The photometric and astrometric results obtained with the three methods are presented. ...

I denne oppgaven ser vi nærmere på fenomenet tidsreversert fokusering som kan benyttes til å fokusere et signal i tid og rom. Mulighetene for tidsreversering er mange og prinsippet kan benyttes generelt ved overføring av både akustiske, elektromagnetiske og andre bølgeformer, der det er liten dempning av signalet under overføringen. I korthet går tidsreversering ut på å få en bølge som går fra et ...