Zobrazeno 1 - 10
of 177
pro vyhledávání: '"KAASALAINEN, Mikko"'
Publikováno v:
Silva Fennica, Vol 50, Iss 1 (2016)
We introduce a general procedure to match a stochastic functional-structural tree model (here LIGNUM augmented with stochastic rules) with real tree structures depicted by quantitative structure models (QSMs) based on terrestrial laser scanning. The
Externí odkaz:
https://doaj.org/article/50ef9bc1a8444d32a273650d110d9909
Autor:
Krooks, Anssi, Kaasalainen, Sanna, Kankare, Ville, Joensuu, Marianna, Raumonen, Pasi, Kaasalainen, Mikko
Publikováno v:
Silva Fennica, Vol 48, Iss 2 (2014)
We apply quantitative structure modelling to produce detailed information on branch-level metrics in trees. Particularly we are interested in the branch size distribution, by which we mean the total volume of branch parts distributed over the diamete
Externí odkaz:
https://doaj.org/article/fe16f6e6a4544a56981974416c2c8c94
Autor:
Kaasalainen, Mikko, Durech, Josef
We present a review of the problem of asteroid shape and spin reconstruction from generalised projections; i.e., from lightcurves, disk-resolved images, occultation silhouettes, radar range-Doppler data, and interferometry. The aim of this text is to
Externí odkaz:
http://arxiv.org/abs/2005.09947
Autor:
Kaasalainen, Mikko, Durech, Josef
Time-resolved photometry of asteroids can be used for shape and spin reconstruction. If the number of measurements per asteroid is not sufficient to create a model, the whole data set can be used to reconstruct the distribution of shape elongations a
Externí odkaz:
http://arxiv.org/abs/2005.06200
Autor:
Nortunen, Hari, Kaasalainen, Mikko
Publikováno v:
A&A 608, A91 (2017)
Many asteroid databases with lightcurve brightness measurements (e.g. WISE, Pan-STARRS1) contain enormous amounts of data for asteroid shape and spin modelling. While lightcurve inversion is not plausible for individual targets with scarce data, it i
Externí odkaz:
http://arxiv.org/abs/1710.06397
Autor:
Takala, Mika, Bambach, Patrick, Deller, Jakob, Vilenus, Esa, Wittig, Manfred, Lentz, Harald, Braun, Hans Martin, Kaasalainen, Mikko, Pursiainen, Sampsa
This study aims at advancing mathematical and computational techniques for reconstructing the interior structure of a near earth asteroid (NEA) via Computed Radar Tomography (CRT). We introduce a far-field model for full-wave CRT and validate it nume
Externí odkaz:
http://arxiv.org/abs/1709.04309
Publikováno v:
A&A 607, A117 (2017)
We present shape models and volume estimates of twenty asteroids based on relative photometry and adaptive optics images. We discuss error estimation and the effects of myopic deconvolution on shape solutions. For further analysis of the information
Externí odkaz:
http://arxiv.org/abs/1708.05191
Autor:
Hanus, Josef, Viikinkoski, Matti, Marchis, Franck, Durech, Josef, Kaasalainen, Mikko, Delbo', Marco, Herald, David, Frappa, Eric, Hayamizu, Tsutomu, Kerr, S., Preston, Steve, Timerson, Brad, Dunham, David, Talbot, John
Publikováno v:
A&A 601, A114 (2017)
Disk-integrated photometric data of asteroids do not contain accurate information on shape details or size scale. Additional data such as disk-resolved images or stellar occultation measurements further constrain asteroid shapes and allow size estima
Externí odkaz:
http://arxiv.org/abs/1702.01996
Publikováno v:
A&A 599, A36 (2017)
Asteroid (130) Elektra belongs to one of the six known triple asteroids in the main belt, so its mass has been reliably determined. We aim to use all available disk-resolved images of (130) Elektra obtained by the SPHERE instrument at VLT and by the
Externí odkaz:
http://arxiv.org/abs/1611.03632
Autor:
Cibulková, Helena, Ďurech, Josef, Vokrouhlický, David, Kaasalainen, Mikko, Oszkiewicz, Dagmara A.
Publikováno v:
A&A 596, A57 (2016)
Context: Large all-sky surveys provide us with a lot of photometric data that are sparse in time (typically few measurements per night) and can be potentially used for the determination of shapes and rotational states of asteroids. The method which i
Externí odkaz:
http://arxiv.org/abs/1610.02790