Zobrazeno 1 - 10
of 70
pro vyhledávání: '"Jarkko Koskinen"'
Autor:
Paavo Rouhiainen, Jarkko Koskinen, Veikko Saaranen, Juha Hyyppä, Mika Karjalainen, Kirsi Karila
Publikováno v:
ISPRS International Journal of Geo-Information, Vol 2, Iss 3, Pp 797-816 (2013)
It is well known that the most accurate method to detect changes of height is the geodetic precise leveling method. Due to the high demand work and time needed for precise leveling alternative methods are studied to obtain high quality height informa
Externí odkaz:
https://doaj.org/article/49c7becbf07446aca360051d1dd6a467
Autor:
Hannu Hyyppä, Mikko Vastaranta, Markus Holopainen, Antero Kukko, Harri Kaartinen, Anttoni Jaakkola, Matti Vaaja, Jarkko Koskinen, Petteri Alho, Xiaowei Yu, Juha Hyyppä
Publikováno v:
Remote Sensing, Vol 4, Iss 5, Pp 1190-1207 (2012)
We present two improvements for laser-based forest inventory. The first improvement is based on using last pulse data for tree detection. When trees overlap, the surface model between the trees corresponding to the first pulse stays high, whereas the
Externí odkaz:
https://doaj.org/article/ac252971d5a34c2da9c678e9f5929228
Autor:
Bojan Bojkov, Jouni Pulliainen, J.-P. Karna, Kari Luojus, Jarkko Koskinen, Matias Takala, Chris Derksen, Juha Lemmetyinen
Publikováno v:
Remote Sensing of Environment. 115:3517-3529
The key variable describing global seasonal snow cover is snow water equivalent (SWE). However, reliable information on the hemispheric scale variability of SWE is lacking because traditional methods such as interpolation of ground-based measurements
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5c336d72159c7d3a415e68f6b1cb21bb
https://doi.org/10.1016/j.rse.2011.08.014
https://doi.org/10.1016/j.rse.2011.08.014
Publikováno v:
IEEE Transactions on Geoscience and Remote Sensing. 49:3047-3058
Motivated by the use of a Ku/Ka-band radar in the Global Precipitation Measurement core satellite due to launch in 2013, we have studied the use of techniques to simulate radar observations of snowfall at these bands from data at C/W-bands by using s
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2da805d66759c1fa5feef77f8199883c
https://doi.org/10.1109/tgrs.2011.2117432
https://doi.org/10.1109/tgrs.2011.2117432
Autor:
Minna Aurela, Jarkko Koskinen, Markku Kulmala, Hilkka Timonen, Pasi Aalto, Sanna Saarikoski, Karri Saarnio, Risto Hillamo, Jaakko Kukkonen, Kimmo Teinilä, Timo Mäkelä, Mikhail Sofiev
Publikováno v:
Science of The Total Environment
A series of smoke plumes was detected in Helsinki, Finland, during a one-month-lasting period in August 2006. The smoke plumes originated from wildfires close to Finland, and they were short-term and had a high particulate matter (PM) concentration.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::95749e136b2a8fd446c01a77c3bac3d2
https://doi.org/10.1016/j.scitotenv.2010.03.010
https://doi.org/10.1016/j.scitotenv.2010.03.010
Publikováno v:
IEEE Transactions on Geoscience and Remote Sensing. 48:50-58
As spaceborne C-band synthetic aperture radar (SAR) observations are used for monitoring the snow cover during the spring melt period, temporal changes in backscatter from forest cover disturb the mapping of snow cover. This paper presents an analysi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::185a662ba9d00d91f92600b07cae0b8f
https://doi.org/10.1109/tgrs.2009.2024755
https://doi.org/10.1109/tgrs.2009.2024755
Publikováno v:
Journal of Applied Meteorology and Climatology. 48:1199-1216
Snow cover has a strong effect on the surface and lower atmosphere in NWP models. Because the progress of in situ observations has stalled, satellite-based snow analyses are becoming increasingly important. Currently, there exist several products tha
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a58612bbeaa5179cb6cb9e005bf9bba6
https://doi.org/10.1175/2008jamc2069.1
https://doi.org/10.1175/2008jamc2069.1
Publikováno v:
IEEE Transactions on Geoscience and Remote Sensing. 39:820-829
The capability of SAR interferometry has been previously demonstrated in various applications. In particular, the use of interferometric coherence has shown promising results in forest monitoring, however, mainly in discriminating forested and nonfor
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::09d1a27bbfd2671e1b888f555c10ec88
https://doi.org/10.1109/36.917903
https://doi.org/10.1109/36.917903
Autor:
J. Grandell, Sari Metsämäki, Jarkko Koskinen, Leena Matikainen, Sami Jänne, Martti Hallikainen
Publikováno v:
Remote Sensing of Environment. 69:16-29
In 1997 HUT, FEI, and FGI started a joint project that aims to develop an operational snow monitoring system in Finland. This project should apply both traditional methods (in situ measurements and hydrological models) and satellite-borne data (ERS-2
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8b9aa8355bd072e9f716954d54fb5217
https://doi.org/10.1016/s0034-4257(99)00010-3
https://doi.org/10.1016/s0034-4257(99)00010-3
Publikováno v:
IEEE Transactions on Geoscience and Remote Sensing. 37:2068-2079
A set of ERS-1 SAR images along with airborne non-imaging ranging scatterometer (HUTSCAT) measurements and in situ surveys has been obtained from the Sodankyla test site (center latitude=67.41/spl deg/N, center longitude=26.58/spl deg/E) in Northern
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7facfc0db8bbf1f9d20223d34ca83e66
https://doi.org/10.1109/36.774716
https://doi.org/10.1109/36.774716