Juha-Petri Kärnä
Juha-Petri Kärnä
Vahvistettu sähköpostiosoite verkkotunnuksessa ymparisto.fi
NimikeViittauksetVuosi
Estimating northern hemisphere snow water equivalent for climate research through assimilation of space-borne radiometer data and ground-based measurements
M Takala, K Luojus, J Pulliainen, C Derksen, J Lemmetyinen, JP Kärnä, ...
Remote Sensing of Environment 115 (12), 3517-3529, 2011
3012011
Efficient, dynamic, high contrast lensing with applications to imaging, illumination and projection
G Damberg, J Gregson, W Heidrich
US Patent App. 10/003,776, 2018
832018
Development of geophysical retrieval algorithms for the MIMR
J Pulliainen, JP Kärnä, M Hallikainen
IEEE Transactions on Geoscience and Remote Sensing 31 (1), 268-277, 1993
681993
A comparison of airborne microwave brightness temperatures and snowpack properties across the boreal forests of Finland and Western Canada
J Lemmetyinen, C Derksen, J Pulliainen, W Strapp, P Toose, A Walker, ...
IEEE Transactions on Geoscience and Remote Sensing 47 (3), 965-978, 2009
332009
IPSec processing
T Linnakangas, E Turtiainen, JP Karna, G Schultz, S Lindborg
US Patent App. 09/864,593, 2001
312001
Geometric correction of airborne imaging spectrometer data
K Mäkisara, JP Kärnä, A Lohi
International Geoscience and Remote Sensing Symposium, 1994. IGARSS'94. 2 …, 1994
21*1994
A system for geometric and radiometric correction of airborne imaging spectrometer data
K Mäkisara, A Lohi, JP Kärnä
International Geoscience and Remote Sensing Symposium, 1994. IGARSS'94. 3 …, 1994
21*1994
Correcting for the influence of frozen lakes in satellite microwave radiometer observations through application of a microwave emission model
J Lemmetyinen, A Kontu, JP Kärnä, J Vehviläinen, M Takala, J Pulliainen
Remote sensing of environment 115 (12), 3695-3706, 2011
182011
Operational Snow map production for whole Eurasia using microwave radiometer and ground-based observations
JP Kämä, J Lemmetyinen, M Hallikainen, P Lahtinen, J Pulliainen, ...
IEEE International Geoscience and Remote Sensing Symposium, 2007. IGARSS …, 2007
82007
Implementing hemispherical snow water equivalent product assimilating weather station observations and spaceborne microwave data
M Takala, K Luojus, J Pulliainen, C Derksen, J Lemmetyinen, JP Kärnä, ...
2011 IEEE International Geoscience and Remote Sensing Symposium (IGARSS …, 2011
42011
Assimilation of SAR data to operational hydrological runoff and snow melt forecasting model
JP Kärnä, J Pulliainen, M Huttunen, J Koskinen
Proceedings of the IEEE 2002 International Geoscience and Remote Sensing …, 2002
42002
Development of geophysical algorithms for a spaceborne microwave radiometer system
J Pulliainen, M Hallikainen, E Somersalo, V Jääskeläinen, JP Kärnä
IGARSS'91, 2369-2372, 1991
31991
Simulation software for a satellite-borne radiometer system
JP Kärnä, J Pulliainen, M Hallikainen
Proc. Int. Geoscience Remote Sensing Symp.(IGARSS), 2373-2376, 1991
31991
New approach for the global mapping of fractional snow coverage in boreal forest and tundra belt applicable to various sensors
S Metsämäki, OP Mattila, JP Kärnä, J Pulliainen, K Luojus
2010 IEEE International Geoscience and Remote Sensing Symposium, 1761-1764, 2010
22010
Development of sar-based snow-covered area estimation method for borel forest zone
K Luojus, J Pulliainen, S Metsamaki, G Molera, R Nakari, JP Karna, ...
IGARSS 2008-2008 IEEE International Geoscience and Remote Sensing Symposium …, 2008
22008
Evaluation of Routing Overlay Solution for a Hybrid Mobile ad hoc Network
J Latvakoski, T Aapaoja, J Kärnä
SECOND ERCIM WORKSHOP ON EMOBILITY, 25, 2008
22008
Automatic rectification and calibration program for RADARSAT ScanSAR images
JP Kärnä, N Patrikainen, J Pulliainen
Helsinki University of Technology, Laboratory of Space Technology, Report, 2007
22007
Development of techniques to retrieve Snow Covered Area (SCA) in boreal forests from space-borne microwave observations
K Luojus, JP Kärnä, M Hallikainen, J Pulliainen
IEEE International Conference on Geoscience and Remote Sensing Symposium …, 2006
22006
Feasibility of envisat data for the estimation of snow pack characteristics and areal fraction of snow in boreal forests
J Pulliainen, S Metsämäki, K Luojus, M Hallikainen, S Anttila, JP Kärnä, ...
Envisat & ERS Symposium 572, 2005
22005
Method and system for validating electronic transactions
JP Karna
US Patent App. 09/828,899, 2002
22002
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Artikkelit 1–20