Dr. Andreas Colliander is a Research Scientist in the Water and Carbon Cycles Group of the Science Division. His primary field of research is the development of microwave remote sensing techniques. He is currently mainly focused on NASA’s SMAP (Soil Moisture Active and Passive) mission as a member of the science algorithm development team. His work addresses calibration and validation of the soil moisture and freeze/thaw products of the mission. He is also working on the airborne acquisition of active and passive microwave data in NASA’s CARVE (Carbon in Arctic Reservoirs Vulnerability Experiment) campaign. Additionally, he is funded by NASA to study calibration issues of European Space Agency’s SMOS (Soil Moisture and Ocean Salinity) mission.

Dr. Colliander is a Senior Member of the IEEE, and serves as a co-lead of the Microwave Radiometer Working Group of the IEEE Geoscience and Remote Sensing Society.

• Helsinki University of Technology
  • Ph.D., Electrical Engineering, (2007)
  • M.S., Electrical Engineering, (2002)

• Microwave remote sensing techniques, especially for hydrology applications.

• Jet Propulsion Laboratory, California Institute of Technology (2008-Present)
  • Research Scientist, Water and Carbon Cycles Group
• European Space Agency, Postdoctoral Research Fellow, European Space and Technology Research Centre, (2007-2008)
• Helsinki University of Technology, Research Scientist and Project Manager, Laboratory of Space Technology, (2001-2007)

1. Colliander, A., Chan, S., Kim, S., Das, N., Yueh, S., Cosh, M., Bindlish, R., Jackson, T., Njoku, E., "Long Term Analysis of PALS Soil Moisture Campaign Measurements for Global Soil Moisture Algorithm Development", Remote Sensing of Environment, vol. 121, pp. 309-322, 2012.
2. Colliander, A., McDonald, K., Zimmermann, R., Schroeder, R., Kimball, J., Njoku, E., "Application of QuikSCAT Backscatter to SMAP Validation Planning: Freeze/Thaw State over ALECTRA Sites in Alaska from 2000 to 2007", IEEE Transactions on Geoscience and Remote Sensing, vol. 50, no. 2, February 2012.
3. Colliander, A., Närhi, T., de Maagt, P., "Modeling and Analysis of Polarimetric Synthetic Aperture Interferometric Radiometers Using Noise Waves", IEEE Transactions on Geoscience and Remote Sensing, vol. 48, no. 9, September 2010.
4. Colliander, A., Martin-Neira, M., Closa, J., Benito, J., "Pre-Launch Estimation of Radiometric Resolution and Stability of SMOS Zero-Baseline Radiometer in Anechoic Chamber", IEEE Transactions on Geoscience and Remote Sensing, vol. 48, no. 3, March 2010.
5. Colliander, A., Corbella, I., Torres, F., "Correlation Denormalization in Interferometric or Polarimetric Radiometers: A Unified Approach", IEEE Transactions on Geoscience and Remote Sensing, vol. 47, no. 2, pp. 561-568, February 2009.
6. Colliander, A., Ylä-Oijala, P., "Electromagnetic Scattering from Rough Surface Using Single Integral Equation and Adaptive Integral Method", IEEE Transactions on Antennas and Propagation, vol. 55, no. 12, pp. 3639-3646, December 2007.
7. Colliander, A., Ruokokoski, L., Suomela, J., Veijola, K., Kettunen, J., Kangas, V., Aalto, A., Levander, A., Greus, H., Hallikainen, M., Lahtinen, J., "Development and Calibration of SMOS Reference Radiometer", IEEE Transactions on Geoscience and Remote Sensing, vol. 45, no. 7, pp. 1967-1977, July 2007.
8. Colliander, A., Lahtinen, J., Tauriainen, S., Pihlflyckt, J., Lemmetyinen, J., Hallikainen, M., "Sensitivity of Airborne 36.5-GHz Polarimetric Radiometer's Wind-Speed Measurement to Incidence Angle", IEEE Transactions on Geoscience and Remote Sensing, vol. 45, no. 7, pp. 2122-2129, July 2007.
9. Colliander, A., Kettunen, J., Hallikainen, M. T., "Calibration of End-to-end Phase Imbalance of Polarimetric Radiometers", IEEE Transactions on Geoscience and Remote Sensing, vol. 44, no. 10, pp. 2635-2641, Oct. 2006.
10. Colliander, A., Tauriainen, S., Auer, T., Kainulainen, J., Uusitalo, J., Toikka, M., Hallikainen, M., "MIRAS Reference Radiometer: A Fully Polarimetric Noise Injection Radiometer", IEEE Transactions on Geoscience and Remote Sensing, vol. 43, no. 5, pp. 1135-1143, May 2005.