Company

Harp Technologies is a privately-owned SME company with approx. 2.4 M€ in turnover (2020). We provide technology and R&D services in RF, microwave, and millimetre-wave engineering. Complementary R&D services in embedded electronics, software, and thermo-mechanical design are also provided. Our activities are organised into four business lines: Microwave Sensors, Microwave Components, Signal Processing, and Electromagnetics.  

Harp Technologies has deep roots in the national and international RF and microwave technology communities and has a strong team of experienced design engineers. Our work is characterised by innovativeness, flexibility, and high quality, as well as schedule and cost control.  

The company premises are in the Innopoli 2 business park in Espoo, Finland, in the Otaniemi Technology area, 10 km from the centre of Helsinki and only five minutes’ walk from the nearest metro station (Aalto yliopisto – Aalto universitetet). Otaniemi is the largest technology, innovation, and business hub in Northern Europe. 

OUR SLOGAN IS BEYOND LIMITS™, WHICH REFLECTS OUR ABILITY TO THINK OUTSIDE THE BOX AND OUR DETERMINATION TO SOLVE EVEN THE TOUGHEST CHALLENGES.

The history of the company 

The value for the customer   

Our mission

Our values

Publications    

  • J. LahtinenJ. Uusitalo, H. Servomaa, S. SaloH. Nguyen, J. Pihlflyckt, K. Havia, M. Vaaja, K. Rautiainen, J. Praks, J. Lemmetyinen “Refurbishment of the HUTRAD system,” Proc. 16th Specialist Meeting on Microwave Radiometry and Remote Sensing for the Environment (MicroRad 2020), Florence, Italy, 2020. 
  • J. Ruiz, R. Vehmas, J. Lemmetyinen, J. UusitaloJ. Lahtinen, K. Lehtinen, A. Kontu, K. Rautiainen, R. Tarvainen, J. Pulliainen, and J. Praks, “SodSAR: A Tower-Based 1–10 GHz SAR System for Snow, Soil and Vegetation Studies,” Sensors, vol. 20, no. 22, 6702, 2020. 
  • R. Oliva, M. Martin–Neira, I. Corbella, J. Closa, A. Zurita, F. Cabot, A. Khazaal, P. RichaumeJ. Kainulainen, J. Barbosa, G. Lopes, J. Tenerelli, R. Diez-García, V. González–Gambau, and R. Crapolicchio, “SMOS Third Mission Reprocessing after 10 Years in Orbit,” Remote Sensing, vol. 12, 1645, 2020. 
  • J. Kainulainen, S. Salo, J. Lahtinen, G. Molera, J. Seppänen, J. Praks, T. Hakala, Y. Chen, J. Hyyppä, M. Unwin, P. Jales, G. Ressler, T. Casal, and J. Rosello, “Airborne wind vector scatterometer for sea surface measurements,” IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, vol. 12, no 7, pp. 2470-2476, July 2019. 
  • J. Lahtinen, S. S. Kristensen, A. Kovanen, K. Lehtinen, J. Uusitalo, S. S. Søbjærg, N. Skou, and S. D’Addio, ”Real-time RFI Processor for future spaceborne microwave radiometers,” IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, vol. 12, no 6, pp. 1658-1669, June 2019. 
  • J. Kainulainen, S. Salo, J. Lahtinen, G. Molera, J. Seppänen, J. Praks, T. Hakala, Y. Chen, J. Hyyppä, M. Unwin, P. Jales, G. Ressler, T. Casal, and J. Rosello, “Fully polarimetric airborne wind vector scatterometer to support space-borne GNSS-R measurements,” IEEE 2018 International Geoscience and Remote Sensing Symposium Proceedings, pp. 2011-2014. Valencia, Spain, 2018. 
  • M. Martin-Neira, M. Suess, R. Oliva, J. Fauste, I. Corbella, F. Torres, N. Duffo, I. Durán, J. Kainulainen, J. Closa, A. Zurita, F. Cabot, A. Khazaal, E. Anterrieu, J. Barbosa, G. Lopes, J. Tenerelli, R. Díez-García, A. Turiel, V. González-Gambau, and R. Crapolicchio, “SMOS instrument performance after more than 8 years in orbit and lessons learnt for future L-band missions,” IEEE 2018 International Geoscience and Remote Sensing Symposium Proceedings, pp. 1438-1440. Valencia, Spain, 2018. 
  • E. Cardellach, J. Wickert, R. Baggen, J. Benito, A. Camps, N. Catarino, B. Chapron, A. Dielacher, F. Fabra, G. Flato, H. Fragner, C. Gabarró, C. Gommenginger, C. Haas, S. Healy, M. Hernandez-Pajares, P. Høeg, A. JäggiJ. Kainulainen, S. A. Khan, N. M. K. Lemke, W. Li, S. V. Nghiem, N. Pierdicca, M. Portabella, K. Rautiainen, A. Rius, I. Sasgen, M. Semmling, C. K. Shum, F. Soulat, A. K. Steiner, S. Tailhades, M. Thomas, R. Vilaseca, and C. Zuffada, “GNSS Transpolar Earth Reflectometry exploriNg system (G-TERN): Mission concept,” IEEE Access, vol. 6, pp. 13980-14018, 2018. 
  • J. Lahtinen, A. Kovanen, K. Lehtinen, S. S. Kristensen, S. S. Søbjærg, N. Skou, and S. D’Addio, ”Real-time RFI Processor for the next generation satellite radiometers,” Proc. 15th Specialist Meeting on Microwave Radiometry and Remote Sensing of the Environment (MicroRad 2018), pp. 1-6. Cambridge, MA, USA, 2018. 
  • S. S. Kristensen, S. S. Søbjærg, N. SkouJ. Lahtinen, J. Uusitalo, and S. D’Addio, ”Measured performance of improved cross frequency algorithm for detection of RFI from DTV,” Proc. 15th Specialist Meeting on Microwave Radiometry and Remote Sensing of the Environment (MicroRad 2018, pp. 1-5. Cambridge, MA, USA, 2018. 
  • J. Lahtinen, J. Uusitalo, T. Ruokokoski, and J. Ruoskanen, “Comparison of polarimetric algorithm with other algorithms in detecting Radio Frequency Interference,” IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, vol. 10, no 7, pp. 3087-3095, July 2017. 
  • J. Lahtinen and M. T. Hallikainen, “Retardation plate for the calibration of a fully polarimetric radiometer: Determination of characteristics,” IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, vol. 10, no 7, pp. 3046-3054, July 2017. 
  • M. Martín-Neira, R. Oliva, I. Corbella, F. Torres, N. Duffo, I. Durán, J. Kainulainen, J. Closa, A. Zurita, F. Cabot, A. Khazaal, E. Anterrieu, J. Barbosa, G. Lopes, J. Tenerelli, R. Díez-García, J. Fauste, V. González-Gambau, A. Turiel, S. Delwart, R. Crapolicchio, M. Suess, S. Mecklenburg, M. Drusch, R. Sabia, E. Daganzo-Eusebio, Y. Kerr, and N. Reul, ”Lessons learnt from SMOS after 7 years in orbit,” IEEE 2017 International Geoscience and Remote Sensing Symposium Proceedings, pp. 255-258. Fort Worth, TX, USA, 2017. 
  • R. Oliva, J. Tenerelli, M. Martín-Neira, I. Corbella, J. Closa, and J. Kainulainen, ”Data analytics to improve SMOS calibration,” IEEE 2017 International Geoscience and Remote Sensing Symposium Proceedings, pp. 707-710. Fort Worth, TX, USA, 2017. 
  • N. Skou, S. S. Kristensen, S. S. SøbjærgA. Kovanen and J. Lahtinen, ”Simulated and measured performance of a real-time processor for RFI detection and mitigation on-board a spaceborne microwave radiometers,” IEEE 2017 International Geoscience and Remote Sensing Symposium Proceedings, pp. 1247-1250. Fort Worth, TX, USA, 2017. 
  • J. SeppänenJ. Kainulainen, J. Heiskanen, J. Praks, and M. Hallikainen, “Measurements of boreal coniferous forest soil and humus with an airborne radiometer,” IEEE Journal of Selected Topics in Applied Earth Observation and Remote Sensing, Vol. 9, No. 7, pp. 3219-3228, July 2016. 
  • M. Martín-Neira, R. Oliva, I. Corbella, F. Torres, N. Duffo, I. Durán,  J. Kainulainen, J. Closa, A. Zurita, F. Cabot, A. Khazaal, E. Anterrieu, J. Barbosa, G. Lopes, J. Tenerelli, R. Díez-García, J. Fauste, F. Martín-Porqueras, V. González, A. Turiel, S. Delwart, R. Crapolicchio, and M. Suess, “SMOS instrument performance and calibration after six years in orbit,” Remote Sensing of Environment, Vol. 180, pp. 19-39, July 2016. 
  • M. Martín-Neira, R. Oliva, I. Corbella, F. Torres, N. Duffo, I. Duran, J. Kainulainen, J. Closa, A. Zurita, F. Cabot, A. Khazaal, E. Anterrieu, J. Barbosa, G. Lopes, J. Tenerelli, R. Diez-Garcia, J. Fauste, V. Gonzalez-Gambau, A. Turiel, S. Delwart, R. Crapolicchio, and M. Suess, “SMOS instrument performance and calibration after 6 years in orbit,” IEEE 2016 International Geoscience and Remote Sensing Symposium Proceedings, pp. 2040-2042. Beijing, China, 2016. 
  • H. Nguyen, T. Ruokokoski, P. Piironen, and J. Lahtinen, ”Higher order ferrite junction switch for radiometer calibration,” Proc. 2016 Global Symposium on Millimeter Waves (GSMM) & ESA Workshop on Millimetre-Wave Technology and Applications, pp. 1-4. Espoo, Finland, 2016. 
  • J. Lahtinen, J. Uusitalo, T. Ruokokoski, and J. Ruoskanen, ”Evaluation and comparison of RFI detection algorithms,” Proc. 14th Specialist Meeting on Microwave Radiometry and Remote Sensing of the Environment (MicroRad 2016), pp. 62-67. Espoo, Finland, 2016. 
  • J. Lahtinen and M. Hallikainen, “Fully polarimetric radiometer calibration: Determining retardation plate’s phase shift,” Proc. 14th Specialist Meeting on Microwave Radiometry and Remote Sensing of the Environment (MicroRad 2016), pp. 175-180, Espoo, Finland, 2016.  
  • N. Skou, S. S. Kristensen, A. Kovanen, and J. Lahtinen, ”Performance of a processor for on-board RFI detection and mitigation in MetOp-SG radiometers,” Proc. 14th Specialist Meeting on Microwave Radiometry and Remote Sensing of the Environment (MicroRad 2016), pp. 58-61. Espoo, Finland, 2016. 
  • Colliander, E. Dinnat, D. Le Vine, C. S. Chae, J. Kainulainen, “Assessing long term stability of SMOS zero-baseline antenna temperature using the Aquarius antenna temperature simulator,” IEEE Geoscience and Remote Sensing Letters, Vol. 12, No. 8, pp. 1680-1684, Dec. 2015. 
  • N. Skou, S. S. Kristensen, A. Kovanen, J. Lahtinen, “Processor breadboard for on-board RFI detection and mitigation in MetOp-SG radiometers,” IEEE 2015 International Geoscience and Remote Sensing Symposium Proceedings, pp. 1445-1448. Milan, Italy, 2015. 
  • J. Kainulainen, J. Uusitalo, M. Hansen, M. Pedersen, J. Lahtinen, M. Martin-Neira, “Assessment of radiometer concepts for advanced SST/OVW mission,” Proc. Advanced RF Sensors and Remote Sensing Instruments 2014 & Ka-band Earth Observation Radar Mission 2014. Noordwijk, the Netherlands, 2014.  
  • Colliander, C. S. Chae, J. Kainulainen, E. Dinnat, F. Torres, I. Corbella, R. Oliva, and M. Martin-Neira, “Advances in calibration of the SMOS zero-baseline radiometers,” Proc. 13th Specialist Meeting on Microwave Radiometry and Remote Sensing of the Environment (MicroRad 2014) 2014, pp. 201-204. Pasadena, CA, USA, 2014. 
  • N. Skou, S. S. Kristensen, A. Kovanen, J. Lahtinen, “Digital processor breadboard for RFI detection and mitigation in spaceborne radiometers,” IEEE 2014 International Geoscience and Remote Sensing Symposium Proceedings, pp. 211-214, Québec City, Canada, 2014. 
  • J. RuoskanenT. Ruokokoski, and J. Lahtinen, “Enhanced detection of weak radar pulses using kurtosis statistics,” Proc. IET International Conference on Radar Systems (Radar 2012), pp. 1-5. Glasgow, UK, 2012. 
  • N. Skou, S. S. Kristensen, T. Ruokokoski, J. Lahtinen, “On-board digital RFI and polarimetry processor for future spaceborne radiometer systems,” IEEE 2012 International Geoscience and Remote Sensing Symposium Proceedings, pp. 3423 – 3426. Munich, Germany, 2012. 
  • G. Alberti, A. Memoli, G. Pica, M. R. SantovitoB.BuralliJ.E.Charlton, S. Varchetta, M. Brandt, J. Lahtinen, S. D’addio, and V. Kangas, “Analysis of the performance of the Microwave Imager radiometer for MetOp Second Generation,” Proc. 2012 12th Specialist Meeting on Microwave Radiometry and Remote Sensing of the Environment (MicroRad 2012), pp. 1-4. Frascati, Italy, 2012. 
  • J. Lahtinen, T. Ruokokoski, S. S. Kristensen, N. Skou, “Intelligent digital back-end for real-time RFI detection and mitigation in microwave radiometry,” Proc. Third Workshop on Advanced RF Sensors and Remote Sensing Instruments (ARSI). Noordwijk, The Netherlands, 2011. 
  • J.-C. Orlhac, H. Roquet, A. Bentamy, C. Prigent, F. Aires, K. Atkinson, G. Sykes, J. Lahtinen, N. Skou, E. Anterrieu, and C. Donlon, “High Resolution Microwave Wind and Temperature (MICROWAT) Mission Concept Study,” Proc. Third Workshop on Advanced RF Sensors and Remote Sensing Instruments (ARSI). Noordwijk, The Netherlands, 2011. 
  • J. Kainulainen, J. Lemmetyinen, K. Rautiainen, A. CollianderJ. Uusitalo, and J. Lahtinen, “Error propagation in calibration networks of synthetic aperture radiometers,” IEEE Transactions on Geoscience and Remote Sensing, vol. 47, no 9, pp. 3140-3150, Sept. 2009. 
  • J. Lahtinen, P. Piironen, A. Colliander, and M. Martin-Neira, “Improved Receiver Architecture for Future L-Band Radiometer Missions,” IEEE 2007 International Geoscience and Remote Sensing Symposium Proceedings, pp. 5247-5250. Barcelona, Spain, 2007.

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