Stefan Wijnholds

Function Researcher
Phone +31 (0)521 595 261
Email wijnholds at astron.nl
   

Expertise

 

 

- Calibration of phased array antennas
- Calibratability of radio telescopes
- System design
- Array signal processing
- Statistical signal processing
- Imaging

Publications

- Stefan J. Wijnholds, "Fish-Eye Observing with Phased Array Radio Telescopes", Ph.D. thesis, Delft University of Technology, Delft, The Netherlands, 2 March 2010

- Alle-Jan van der Veen and Stefan J. Wijnholds, "Signal Processing Tools for Radio Astronomy". In: Shuvra S. Bhattacharyya, Ed F. Deprettere, Rainer Leupers and Jarmo Takala (Eds.), "Handbook of Signal Processing Systems", Second edition, Springer, ISBN 978-1-4614-6858-5, pp421-464, 2013.

- Stefano Salvini and Stefan J. Wijnholds, "Fast gain calibration in radio astronomy using Alternating Direction Implicit methods: Analysis and applications", Astronomy & Astrophysics, 2014, in press.

- P. Prasad, S. J. Wijnholds, F. Huizinga and R.A.M.J. Wijers, "Real-time calibration of the AARTFAAC array for transient detection", Astronomy & Astrophysics, V568, no. A48, 2014.  

- Stefan J. Wijnholds, Wim A. van Cappellen, Jan Geralt bij de Vaate and Arnold van Ardenne, "Phased-Array Antenna System Development for Radio-Astronomy Applications", IEEE Antennas and Propagation Magazine, V55, no. 6, pp293-308, December 2013 

- Stefan J. Wijnholds, Marianna V. Ivashina, Rob Maaskant and Karl F. Warnick, "Polarimetry With Phased Array Antennas: Sensitivity and Polarimetric Performance Using Unpolarized Sources for Calibration", IEEE Transactions on Antennas and Propagation, V60, no. 10, pp4688-4698, October 2012

- P. Noorishad, S.J. Wijnholds, A. van Ardenne and J.M. van der Hulst, "Redundancy calibration of phased-array stations", Astronomy & Astrophysics, V545, no. A108, pp1-15, September 2012

- R. Maaskant, M.V. Ivashina, S.J. Wijnholds and K.F. Warnick, "Efficient Prediction of Array Element Patterns Using Physics-Based Expansions and a Single Far-Field Measurement", IEEE Transactions on Antennas and Propagation, V60, no. 8, pp3614-3621, August 2012 

- Karl F. Warnick, Marianna V. Ivashina, Stefan J. Wijnholds and Rob Maaskant, "Polarimetry With Phased Array Antennas: Theoretical Framework and Definitions", IEEE Transactions on Antennas and Propagation, V60, no. 1, pp184-196, January 2012 

- S. J. Wijnholds, J. D. Bregman and A. van Ardenne, "Calibratability and its impact on configuration design for the LOFAR and SKA phased array radio telescopes", Radio Science, V46, RS0F07, 8 November 2011 

- Stefan J. Wijnholds and Wim A. van Cappellen, "In Situ Antenna Performance Evaluation of the LOFAR Phased Array Radio Telescope", IEEE Transactions on Antennas and Propagation, V59, no. 6, pp1981-1989, June 2011

- Gideon W. Kant, Parbhu D. Patel, Stefan J. Wijnholds, Mark Ruiter and Erik van der Wal, "EMBRACE: A Multi-Beam 20,000-Element Radio Astronomical Phased Array Antenna Demonstrator", V59, no. 6, pp1990-2003, June 2011 

- Stefan J. Wijnholds, Sebastiaan van der Tol, Ronald Nijboer and Alle-Jan van der Veen, "Calibration Challenges for Future Radio Telescopes", IEEE Signal Processing Magazine, V27, no. 1, pp30-42, January 2010

- Stefan J. Wijnholds and Alle-Jan van der Veen, "Multisource Self-Calibration for Sensor Arrays", IEEE Transactions on Signal Processing, V57, no. 9, pp3512-3522, September 2009  

- Stefan J. Wijnholds and Alle-Jan van der Veen, "Fundamental Imaging Limits of Radio Telescope Arrays", IEEE Journal of Selected Topics in Signal Processing, V2, no. 5, pp613-623, October 2008   

 

Please, see also the website of Stefan Wijnholds

 

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