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Unnikrishna Pillai

Full Professor Electrical Engineering

    1974 …2019

    Research output per year

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    Research Output

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    Conference contribution

    A comparison of receiver concepts for doubly-dispersive random channels

    Sgraja, C., Lindner, J. & Pillai, S. U., Mar 14 2018, 2004 International Waveform Diversity and Design Conference, WDD 2004 - Proceedings. Institute of Electrical and Electronics Engineers Inc., p. 1-3 3 p. (2004 International Waveform Diversity and Design Conference, WDD 2004 - Proceedings; vol. 2018-January).

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    A Complex Vector Space Approach to Multiple Source Location and Signal Estimation

    Pillai, U., Haber, F. & Bar-Ness, Y., Oct 1984, Proceedings of DSP Workshop, Chatham, Massachusetts.

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    Adaptive transmitter weight design for clutter suppression

    Pillai, S. U., Li, K. Y. & Himed, B., Nov 22 2010, 2010 2nd International Workshop on Cognitive Information Processing, CIP2010. p. 360-363 4 p. 5604206. (2010 2nd International Workshop on Cognitive Information Processing, CIP2010).

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    A modulation based approach to wideband-STAP

    Li, K. Y., Pillai, U. S., Zulch, P. & Callahan, M., Dec 1 2007, Conference Record of the 41st Asilomar Conference on Signals, Systems and Computers, ACSSC. p. 1825-1829 5 p. 4487550. (Conference Record - Asilomar Conference on Signals, Systems and Computers).

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    An Efficient Implicit Interference Subspace Removal Technique for STAP

    Pillai, U., Kim, Y. L. & Guerci, J. R., Mar 1997, Proceedings of the 5th Annual workshop on Adaptive Sensor Array Processing, Lincoln Laboratory, MIT, Lexington, MA.

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    A new approach to system identification and rational approximation

    Unnikrishna Pillai, S., Shim, T. I. & Youla, D. C., Jan 1 1992, Conference Record of the 26th Asilomar Conference on Signals, Systems and Computers, ACSSC 1992. IEEE Computer Society, p. 199-203 5 p. 269286. (Conference Record - Asilomar Conference on Signals, Systems and Computers).

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    A New Spectrum Extension Method that Maximizes the Two Step Prediction Error

    Pillai, U., Nov 1989, Proceedings of Indo-US workshop on Spectrum Analysis in one and two Dimensions, New Delhi, India. p. 385-402 17 p.

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    Angle-Doppler processing using sparse regularization

    Selesnick, I. W., Pillai, S. U., Li, K. Y. & Himed, B., Nov 8 2010, 2010 IEEE International Conference on Acoustics, Speech, and Signal Processing, ICASSP 2010 - Proceedings. p. 2750-2753 4 p. 5496219. (ICASSP, IEEE International Conference on Acoustics, Speech and Signal Processing - Proceedings).

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    Angle of Arrival Estimation Based on First Order Statistics

    Pillai, U., Lee, Y. & Youla, D. C., Sep 1988, Presented at the 1988 Digital Signal Processing Workshop, Lake Tahoe, CA.

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    An iterative algorithm for the construction of notched chirp signals

    Selesnick, I. W., Pillai, S. U. & Zheng, R., Jul 30 2010, 2010 IEEE Radar Conference: Global Innovation in Radar, RADAR 2010 - Proceedings. p. 200-203 4 p. 5494625. (IEEE National Radar Conference - Proceedings).

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    Application of the Khatri-Rao Product to Statistical Array Processing

    Guerci, J. R. & Pillai, U., Mar 2000, International conference on Statistics: Reflections on the Past and Visions for the Future, San Antonio, TX.

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    A Self Inversive Array Processing Scheme for Improved Performance

    Kwon, B. H. & Pillai, U., Mar 1988, Presented at the 22nd Annual Conference on Information Sciences and Systems, Princeton, New Jersey.

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    Beamforming for efficient interference suppression in a mobile communication environment

    Lee, W. C. & Unnikrishna Pillai, S., Jan 1 1995, Conference Record of the 29th Asilomar Conference on Signals, Systems and Computers, ACSSC 1995. Singh, A. (ed.). IEEE Computer Society, p. 771-775 5 p. 540805. (Conference Record - Asilomar Conference on Signals, Systems and Computers; vol. 2).

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    Beam forming for Efficient Interference Suppression in a Mobile Communication Environment

    Lee, W. C. & Pillai, U., Nov 1995, Proceedings of the 29th Annual Asilomar Conference on Signals, Systems and Computers, Pacific Grove, CA.

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    Can Extra Unknown Parameters Hurt?

    Pillai, U. & Haber, F., Sep 1987, Presented at the fifth workshop on Multidimensional Signal Processing, The Delft, Netherlands.

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    Chirp-like transmit waveforms with multiple frequency-notches

    Selesnick, I. W. & Pillai, S. U., Sep 12 2011, RadarCon'11 - In the Eye of the Storm: 2011 IEEE Radar Conference. p. 1106-1110 5 p. 5960706. (IEEE National Radar Conference - Proceedings).

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    Clutter impacts on space based radar GMTI: A global perspective

    Li, K. Y., Mangiat, S., Zulch, P. & Pillai, U., Sep 24 2007, 2007 IEEE Aerospace Conference Digest. 4161481. (IEEE Aerospace Conference Proceedings).

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    Coherent Signal Classification by Symmetry Considerations

    Pillai, U., Mar 1987, presented at the Conference on Information Systems and Sciences, Johns Hopkins University, Baltimore.

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    Constant envelope signals with prescribed discrete Fourier transform magnitude

    Pillai, S. U., Li, K. Y. & Himed, B., Sep 12 2011, RadarCon'11 - In the Eye of the Storm: 2011 IEEE Radar Conference. p. 470-473 4 p. 5960582. (IEEE National Radar Conference - Proceedings).

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    Cramer-Rao bounds for target doppler and power in space based radar

    Pillai, S. U., Li, K. Y. & Himed, B., Dec 1 2006, 2006 IEEE Radar Conference. p. 452-458 7 p. 1631839. (IEEE National Radar Conference - Proceedings).

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    Cramer-Rao bounds for target Doppler and power in space based radar

    Pillai, S. U., Li, K. Y. & Himed, B., Nov 21 2006, 2006 IEEE Radar Conference. p. 452-458 7 p. 1631839. (CIE International Conference of Radar Proceedings; vol. 2006).

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    Design of Linear Phase FIR Filters with Uniformly Flat Band-Response

    Pillai, U. & Madan, R. N., Nov 1991, Proceedings of the Twenty-Fifth Annual Asilomar Conference on Signals, Systems and Computers, Pacific Grove, CA. p. 1015-1020 5 p.

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    Design of unimodular sequences using generalized receivers

    Pillai, S. U., Li, K. Y., Zheng, R. & Himed, B., Jul 30 2010, 2010 IEEE Radar Conference: Global Innovation in Radar, RADAR 2010 - Proceedings. p. 729-734 6 p. 5494526. (IEEE National Radar Conference - Proceedings).

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    Distribution of multi-look SAR and ATI using two phase centers

    Pillai, U. & Davis, M. E., Jan 1 2014, 2014 IEEE Radar Conference: From Sensing to Information, RadarCon 2014. Institute of Electrical and Electronics Engineers Inc., p. 22-26 5 p. 6875548. (IEEE National Radar Conference - Proceedings).

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    Doppler-streak attenuation via oscillatory-plus-transient decomposition of IQ data

    Selesnick, I. W., Li, K. Y., Pillai, S. U. & Himed, B., Dec 1 2012, IET International Conference on Radar Systems, Radar 2012. 603 CP ed. 1638. (IET Conference Publications; vol. 2012, no. 603 CP).

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    Effect of bandwidth on wideband-stap performance

    Pillai, S. U., Li, K. Y. & Guerci, J. R., Dec 1 2007, Conference Record of the 41st Asilomar Conference on Signals, Systems and Computers, ACSSC. p. 2195-2198 4 p. 4487630. (Conference Record - Asilomar Conference on Signals, Systems and Computers).

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    Effect of terrain modeling and internal clutter motion on space based radar performance

    Mangiat, S., Li, K. Y., Pillai, S. U. & Himed, B., Dec 1 2006, 2006 IEEE Radar Conference. p. 310-317 8 p. 1631817. (IEEE National Radar Conference - Proceedings).

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    Effect of wind on space-based radar performance

    Pillai, S. U., Li, K. Y. & Himed, B., Dec 1 2008, 2008 IEEE Radar Conference, RADAR 2008. 4721102. (2008 IEEE Radar Conference, RADAR 2008).

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    Efficient Multi-channel Space-Time Whitening Filters

    Guerci, J. R. & Pillai, U., Mar 1995, Proceedings of the third annual workshop on Adaptive Sensor Array Processing, Lincoln Laboratory, MIT, Lexington, MA.

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    Efficient wideband processing without subbanding

    Unnikrishna Pillai, S., Li, K. Y. & Guerci, J. R., Dec 1 2008, 2008 IEEE Radar Conference, RADAR 2008. 4720938. (2008 IEEE Radar Conference, RADAR 2008).

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    Energy threshold constraints in transmit waveform design

    Pillai, S. U., Li, K. Y. & Himed, B., Mar 21 2018, 2006 International Waveform Diversity and Design Conference, WDD 2006 - Proceedings. Institute of Electrical and Electronics Engineers Inc., p. 1-5 5 p. (2006 International Waveform Diversity and Design Conference, WDD 2006 - Proceedings; vol. 2018-January).

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    Exploiting temporal proximity for moving target identification using bistatic/passive SAR

    Li, K. Y., Pillai, U. & Himed, B., Jun 3 2016, 2016 IEEE Radar Conference, RadarConf 2016. Institute of Electrical and Electronics Engineers Inc., 7485224. (2016 IEEE Radar Conference, RadarConf 2016).

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    Generalization of the Maximum Entropy Concept and Certain ARMA Processes

    Pillai, U. & Shim, T. I., Jul 1992, Proceedings of the 12th International Maximum Entropy Workshop, CNRS, Paris, France.

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    Generalized forward/backward subaperture smoothing techniques for sample starved STAP

    Pillai, S. U., Guerci, J. R. & Kim, Y. L., Dec 1 1998, Proceedings of the 1998 IEEE International Conference on Acoustics, Speech and Signal Processing, ICASSP 1998. p. 2501-2504 4 p. 681659. (ICASSP, IEEE International Conference on Acoustics, Speech and Signal Processing - Proceedings; vol. 4).

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    Geolocation of moving targets in Gotcha data using multimode processing

    Pillai, U., Li, K. Y. & Scarborough, S. M., Jan 1 2015, Algorithms for Synthetic Aperture Radar Imagery XXII. Zelnio, E. & Garber, F. D. (eds.). SPIE, 947508. (Proceedings of SPIE - The International Society for Optical Engineering; vol. 9475).

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    Geometrical Considerations for Terrain Mapping in SBR Applications

    Li, K. Y., Mangiat, S., Pillai, U. & Himed, B., May 2005, 2005 IEEE International Radar Conference, Arlington , VA.

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    Identification of nonminimum phase rational systems

    Pillai, S. U. & Lee, W. C., Jan 1 1992, 1992 IEEE 6th SP Workshop on Statistical Signal and Array Processing, SSAP 1992 - Conference Proceedings. Institute of Electrical and Electronics Engineers Inc., p. 408-411 4 p. 246871. (1992 IEEE 6th SP Workshop on Statistical Signal and Array Processing, SSAP 1992 - Conference Proceedings).

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    Identification of Non-Minimum Phase Rational Systems

    Pillai, U. & Lee, W. C., Oct 1992, Proceedings of the Sixth SSAP Workshop On Statistical, Signal, and Array Processing, Victoria, British Columbia, Canada.

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    Identification of Non-minimum Phase Systems and Wide-band Array Signal Processing

    Pillai, U., Feb 1995, Navy Wideband RF Science and Technology Workshop, NRaD, San Diego, CA.

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    Improvements on the Cramer-Rao bound

    Pillai, S. U. & Sinha, N. D., Dec 1 1991, Proceedings - ICASSP, IEEE International Conference on Acoustics, Speech and Signal Processing. Publ by IEEE, p. 3565-3568 4 p. (Proceedings - ICASSP, IEEE International Conference on Acoustics, Speech and Signal Processing; vol. 5).

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    Joint Along Track Interferometry and Space-Time Adaptive Processing for target detection and geolocation

    Uysal, F., Murthy, V., Li, K. Y., Pillai, S. U. & Davis, M. E., Oct 7 2013, IEEE Radar Conference 2013: "The Arctic - The New Frontier", RadarCon 2013. 6585968. (IEEE National Radar Conference - Proceedings).

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    Joint optimal TX-RX design for multiple target identification problem

    Pillai, S. U., Guerci, J. R. & Radhakrishnan Pillai, S., Jan 1 2002, 2002 IEEE Sensor Array and Multichannel Signal Processing Workshop Proceedings, SAME 2002. IEEE Computer Society, p. 553-556 4 p. 1191101. (Proceedings of the IEEE Sensor Array and Multichannel Signal Processing Workshop; vol. 2002-January).

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    Maximally flat low and high-pass reactance-ladder diplexers with adjustable crossover attenuation

    Youla, D. C., Pillai, S. U., Winter, F. & Lee, W. C., Jan 1 1992, 1992 IEEE International Symposium on Circuits and Systems, ISCAS 1992. Institute of Electrical and Electronics Engineers Inc., p. 2057-2060 4 p. 230370. (Proceedings - IEEE International Symposium on Circuits and Systems; vol. 4).

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    Minimum detectable velocity (MDV) for ATI and STAP for high speed platforms

    Li, K. Y., Pillai, U. & Mudaliar, S., Apr 2019, 2019 IEEE Radar Conference, RadarConf 2019. Institute of Electrical and Electronics Engineers Inc., 8835591. (2019 IEEE Radar Conference, RadarConf 2019).

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    Missing data recovery using low rank matrix completion methods

    Pillai, U., Murthy, V. & Selesnick, I., Jul 30 2012, 2012 IEEE Radar Conference: Ubiquitous Radar, RADARCON 2012 - Conference Program. p. 101-106 6 p. 6212119. (IEEE National Radar Conference - Proceedings).

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    Model order reduction of multichannel stable systems

    Lee, W. C. & Pillai, S. U., Jan 1 1994, Conference Record - 28th Asilomar Conference on Signals, Systems and Computers, ACSSC 1994. IEEE Computer Society, p. 410-414 5 p. 471486. (Conference Record - Asilomar Conference on Signals, Systems and Computers; vol. 1).

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    Model Order Reduction of Multi-channel Stable Systems

    Lee, W. C. & Pillai, U., Nov 1994, Proceedings of the 28th Annual Asilomar Conference on Signals, Systems and Computers, Pacific Grove, CA.

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    Modified space-time adaptive processing for dismount detection using synthetic aperture radar

    Li, K. Y., Uysal, F., Pillai, S. U. & Moore, L. J., Jul 30 2012, 2012 IEEE Radar Conference: Ubiquitous Radar, RADARCON 2012 - Conference Program. p. 116-121 6 p. 6212122. (IEEE National Radar Conference - Proceedings).

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    Multichannel matched transmit-receiver design in presence of signal-dependent interference and noise

    Pillai, S. U., Oh, H. S. & Guerci, J. R., Jan 1 2000, Proceedings of the 2000 IEEE Sensor Array and Multichannel Signal Processing Workshop, SAME 2000. IEEE Computer Society, p. 385-389 5 p. 878035. (Proceedings of the IEEE Sensor Array and Multichannel Signal Processing Workshop; vol. 2000-January).

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    Multi-channel Rational Approximation and Wide band Signal Processing

    Pillai, U. & Shim, T. I., Oct 1991, Presented at the Underwater Signal Processing Workshop, Kingston, Rhode Island.

    Research output: Chapter in Book/Report/Conference proceedingConference contribution