S. Unnikrishna Pillai
Back to Main PageJournals | Seminars | Conferences | Research Funding | References
S. Unnikrishna Pillai
Back to Main PageJournals | Seminars | Conferences | Research Funding | References | |
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S. Unnikrishna Pillai, F. Haber and Y. Bar-Ness, "A Complex Vector Space Approach to Multiple Source Location and Signal Estimation," Proceedings of DSP Workshop, Chatham, Massachusetts, 8-10 October 1984. |
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S. Unnikrishna Pillai, Y. Bar-Ness and F. Haber, "A New Approach to Array Geometry for Improved Spatial Spectrum Estimation," presented at ICASSP-85, Tampa, Florida, March 1985. |
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S. Unnikrishna Pillai and F. Haber, "Spectrum Estimation for Distributed Sources," presented at the 20th annual conference on Information Sciences and Systems, Princeton, New Jersey, March 19-21, 1986. |
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S. Unnikrishna Pillai and F. Haber, "Statistical Analysis of a High Resolution Spatial Spectrum Estimator Utilizing an Augmented Covariance Matrix," Proc. of the Third ASSP Workshop on Spectrum Estimation and Modeling, Northeastern University, Boston, MA, November 17-18, 1986. |
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S. Unnikrishna Pillai and F. Haber, "A New Test in Factor Analysis Based on Higher Powers of the Sample Eigenvalues," presented at the 1986 IEEE International Symposium on Information Theory, University of Michigan, Ann Arbor, October 5-9, 1986. |
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S. Unnikrishna Pillai, "Coherent Signal Classification by Symmetry Considerations," presented at the Conference on Information Systems and Sciences, Johns Hopkins University, Baltimore, March 25-27, 1987. |
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Y. J. Lee and S. Unnikrishna Pillai, "Spatial Spectrum Estimation: A Nonparametric Approach," presented at the 30th Midwest Symposium on Circuits and Systems, Syracuse University, August 17-19, 1987. |
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S. Unnikrishna Pillai and F. Haber, "Can Extra Unknown Parameters Hurt?" presented at the fifth workshop on Multidimensional Signal Processing, The Delft, Netherlands, September 14-16, 1987. |
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B. H. Kwon and S. Unnikrishna Pillai, "A Self Inversive Array Processing Scheme for Improved Performance," presented at the 22nd Annual Conference on Information Sciences and Systems, Princeton, New Jersey, March 16-18, 1988. |
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Y. J. Lee and S. Unnikrishna Pillai, "An Algorithm for Optimal Placement of Sensor Elements," presented at ICASSP-88, New York, April 11-14, 1988. |
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B. H. Kwon and S. Unnikrishna Pillai, "Performance Analysis of Eigenvector-Based High Resolution Estimators for Direction Finding in Correlated and Coherent Scenes," Proceedings of the Fourth ASSP Workshop on Spectrum Estimation and Modeling, University of Minnesota, MN, pp. 103-107, August 3-5, 1988. |
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S. Unnikrishna Pillai, Y. Lee and D. C. Youla, "Angle of Arrival Estimation Based on First Order Statistics," presented at the 1988 Digital Signal Processing Workshop, Lake Tahoe, CA, September 14-17, 1988. |
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S. Unnikrishna Pillai and B. H. Kwon, "GEESE" (Generalized Eigenvalues Utilizing Signal Subspace Eigenvectors) - A new technique for direction Finding," Proc. of the twenty second annual Asilomar Conference on Signals, Systems, and Computers, Pacific Grove, CA, October 31 - November 2, pp. 568-572, 1988. |
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R. N. Madan and S. U. Pillai, "Statistics of Generalized Eigenvalues for Signal Parameter Estimation," Proc. of the Second IMA Conference of Mathematics in Signal Processing, University of Warwick, Warwick, England, December 13-15, 1988. |
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B. H. Kwon and S. Unnikrishna Pillai, "Three Source Scenes--New Results on Signal Resolution," presented at the twenty third annual Asilomar Conference on Signals, Systems, and Computers, Pacific Grove, CA, October 30 - November 1, 1989. |
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S. Unnikrishna Pillai, "Signal Resolution Using Generalized Eigenvalues for Coherent Sources," Proceedings of TENCON - 89 IEEE Region-10 Conference, Bombay, India, November 22-24, 1989. |
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S. Unnikrishna Pillai, "A New Spectrum Extension Method that Maximizes the Two Step Prediction Error," Proceedings of Indo-US workshop on Spectrum Analysis in one and two Dimensions, New Delhi, India, pp. 385-402, November 27-29, 1989. |
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S. Unnikrishna Pillai, "Generalization of Maximum Entropy Spectrum Extension Method," ICASSP-90, Albuquerque, New Mexico, pp. 2619-2622, April 3-6, 1990. |
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S. Unnikrishna Pillai and Nikhil D. Sinha, "Higher Order Cramer-Rao Bounds and UMVUES," presented at the twenty fourth annual Asilomar Conference on Signals, Systems and Computers, Pacific Grove, CA; November 5-7, 1990. |
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S. Unnikrishna Pillai and Nikhil D. Sinha, "Improvements on the Cramer-Rao Bound," presented at ICASSP-91, Toronto, Ontario, Canada; pp. 3565-3568, May 14-17, 1991. |
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S. Unnikrishna Pillai and T. I. Shim, "Multichannel Rational Approximation and Wideband Signal Processing," presented at the Underwater Signal Processing Workshop, Kingston, Rhode Island, October 9-11, 1991. |
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** S. Unnikrishna Pillai and R. N. Madan, "Design of Linear Phase FIR Filters with Uniformly Flat Band-Response," Proc. of the twenty fifth annual Asilomar Conference on Signals, Systems and Computers, Pacific Grove, CA; pp. 1015-1020, November 4-6, 1991. |
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D. C. Youla, S. U. Pillai, F. Winter and W. C. Lee, "Maximally Flat Low and High Pass Reactance-Ladder Diplexers with Adjustable Crossover Attenuation," Proc. of ISCAS - 92, San Diego, California, pp. 2057-2060, May 10-13, 1992. |
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S. U. Pillai and T. I. Shim, "Generalization of the Maximum Entropy Concept and Certain ARMA Processes," Proc. of the 12th International Maximum Entropy Workshop, CNRS, Paris, France, July 19-24, 1992. |
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S. U. Pillai and T. I. Shim, "Rational Modeling of Distributed Systems," Proc. of the IEEE Regional Control Conference", Polytechnic University, Brooklyn, New York, pp. 20-24, July 24-25, 1992. |
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** S. U. Pillai and W. C. Lee,"Identification of Non-Minimum Phase Rational Systems," Proc. of the sixth SSAP Workshop On Statistical, Signal, and Array Processing, Victoria, British Columbia, Canada, October 7-9, 1992. |
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S. U. Pillai and T. I. Shim,"Stable Pole Extraction From Scattering Data," Proc. of the International Conference on Ultra-Wideband, Short-Pulse Electromagnetics, Polytechnic University, Brooklyn, NY, October 8-10, 1992. |
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** S. U. Pillai, T. I. Shim and D. C. Youla, "A New Approach to System Identification and Rational Approximation," Proc. of the twenty sixth annual Asilomar Conference on Signals, Systems and Computers, Pacific Grove, CA, October 26-28, 1992. |
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S. U. Pillai and W. C. Lee, "Non-Minimum Phase Systems and a Geometrical Approach to the Double-Extension Problem," Proc. of the twenty sixth annual Asilomar Conference on Signals, Systems and Computers, Pacific Grove, CA, October 26-28, 1992. |
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** S. U. Pillai and W. C. Lee, "Parametrization of Stable Systems from Impulse Response Data," Proc. of the twenty seventh annual Asilomar Conference on Signals, Systems and Computers, Pacific Grove, CA November 1-3, 1993. |
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** S. U. Pillai and T. I. Shim, "Multichannel Rational System Identification," Proc. of the twenty seventh annual Asilomar Conference on Signals, Systems and Computers, Pacific Grove, CA November 1-3, 1993. |
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S. U. Pillai and W. C. Lee, "`Parametrization of Stable Systems from Impulse Response Data," Proc. of the ICASSP-94, Adelaide, Australia, April 19-22, 1994. |
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** W. C. Lee and S. U. Pillai, "Model Order Reduction of Multichannel Stable Systems," Proc. of the twenty eighth annual Asilomar Conference on Signals, Systems and Computers, Pacific Grove, CA, October 31-November 2, 1994. |
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** S. U. Pillai and H. S. Oh, "Resonant Mode Extraction from Scattered Noisy Data," Proc. of the twenty eighth annual Asilomar Conference on Signals, Systems and Computers, Pacific Grove, CA, October 31-November 2, 1994. |
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** S. U. Pillai, "Identification of Nonminimum Phase Systems and Wideband Array Signal Processing," Navy Wideband RF Science and Technology Workshop, NRaD, San Diego, CA, February 2, 1995. |
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J. R. Guerci and S. U. Pillai, "Efficient Multichannel Space-Time Whitening Filters," Proc. of the third annual workshop on Adaptive Sensor Array Processing, Lincoln Laboratory, MIT, Lexington, MA, March 15-17, 1995. |
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S. U. Pillai and W. C. Lee, "Design of Stable Allpass Filters with Prescribed Phase characteristics," Proc. of the Pacific Rim Conference on Communications, Computers, and Signal Processing, Victoria, B. C., Canada, May 17-19, 1995. |
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** W. C. Lee, S. U. Pillai and L. Tassiulas, "Beamforming for Efficient Interference Suppression in a Mobile Communication Environment," Proc. of the twenty ninth annual Asilomar Conference on Signals, Systems and Computers, Pacific Grove, CA, October 29-November 1, 1995. |
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** S. U. Pillai, W. C. Lee and J. Guerci, "Multichannel Space-Time Adaptive Processing," Proc. of the twenty ninth annual Asilomar Conference on Signals, Systems and Computers, Pacific Grove, CA, October 29-November 1, 1995. |
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J. Guerci, S. U. Pillai, and Y. Kim, "Efficient Space-Time Adaptive Processing for Airborne MTI-Mode Radar," Proc. of the ICASSP-96, Atlanta, GA, pp. 2781-2784, May 7-10, 1996. |
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S. U. Pillai, Y.L. Kim and J. Guerci, "An Efficient Implicit Interference Subspace Removal Technique for STAP, " Proc. of the fifth annual workshop on Adaptive Sensor Array Processing, Lincoln Laboratory, MIT, Lexington, MA, March 5-7, 1997. |
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Ben Liang and S. Unnikrishna Pillai, "Blind Image Deconvolution using a Robust 2-D GCD Approach," ISCAS-97, Hong Kong, June 9-12, 1997. |
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S. Unnikrishna Pillai and Ben Liang, "Blind Image Deconvolution using a Robust Approach," ICIP-97, Santa Barbara, October 27-30, 1997. |
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S. Unnikrishna Pillai, Y. L. Kim and J. R. Guerci, "Strategies for Minimal Sample Support STAP," Proc. of the sixth annual workshop on Adaptive Sensor Array Processing, Lincoln Laboratory, MIT, Lexington, MA, March 11-12, 1998. |
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Y. L. Kim, S. Unnikrishna Pillai and J. R. Guerci, "Optimal Loading Factor for Minimal Sample Support Space-Time Adaptive Radar," Proc. of ICASSP-98, Seattle, WA, May 12-15, 1998. |
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S. Unnikrishna Pillai, J. R. Guerci and Y. L. Kim, " Generalized Forward/Backward Subaperture Smoothing Techniques for Sample Starved STAP," Proc. of ICASSP-98, Seattle, WA, May 12-15, 1998. |
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S. U. Pillai, H. S. Oh, J. R. Guerci and D. C. Youla "Matched Transmit-Receiver Design in Presence of Signal Dependent Interference," Proc. of the thirty third annual Asilomar Conference on Signals, Systems and Computers, Pacific Grove, CA, October 24 - October 27, 1999. |
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J. R. Guerci and S. U. Pillai, "Theory and Application of Adaptive Transmitter Radar," Proceedings of the Adaptive Sensor Array Processing (ASAP) Workshop, MIT Lincoln Laboratory, Lexington, MA, March 13-14, 2000. |
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J. R. Guerci and S. U. Pillai, "Application of the Khatri-Rao Product to Statistical Array Processing," International conference on Statistics: Reflections on the Past and Visions for the Future, San Antonio, TX, March 16-19, 2000. |
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S. U. Pillai, H. S. Oh and J. R. Guerci, "Multichannel Matched transmit-Receiver Design in Presence of Signal Dependent Interference and Noise," Proc. of the Sensor Array and Multichannel Signal Processing Workshop, Cambridge, MA, March 16-17, 2000. |
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J. R. Guerci and S. U. Pillai, "Theory and Application of Optimum Transmit-Receive Radar," Radar-2000 Conference, Washington, DC, pp. 705-710, May 8-12, 2000. |
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D. A. Garren, M. K. Osborn, A. C. Odom, J. S. Goldstein, S. U. Pillai, and J. R. Guerci, "Optimized Target Detection and Identification using Full-Polarization Radar Waveforms," Proc. of the Adaptive Sensor Array Processing Workshop, MIT Lincoln Laboratory, Lexington, MA, March 13, 2001. |
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S. U. Pillai and J. Guerci, "Optimized Multichannel Waveforms with Application to Polarimetrics," Proc. of the Adaptive Sensor Array Processing Workshop, MIT Lincoln Laboratory, Lexington, MA, March 12-13, 2002. |
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S.U. Pillai and H.S. Oh, "Optimum MIMO Transmitter-Receiver Design in Presence of Interference," Proc. of ISCAS-2003, Bangkok, Thailand, Vol. IV, pp.436-439, May 25-28, 2003. |
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S.U. Pillai, "Multichannel Waveform Diversity for Improved Target Identification," Second Tri-Service Waveform Diversity Workshop, Verona, NY, February 2004. |
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S.U. Pillai, B. Himed, K.Y. Li, "Modeling Earth's Rotation for Space Based Radar," Asilomar Conference on Signals and Systems, Asilomar, CA, Nov 7-10, 2004. |
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S.U. Pillai, B. Himed, K.Y. Li, "Waveform Diversity for Space Based Radar," Proc. of Waveform Diversity and Design, Edinburgh, Scotland, Nov 8-10, 2004. |
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S.U. Pillai, B. Himed, K.Y. Li, "Orthogonal Pulsing Schemes for Improved Target Detection in Space Based Radar," 2005 IEEE Aerospace Conference, Big Sky, MT, March 5-12, 2005. |
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S. U. Pillai et. al. , “Effect of Earth’s Rotation and Range Foldover on Space Based Radar Performance”, 2005 IEEE International Radar Conference, Arlington, VA, May 9-12, 2005. |
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K. Y. Li, S. Mangiat, S. R. Pillai, B. Himed, “Geometrical Considerations for Terrain Mapping in SBR Applications”, 2005 IEEE International Radar Conference, Arlington , VA, May 9-12, 2005. |
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S. U. Pillai et. al. “ Energy Threshold Constraints in Transmit Waveform Design ”, 2006 International Waveform Diversity & Design Conference , Kauai , Hawaii , Jan. 22-27, 2006 . |
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S. U. Pillai et. al. “Cramer-Rao Bounds for Target Doppler and Power in Space Based Radar”, 2006 IEEE Radar Conference, Verona, NY, April 24 – 27, 2006 |
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S. Mangiat, K. Y. Li, S. U. Pillai, B. Himed, “Effect of Terrain Modeling and Internal Clutter Motion on Space Based Radar Performance”, 2006 IEEE Radar Conference, Verona, NY, April 24 – 27, 2006 |
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Ke Yong Li, Stephen Mangiat , Peter Zulch, S. U. Pillai, “Clutter Impacts on Space Based Radar GMTI: A Global Perspective”, 2007 IEEE Aerospace Conference, Big Sky, MT, 3-10 March 2007 |
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S. U. Pillai et. al., “Effect of Bandwidth on Wideband-STAP Performance”, Asilomar Conference on Signals, Systems, and Computers, Pacific Grove, CA, Nov 4-7, 2007. |
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Ke Yong Li, S. U. Pillai, Peter Zulch, and Michael Callahan, “A Modulation Based Approach to Wideband-STAP”, Asilomar Conference on Signals, Systems, and Computers, Pacific Grove, CA, Nov 4-7, 2007. |
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S. U. Pillai, et. al. “Efficient Wideband Processing Without Subbanding”, 2008 IEEE Radar Conference, Rome, Italy, 26-30 May 2008 |
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S. U. Pillai et. al. “Waveform Design Optimization using Bandwidth and Energy Considerations”, 2008 IEEE Radar Conference, Rome, Italy, 26-30 May 2008 |
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S. U. Pillai et. al. “Effect of Wind on Space-Based Radar Performance”, 2008 IEEE Radar Conference, Rome, Italy, 26-30 May 2008 |
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