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Ric A. Romero
Associate Professor
Department of Electrical and Computer Engineering
Monterey, CA 93943
Email: rnromero (at) nps.edu
Web: faculty.nps.edu/rnromero/
EDUCATION:
PhD - University of Arizona - Dec, 2010
Electrical and Computer Engineering
MS - University of Southern California - Dec, 2004
Electrical Engineering
BS - Purdue University - May, 1999
Electrical Engineering
WORK EXPERIENCE (NPS and INDUSTRY):
  • 2016- Present, Associate Professor, ECE, Naval Postgraduate School
  • 2010- 2016, Assistant Professor, ECE, Naval Postgraduate School
  • 1999 - 2010, Senior Engineer, Raytheon Missile Systems, Tucson, AZ,
  • 2007 - 2010, Research Assistant, ECE Dept, University of Arizona,
  • 1996 - 1998, Co-Op Engineer, Rockwell Collins, Cedar Rapids, IA, (4 semesters)
CURRENT RESEARCH INTERESTS
  • Cognitive Radar / Cognitive Radar Network / Cognitive Sensing
  • Adaptive Waveform Design
  • Electronic Warfare Systems
  • Adaptive Spatial Illumination, Beamforming, Beamsteering
  • Communications, 5G, MIMO, Radar-Comms, Cyber Warfare
JOURNAL PUBLICATIONS (and IEEE Magazine)
  • Q. J. O. Tan and R. A. Romero, "Jammer-Nulling Transmit-Adaptive Radar Against Knowledge-Based Jammers in Electronic Warfare,", IEEE Access, Dec, 2019
  • D. Jenn, P. Pace, and R. A. Romero, “An antenna for a mast-mounted low probability intercept continuous radar," IEEE Antennas & Propagation Magazine, Apr, 2019
  • Q. Jeanette O. Tan and R. A. Romero, “Ground vehicle target signature identification with cognitive automotive radar using 24–25 and 76–77 GHz bands," IET Radar, Sonar, and Navigation: Special Section on Cognitive Radar, vol. 12, issue 12, Dec, 2018
  • T. Tedesso and R. A. Romero, “Code shift keying based joint radar and communications for EMCON applications,” Elsevier Digital Signal Processing: Special Issue on Joint Radar and Communications, vol. 80, p. 48 – 56, Sep 2018
  • Nieh, J., and R. A. Romero, “Comparison of ambiguity function of eigenwaveform to wideband and pulsed radar waveforms: a comprehensive tutorial,” IET Journal of Engineering, vol. 2018, Issue 4, p. 203 –221, Apr 2018
  • Romero, R. A., and K. Shepherd, “Friendly spectrally-shaped radar waveform with legacy communications systems for shared access and spectrum management,” IEEE Access, Sept, 2015
  • Romero, R. A., and E. Mourtzakis, “Transmit energy efficiency of two cognitive radar platforms for target identification,” Aerospace (Special Issue: Driving Aerospace Innovation Forward), vol. 2, pp. 376-391, June 2015,(INVITED)
  • Romero, R. A., A. Rios, and T. Ha, “Signals of interest recovery with multiple receivers using reference-based successive interference cancellation for signal collection applications,” IEEE Access, pp. 725-756, Aug 2014
  • Romero, R. A. and N. Goodman, “Cognitive radar network: cooperative adaptive beamsteering for integrated search-and-track application,” IEEE Transactions on Aerospace and Electronic Systems, vol. 49 no. 2, pp. 915-931, Apr 2013
  • Romero, R. A., T. Ha, and S. Lioulis, “Collection probability with discrete random signal-to-interference power ratios in multiple interferences for electronic intelligence receivers,” IET Journal of Engineering, DOI:10.1049/joe.2013.0035, 8 pp, 2013
  • Romero, R. A. and T. T. Ha, “Severe performance effects of combined jamming and interferences and Rayleigh fading with mitigation using joint complex spreading and MIMO,” Universal Journal of Communications and Network, 1, 127-141. doi:10.13189/ujcn.2013.010402, 2013
  • Romero, R. A., J. Bae, and N. Goodman, “Theory and application of SNR and mutual information matched illumination waveforms,” IEEE Transaction on Aerospace and Electronics Systems, vol 45, no. 2, Apr. 2011
  • Romero, R. A., and N. Goodman, “Waveform design in signal-dependent interference and application to target recognition with multiple transmissions,” IET Radar, Sonar, and Navigation Special Issue 2009 vol. 3, no. 4, pp. 328-340, (INVITED/SELECTED PAPER)
CONFERENCE PUBLICATIONS
  • H. Albuquerque and R. A. Romero, "Coherent Jammer Mitigation with Target Signatures using LFM and Frank-Coded Waveforms," 2019 Asilomar Conference on Signals, Systems, and Computers, Pacific Grove, CA, Nov. 2019
  • Ben M. Bey and R. A. Romero, "Clutter-compensating adaptive waveforms with cognitive radar for target classification using EM-simulated ground-based RCS responses," 2019 European Radar Conference, Paris, France, Oct. 2019
  • R. A. Romero, Y. Heng, and T. Ha, "N-dimensional M-ary constant energy modulation for nonlinear communications channels," 2019 IEEE Topical Conference on Antennas and Propagatioan, Wireless Communications (APWC), Granada, Spain, Sep. 2019
  • Q. Jeanette O. Tan and R. A. Romero, "Airborne target detection using dual matched filter discriminator with matched waveform illumination for coherent jammer suppression," 2019 IEEE Radar Conference (RadarConf), Boston, MA, Apr 2019
  • M. Parmentar and R. A. Romero, "Opportunistic techniques to inject OFDM subcarriers into navigational radar spectral guard bands and mainlobe for spectrum sharing," 2019 IEEE Radar Conference (RadarConf), Boston, MA, Apr 2019
  • M. Johnson and R. A. Romero, "Signal recovery and detection of certain wideband signals using multiple low-rate ADCs," 2019 IEEE Aerospace Conference, Big Sky, MT, Mar, 2019
  • Q. Jeanette O. Tan and R. A. Romero, “Jammer nulling adaptive waveforms with cognitive radar for aircraft RCS Recognition in presence of frequency sweep based jammers," 2018 IEEE Asilomar Conference on Signals, Systems, and Computers, Oct, 2018 (INVITED PAPER)
  • J. McCorkle and R. A. Romero, "Active sonar matched waveform for resonant spherical mine target," 2018 IEEE/MTS OCEANS Conference, Charleston, SC, Oct 2018
  • Q. Jeanette O. Tan and R. A. Romero, "Air vehicle target recognition with jammer nulling adaptive waveforms in cognitive radar using high-fidelity RCS responses," 2018 IEEE International Conference on Radar, Brisbane, Australia, Aug 2018
  • Q. Jeanette O. Tan and R. A. Romero, and D. Jenn, "Target recognition with adaptive waveforms in cognitive radar using practical target RCS responses," 2018 IEEE Radar Conference (RadarConf), OKC, OK, Apr 2018
  • Hunt, A., R. A. Romero, and Z. Staples, "The effect of embedded intrapulse communications on pulsed radar probability of detection,” 2017 IEEE Global Conference on Signal and Information Processing (GlobalSIP), Montreal, Canada, Nov, 2017
  • Pace, P., S. Teich, O. Brooks, D. Jenn, and R. A. Romero, "Extended detection range using a polyphase CW modulation with an efficient number theoretic correlation process," 2017 IEEE Radar Conference (RadarConf), Seattle, WA, Apr 2017
  • Tedesso, T., R. A. Romero, and Z. Staples "Analysis of a covert communication method utilizing non-coherent DPSK masked by pulsed radar interference,” 2017 IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP), New Orleans, LA, 2017
  • Su, W., K. H. Tan, R. A. Romero, and T. Ha, "MAC sub-layer design to reduce interference in LTE networks,” 2017 IEEE 7th Annual Computing and Communication Workshop and Conference (CCWC), 2017
  • Meager, G., R. A. Romero, and Z. Staples "Estimation and cancellation of high powered radar interference for communication signal collection,” 2016 IEEE Radar Conference (RadarConf), Philadelphia, PA, May 2016
  • Nieh, J. and R. A. Romero, "Integrated range-Doppler map and extended target identification with adaptive waveform for cognitive radar,” 2105 IEEE Radar Conference, Arlington, VA, May 2015
  • Nieh, J. and R. A. Romero, "Adaptive waveform for integrated detection and identification of moving extended target,” 2014 IEEE Asilomar Conference on Signals, Systems, and Computers, Pacific Grove, CA, Nov 2014
  • Garren, D. A., P.E. Pace, and R. A. Romero, "Use of P3-coded transmission waveforms to generate synthetic aperture radar images,” IEEE Radar Conference, Cincinnati, OH, May, 2014
  • Garren, D. A., P.E. Pace, and R. A. Romero, "Phenomenology of low probability of intercept synthetic aperture radar via Frank codes,” Proceedings of the SPIE, June, 2014
  • Nieh, J. and R. A. Romero, "Ambiguity function and detection probability considerations for matched waveform design,” 2013 IEEE International Conference on Acoustics, Speech, and Signal Processing (ICASSP), pp. 4280-4284, Vancouver, BC, May 2013
  • R. A. Romero, "Detection performance of matched transmit waveform for moving extended targets,” 2013 IEEE Asilomar Conference on Signals, Systems, and Computers, Pacific Grove, CA, Nov. 2013
  • K. D Shepherd and R. A. Romero, "Radar waveform design in active communications channel,” 2013 IEEE Asilomar Conference on Signals, Systems, and Computers, Pacific Grove, CA, Nov. 2013
  • E. Mintzias, R. Romero, and Tri Ha, "Performance Evaluation of Complex Spreading MIMO Systems in Rayleigh Fading and Interference,” 2012 IEEE International Waveform Diversity and Design Conference
  • R. Romero, and N. Goodman, "Adaptive Beamsteering for Search-and-Track Application with Cognitive Radar Network,” in Proc. of IEEE Radar Conference, Kansas City, MO, May 2011
  • R. Romero, C. Kenyon, and N. Goodman, "Channel Probability Ensemble Update for Multiplatform Radar Systems,” in Proc. of IEEE International Waveform Diversity and Design Conference, Niagara Falls, Canada, Aug 2010
  • R. Romero, and N. Goodman, "Improved Waveform Design for Target Recognition with Multiple Transmissions,” in Proc. of IEEE International Waveform Diversity and Design Conference, Orlando, FL, Feb 2009
  • R. Romero, and N. Goodman, "Information-Theoretic Matched Waveform Design in Signal-Dependent Interference,” in Proc. of IEEE Radar Conference, Rome, Italy, May 2008
BOOK CHAPTERS
  • N Goodman, P. Venkata, and R. Romero, “Iterative Technique for System Identification with Adaptive Signal Design,” Section C, Ch. 61, Principles of Waveform Diversity and Design, Scitech Publishing
  • N Goodman, J. Bae,, and R. Romero, “Waveform Design for Target Class Discrimination with Closed-Loop Radar,” Section C, Ch. 74, Principles of Waveform Diversity and Design, Scitech Publishing
PATENTS
  • D. Jenn, P. Pace, and R. Romero, “Continuous Wave (CW) Radar System for Phase-Coded Time Delayed Transmit-Receive Leakage Cancellation," Issued Dec 17, 2019, US Patent No. 10,509,117, Assignee: US
  • R. A. Romero and L. Reidhead, “Systems and methods to prevent denial of service attacks,” Issued US 8,683,555 B2 March 25, 2014; also Issued EP Patent No. 2,534,787 B1, Dec 25, 2013, Assignee: RMS
  • R. A. Romero, “Transmitter and hybrid communication method for capacity optimization and outage minimization” Issued Feb 21, 2012, US Patent No. 8,121,562 B2, Assignee: RMS
  • R. A. Romero and M. Bielas, “Multiplatform system and method for ranging correction using spread spectrum ranging waveforms over a netted data link” Issued Oct 16, 2012, US Patent No. 8,288,699 B2, Assignee: RMS
CONFERENCE PRESENTATIONS
  • A. Waymouth and R. Romero, “Improving Digital HF with OFDM,” Mech Aero 2019, San Francisco, CA, Sep. 2019
  • J. McCorkle and R. Romero, “Active sonar waveform design matched to spherical target and undersea channel,” 2018 Joint Undersea Warfare Technology Fall Conference, Groton, CT, Sep 17-19, 2018
  • J. McCorkle and R. Romero, “Active sonar matched waveforms for resonant mine-like targets,” Thirteenth International Mine Warfare Technology Symposium (The Asymmetric Undersea Battle: Mining, Mine Countermeasures, and Unmanned Systems), Monterey, CA, May 22-24, 2018
  • K. N. Wang, G. A. Clark, R. Romero, “Illumination waveform design for non-Gaussian multi-hypotheses target classification in cognitive radar,” Special Session on Cognitive Approaches to Acoustic Signal Processing, 164th Meeting of the Acoustical Society of America, Kansas City, Oct 22-26, 2012 (INVITED)
INDUSTRY CONFERENCE PRESENTATIONS
  • Introduction to Cognitive Radio, Raytheon Missile Systems, RF Symposium, Boston, MA
TEACHING at NPS
  • EC3510 Communications Engineering
  • EC3615 Radar Fundamentals
  • EC4610 Radar Systems
  • EO4612 Microwave and Radar Systems
  • EC4550 Digital Communications
  • EC2650 Fundamentals of Electromagnetic Fields
  • EC2400 Discrete (Time) Systems
  • EC3610 Microwave Engineering
  • EO2652 Fields, Waves, and EM Engineering
  • TS3003 Naval Combat System Elements
BOARDS/MEMBERSHIPS:
  • IEEE Senior Member
  • Asilomar Conference on Signals, Systems, and Computers Finance Chair, 2011-2017
GENERAL AREAS OF RESEARCH:
  • Radar, Sensors, Electromagnetics
  • Communication Systems
  • Signal Processing, Detection, and Estimation
  • Keywords: Communications Systems, Electronic Warfare, Cognitive Radar, Waveform Design, Adaptive Beamsteering, MIMO, 5G



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