Christ D Richmond, Ph.D.

Research Themes

Applications, Artificial Intelligence & Machine Learning, Hardware & Software, Theory

Education

• B.S. University of Maryland, College Park, 1990
• M.S. Massachusetts Institute of Technology, 1995
• Ph.D. Massachusetts Institute of Technology, 1996

Positions

• Professor in the Department of Electrical and Computer Engineering

Courses Taught

• ECE 590: Advanced Topics in Electrical and Computer Engineering
• ECE 585: Signal Detection and Extraction Theory
• ECE 581: Random Signals and Noise

Publications

• Richmond CD. On the Misspecified Cramu00e9r-Rao Bound and Elliptically Symmetric Distributions. In: 2025 59th Annual Conference on Information Sciences and Systems Ciss 2025. 2025.
• Richmond CD, Bondre AS. Estimation and Detection Under Misspecification and Complex Elliptically Symmetric Distributions. In: Elliptically Symmetric Distributions in Signal Processing and Machine Learning. 2024. p. 187u2013246.
• Richmond CD. Clutter Subspace-Based Space-Time Adaptive Radar Detectors. In: Conference Record Asilomar Conference on Signals Systems and Computers. 2024. p. 1757u201361.
• Bondre AS, Richmond CD. On SINR Loss-Based Robust ABF Under Mismatch and Signal Contamination. In: Conference Record Asilomar Conference on Signals Systems and Computers. 2024. p. 1476u201380.
• Bondre AS, Richmond CD, Michelusi N. Delay-Doppler Parameter Estimation for DFRC-OTFS Using 2D Root-MUSIC. In: Proceedings of the IEEE Radar Conference. 2024.
• Mueller E, Martinez M, Richmond C, Krolik J. Sample-Starved Wavefront Adaptive Sensing and GLRT for MTI Radar. In: Proceedings of the IEEE Radar Conference. 2024.
• Ali T, Richmond CD. Waveform Optimization for Channel Matrix-Based Cognitive Radar/Sonar. In: Proceedings of the IEEE Radar Conference. 2024.
• Ali T, Richmond CD. Performance Assessment of GLRT Statistics for Channel Matrix-Based Cognitive Radar. In: Conference Record Asilomar Conference on Signals Systems and Computers. 2024. p. 223u20137.
• Szeto M, Andert E, Shrivastava A, Reisslein M, Lin CW, Richmond C. B-AWARE: Blockage Aware RSU Scheduling for 5G Enabled Autonomous Vehicles. ACM Transactions on Embedded Computing Systems. 2023 Sep 9;22(5 s).
• Bondre AS, Richmond CD, Alkhateeb A, Michelusi N. Sparse Delay-Doppler Channel Estimation for OTFS Modulation Using 2D-Music. In: ICASSP IEEE International Conference on Acoustics Speech and Signal Processing Proceedings. 2023.
• Ali T, Richmond CD. Asymptotic Distribution of Channel Matrix-Based GLRT for Cognitive Radar/Sonar. In: Conference Record Asilomar Conference on Signals Systems and Computers. 2023. p. 1255u20138.
• Ali T, Richmond CD. Linear Time Varying Channel Matrix Approach for Modeling MIMO Radar Returns. In: Proceedings of the IEEE Radar Conference. 2023.
• Ali T, Bondre AS, Richmond CD. Model-Aided Data Driven Adaptive Target Detection for Channel Matrix-Based Cognitive Sonar. In: Proceedings of Meetings on Acoustics. 2022.
• Bondre AS, Richmond CD. On the Zak Transform-based Interpretation of OTFS Modulation. In: Conference Record Asilomar Conference on Signals Systems and Computers. 2022. p. 715u201321.
• Bondre AS, Richmond CD. Dual-Use of OTFS Architecture for Pulse Doppler Radar Processing. In: Proceedings of the IEEE Radar Conference. 2022.
• Ali T, Cochran D, Richmond CD. On the False Alarm Rate of Adaptive Detection Algorithms for Channel Matrix-Based Cognitive Radar/Sonar. In: Conference Record Asilomar Conference on Signals Systems and Computers. 2022. p. 1126u201330.
• Ali T, Bondre AS, Richmond CD. Adaptive Detection Algorithms for Channel Matrix-Based Cognitive Radar/Sonar. In: Proceedings of the IEEE Radar Conference. 2022.
• Bondre AS, Richmond CD. Theoretical Analysis of a Symmetric Two-Stage Change Detector for SAR Images. IEEE Transactions on Geoscience and Remote Sensing. 2022 Jan 1;60.
• Ali T, Richmond CD. Optimal Target Detection for Random Channel Matrix-Based Cognitive Radar/Sonar. In: IEEE National Radar Conference Proceedings. 2021.
• Coluccia A, Ricci G, Richmond CD. Adaptive Radar Detection without Secondary Data for Uncooperative Spectrum Sharing Scenarios. IEEE Transactions on Signal Processing. 2021 Jan 1;69:3206u201319.
• Bondre AS, Richmond CD. Asymptotic distribution of generalized likelihood ratio test under model misspecification with application to cooperative radar-communications. In: ICASSP IEEE International Conference on Acoustics Speech and Signal Processing Proceedings. 2021. p. 8463u20137.
• Richmond CD, Alhowaish A. On Misspecified Parameter Bounds with Application to Sparse Bayesian Learning. In: Conference Record Asilomar Conference on Signals Systems and Computers. 2020. p. 1472u20136.
• Bondre AS, Ali T, Richmond CD. Bounds on Bearing, Symbol, and Channel Estimation under Model Misspecification. In: Conference Record Asilomar Conference on Signals Systems and Computers. 2020. p. 791u20136.
• Moraffah B, Richmond C, Moraffah R, Papandreou-Suppappola A. METRIC-Bayes: Measurements Estimation for Tracking in High Clutter using Bayesian Nonparametrics. In: Conference Record Asilomar Conference on Signals Systems and Computers. 2020. p. 1518u201322.
• Ali T, Bondre AS, Richmond CD. On Wilks' Theorem for Generalized Likelihood Ratio Test Performance of Cooperative Radar-Communications. In: IEEE National Radar Conference Proceedings. 2020.
• Herschfelt A, Chiriyath A, Bliss DW, Richmond CD, Mitra U, Blunt SD. Vehicular RF Convergence: Simultaneous Radar, Communications, and PNT for Urban Air Mobility and Automotive Applications. In: IEEE National Radar Conference Proceedings. 2020.
• Richmond CD. Caponu2013Bartlett cross-spectrum and a perspective on robust adaptive filtering. Signal Processing. 2020 Jun 1;171.
• Bondre AS, Richmond CD. On threshold selection for improved SAR two-stage change detection. In: 2020 IEEE International Radar Conference Radar 2020. 2020. p. 214u20139.
• Chiriyath AR, Richmond CD, Bliss DW. Simultaneous Track and Search Multiple-Channel Multiple-User Receiver (MCMUR) for Joint Radar-Communications Systems. In: Conference Record Asilomar Conference on Signals Systems and Computers. 2019. p. 544u20139.
• Krishnamurthy S, Bliss DW, Richmond CD, Tarokh V. Peak sidelobe level gumbel distribution of antenna arrays with random phase centers. IEEE Transactions on Antennas and Propagation. 2019 Aug 1;67(8):5399u2013410.
• Richmond CD. On Constraints in Parameter Estimation and Model Misspecification. In: 2018 21st International Conference on Information Fusion Fusion 2018. 2018. p. 1080u20135.
• Richmond CD. Generalized Likelihood Ratio Test Performance for Cooperative Radar-Communications. In: Conference Record Asilomar Conference on Signals Systems and Computers. 2018. p. 957u201361.
• Richmond CD, Basu P. Architectures for cooperative radar-communications: Average vs. generalized likelihood ratio tests. In: 2018 IEEE Radar Conference Radarconf 2018. 2018. p. 1584u20138.
• Fortunati S, Gini F, Greco MS, Richmond CD. Performance bounds for parameter estimation under misspecified models: Fundamental findings and applications. IEEE Signal Processing Magazine. 2017 Nov 1;34(6):142u201357.
• Richmond CD, Basu P. Bayesian framework and radar: On misspecified bounds and radar-communication cooperation. In: IEEE Workshop on Statistical Signal Processing Proceedings. 2016.
• Richmond CD, Basu P, Learned RE, Vian J, Worthen A, Lockard M. Performance bounds on cooperative radar and communication systems operation. In: 2016 IEEE Radar Conference Radarconf 2016. 2016.
• Parker PA, Richmond CD. Methods and bounds for waveform parameter estimation with a misspecified model. In: Conference Record Asilomar Conference on Signals Systems and Computers. 2016. p. 1702u20136.
• Raghavan RS, Kraut S, Richmond CD. Subspace detection for adaptive radar: Detectors and performance analysis. In: Modern Radar Detection Theory. 2016. p. 43u201383.
• Cha M, Phillips RD, Wolfe PJ, Richmond CD. Two-Stage Change Detection for Synthetic Aperture Radar. IEEE Transactions on Geoscience and Remote Sensing. 2015 Dec 1;53(12):6547u201360.
• Kantor JM, Richmond CD, Correll B, Bliss DW. Prior mismatch in Bayesian direction of arrival estimation for sparse arrays. In: IEEE National Radar Conference Proceedings. 2015. p. 811u20136.
• Krishnamurthy S, Bliss D, Richmond C, Tarokh V. Peak sidelobe level gumbel distribution for arrays of randomly placed antennas. In: IEEE National Radar Conference Proceedings. 2015. p. 1671u20136.
• Richmond CD, Horowitz LL. Parameter bounds on estimation accuracy under model misspecification. IEEE Transactions on Signal Processing. 2015 May 1;63(9):2263u201378.
• Kantor JM, Richmond CD, Bliss DW, Correll B. Mean-squared-error prediction for bayesian direction-of-arrival estimation. IEEE Transactions on Signal Processing. 2013 Sep 9;61(19):4729u201339.
• Richmond CD, Horowitz LL. Parameter bounds under misspecified models. In: Conference Record Asilomar Conference on Signals Systems and Computers. 2013. p. 176u201380.
• Richmond CD, Forsythe KW, Flynn CR. Copy correlation direction-of-arrival estimation performance with a stochastic weight vector. In: Conference Record Asilomar Conference on Signals Systems and Computers. 2013. p. 2155u20139.
• Richmond CD, Horowitz LL. Aspects of threshold region mean squared error prediction: Method of interval errors, bounds, Taylor's theorem and extensions. In: Conference Record Asilomar Conference on Signals Systems and Computers. 2012. p. 13u20137.
• Lee N, Richmond CD, Kmelnitsky V. Mean squared error performance of adaptive matched field localization under environmental uncertainty. In: 2012 IEEE Statistical Signal Processing Workshop Ssp 2012. 2012. p. 812u20135.
• Richmond CD, Forsythe KW, Flynn CR. Copy correlation direction-of-arrival estimation performance. In: Proceedings of the IEEE Sensor Array and Multichannel Signal Processing Workshop. 2012. p. 273u20136.
• Richmond CD, Geddes RL, Movassagh R, Edelman A. Performance of sample covariance based capon bearing only tracker. In: Conference Record Asilomar Conference on Signals Systems and Computers. 2011. p. 2036u20139.
• Richmond CD. Numerically efficient mean squared error threshold SNR prediction for adaptive arrays. In: 2010 IEEE Sensor Array and Multichannel Signal Processing Workshop SAM 2010. 2010. p. 101u20134.
• Richmond CD, Geddes RL, Movassagh R, Edelman A. Sample covariance based estimation of Capon algorithm error probabilities. In: Conference Record Asilomar Conference on Signals Systems and Computers. 2010. p. 1842u20135.
• Richmond CD. Statistical analysis of Capon-Bartlett 2-D cross spectrum. In: ICASSP IEEE International Conference on Acoustics Speech and Signal Processing Proceedings. 2010. p. 2634u20137.
• Renaux A, Forster P, Larzabal P, Richmond CD, Nehorai A. A fresh look at the Bayesian bounds of the Weiss-Weinstein family. IEEE Transactions on Signal Processing. 2008 Nov 3;56(11):5334u201352.
• Bliss DW, Forsythe KW, Richmond CD. MIMO radar: Joint array and waveform optimization. In: Conference Record Asilomar Conference on Signals Systems and Computers. 2007. p. 207u201311.
• Richmond CD. Cross coherence and joint PDF of the Bartlett and Capon power spectral estimates. In: ICASSP IEEE International Conference on Acoustics Speech and Signal Processing Proceedings. 2007. p. II901u20134.
• Renaux A, Forster P, Larrabal P, Richmond C. The bayesian abel bound on the mean square error. In: Bayesian Bounds for Parameter Estimation and Nonlinear Filtering Tracking. 2007. p. 176u20139.
• Richmond CD. Capon Algorithm Mean-Squared Error Threshold SNR Prediction and Probability of Resolution. In: Bayesian Bounds for Parameter Estimation and Nonlinear Filtering Tracking. 2007. p. 289u2013305.
• Xu W, Baggeroer AB, Richmond CD. Bayesian bounds for matchedfield parameter estimation. In: Bayesian Bounds for Parameter Estimation and Nonlinear Filtering Tracking. 2007. p. 516u201328.
• Richmond CD. Mean-Squared Error and Threshold SNR Prediction of Maximum-Likelihood Signal Parameter Estimation With Estimated Colored Noise Covariances. In: Bayesian Bounds for Parameter Estimation and Nonlinear Filtering Tracking. 2007. p. 306u201324.
• Richmond CD. On the threshold region mean-squared error performance of maximum-likelihood direction-of-arrival estimation in the presence of signal model mismatch. In: 2006 IEEE Sensor Array and Multichannel Signal Processing Workshop Proceedings SAM 2006. 2006. p. 268u201372.
• Renaux A, Forster P, Larzabal P, Richmond C. The Bayesian ABEL bound on the mean square ERROR. In: ICASSP IEEE International Conference on Acoustics Speech and Signal Processing Proceedings. 2006. p. III9u201312.
• Richmond CD. Mean-squared error and threshold SNR prediction of maximum-likelihood signal parameter estimation with estimated colored noise covariances. IEEE Transactions on Information Theory. 2006 May 1;52(5):2146u201364.
• Richmond CD, Rao Nadakuditi R, Edelman A. Asymptotic mean squared error performance of diagonally loaded Capon-MVDR processor. In: Conference Record Asilomar Conference on Signals Systems and Computers. 2005. p. 1711u20136.
• Richmond CD. Capon Algorithm Mean-Squared Error Threshold SNR Prediction and Probability of Resolution. IEEE Transactions on Signal Processing. 2005 Jan 1;53(8):2748u201364.
• Richmond CD. On the probability of resolution for the amplitude and phase estimation (APES) spectral estimator. In: ICASSP IEEE International Conference on Acoustics Speech and Signal Processing Proceedings. 2005. p. 1025u20138.
• Xu W, Baggeroer AB, Richmond CD. Bayesian bounds for matched-field parameter estimation. IEEE Transactions on Signal Processing. 2004 Dec 1;52(12):3293u2013305.
• Premus VE, Ward J, Richmond CD. Mode filtering approaches to acoustic source depth discrimination. In: Conference Record Asilomar Conference on Signals Systems and Computers. 2004. p. 1415u201320.
• Richmond CD. The capon-MVDR algorithm: Threshold SNR prediction and the probability of resolution. In: ICASSP IEEE International Conference on Acoustics Speech and Signal Processing Proceedings. 2004. p. II217u201320.
• Xu W, Richmond CD. Quantitative ambiquity analysis for matched-field source localization under spatially-correlated noise field. In: Oceans Conference Record IEEE. 2003. p. 922u20137.
• Richmond CD. Mean squared error threshold prediction of adaptive maximum likelihood techniques. In: Conference Record of the Asilomar Conference on Signals Systems and Computers. 2003. p. 1848u201352.
• Richmond CD. Statistics of adaptive nulling and use of the generalized eigenrelation (GER) for modeling inhomogeneities in adaptive processing. IEEE Transactions on Signal Processing. 2000 May 1;48(5):1263u201373.
• Richmond CD. Performance of a class of adaptive detection algorithms in nonhomogeneous environments. IEEE Transactions on Signal Processing. 2000 May 1;48(5):1248u201362.
• Richmond CD. Performance of the adaptive sidelobe blanker detection algorithm in homogeneous environments. IEEE Transactions on Signal Processing. 2000 May 1;48(5):1235u201347.
• Richmond CD. MVDR adaptive sidelobes: Extending Ruze's formula and providing an exact calculation of the probability of sidelobe suppression. In: Proceedings of the IEEE Sensor Array and Multichannel Signal Processing Workshop. 2000. p. 73u20136.
• Richmond CD. Performance of the adaptive sidelobe blanker detection algorithm in nonhomogeneous environments. IEEE Transactions on Signal Processing. 1999 Jan 1;47(1):280.
• Richmond CD. Response of sample covariance based MVDR beamformer to imperfect look and inhomogeneities. IEEE Signal Processing Letters. 1998 Dec 1;5(12):325u20137.
• Richmond CD. Statistics of adaptive nulling and modeling inhomogeneities in adaptive processing. In: IEEE Signal Processing Workshop on Statistical Signal and Array Processing Ssap. 1998. p. 65u20138.
• Kreithen DE, Pearson CF, Richmond CD. Adaptive sidelobe blanker: A novel method of performance evaluation and threshold setting in the presence of inhomogeneous clutter. In: Conference Record of the Asilomar Conference on Signals Systems and Computers. 1998. p. 528u201331.
• Richmond CD. Theoretical performance of a class of space-time adaptive detection and training strategies for airborne radar. In: Conference Record of the Asilomar Conference on Signals Systems and Computers. 1998. p. 1327u201331.
• Richmond CD. Statistics of adaptive nulling and modeling inhomogeneities in adaptive processing. IEEE Transactions on Signal Processing. 1998 Dec 1;46(8):2277.
• Richmond CD. Analysis of an adaptive detection algorithm for non-homogeneous environments. In: ICASSP IEEE International Conference on Acoustics Speech and Signal Processing Proceedings. 1998. p. 2005u20138.
• Richmond CD. Statistical performance analysis of the adaptive sidelobe blanker detection algorithm. In: Conference Record of the Asilomar Conference on Signals Systems and Computers. 1998. p. 872u20136.
• Richmond CD. A note on non-Gaussian adaptive array detection and signal parameter estimation. IEEE Signal Processing Letters. 1996 Dec 1;3(8):251u20132.
• Richmond CD. Derived PDF of maximum likelihood signal estimator which employs an estimated noise covariance. IEEE Transactions on Signal Processing. 1996 Dec 1;44(2):305u201315.
• Richmond CD. PDF's, confidence regions, and relevant statistics for a class of sample covariance-based array processors. IEEE Transactions on Signal Processing. 1996 Dec 1;44(7):1779u2013993.
• Richmond CD. Adaptive array processing in non-Gaussian environments. In: IEEE Signal Processing Workshop on Statistical Signal and Array Processing Ssap. 1996. p. 562u20135.
• Richmond CD. Exact pdfs for sample covariance based array processors with elliptically contoured data. In: ICASSP IEEE International Conference on Acoustics Speech and Signal Processing Proceedings. 1996. p. 2849u201351.