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HODGKISS, WILLIAM

Professor

Degrees:

• B.S., Bucknell University
• M.S., Duke University
• Ph.D., Duke University

Research Interests:

• Adaptive digital signal processing and time series analysis with applications to adaptive array processing
• Time-evolving spatial distribution and statistical characterization of ambient ocean noise
• Propagation of acoustic energy through the water column and its interaction with the surface and bottom
• Matched-field processing and full-field inversions for water column and seafloor geoacoustic parameters
• Acoustic communications
• Tropospheric electromagnetic wave propagation and environmental parameter inversions
• Wireless sensor networks
• Software defined radio

Courses Recently Taught:

• ECE156: Sensor Networks
• ECE251A: Digital Signal Processing I
• ECE251B: Digital Signal Processing II
• ECE251D: Array Processing
• MAE149: Sensor Networks
• SIO 207B: Digital Signal Processing I
• SIO207A: Fundamentals/Dig Sign Process
• SIO207B: Digital Signal Processing I
• SIO207C: Digital Signal Processing II
• SIO207D: Array Processing
• SIO238: Sensor Networks

Honors and Awards:

• SIO Graduate Teaching Award 2006-07

Mentoring:

• Cho, Steve (Graduate; 2008-)
• Menon, Ravishankar (Graduate; 2008-)
• Ray, Tim (Graduate; 2008-)
• Denton, Susie (Graduate; 2007-)
• Yardim, Caglar (Post Doc; 2007-)
• Huang, Chen-Fen (Post Doc; 2005-2007)
• Atanassov, Kalin (Graduate; 2004-)
• Yen, Anton (Graduate; 2004-)
• Raghukumar, Kaus (Graduate; 2003-2009)
• Wood, Leslie (Graduate; 2003-2008)
• Sifferlen, Jim (Graduate; 2002-2008)
• Yardim, Caglar (Graduate; 2002-2007)
• Huang, Chen-Fen (Graduate; 2000-2005)
• Edelmann, Geoff (Graduate; 1997-2000)

C. Yardim, P. Gerstoft, and W.S. Hodgkiss, “Sensitivity analysis and performance estimation of refractivity from clutter techniques,” Radio Sci. 44, RS1008, DOI: 10.1029/2008RS003897 (2009).

C-F. Huang, P. Gerstoft and W.S. Hodgkiss, “Statistical estimation of source location in presence of geoacoustic inversion uncertainty,” J. Acoust. Soc. Am, 125(4): EL171-EL176, DOI: 10.1121/1.3097690 (2009).

C. Yardim, P. Gerstoft, and W.S. Hodgkiss, "Tracking of geoacoustic parameters using Kalman and particle filters," J. Acoust. Soc. Am. 125(2): 746-760, DOI: 10.1121/1.3050280 (2009).

H.C. Song, W.A. Kuperman, and W.S. Hodgkiss, “Basin-scale time reversal communications,” J. Acoust. Soc. Am. 125(1): 212-217, DOI: 10.1121/1.3021435 (2009).

P. Roux, B.D. Cornuelle, W.A. Kuperman, and W.S. Hodgkiss, “The structure of ray-like arrivals in a shallow water waveguide,” J. Acoust. Soc. Am. 124(6): 3430-3439, DOI: 10.1121/1.2996330 (2008).

J. Traer, P. Gerstoft, P.D. Bromirski, W.S. Hodgkiss, and L.A. Brooks, "Shallow-water seismoacoustic noise generated by tropical storms Ernesto and Florence," J. Acoust. Soc. Am. 124(3): EL170-EL176, DOI: 10/1121/1.2968296 (2008).

J.F. Sifferlen, H.C. Song, W.S. Hodgkiss, W.A. Kuperman, and M. Stevenson, “An iterative equalization and decoding approach for underwater acoustic communication,” IEEE J. Oceanic Engr. 33(2): 182-197, DOI: 10.1109/JOE.2008.923552 (2008).

K. Raghukumar, B.D. Cornuelle, W.S. Hodgkiss, and W.A. Kuperman, “Pressure sensitivity kernels applied to time-reversal acoustics,” J. Acoust. Soc. Am. 124(1): 98-112, DOI: 10.1121/1.2924130 (2008).

C-F. Huang, P. Gerstoft, and W.S. Hodgkiss, “Effect of ocean sound speed uncertainty on matched-field geoacoustic inversion,” J. Acoust. Soc. Am. 123(6): EL162-EL168, DOI:10.1121/1.2908406 (2008).

P. Gerstoft, W.S. Hodgkiss, M. Siderius, C-F. Huang, and C.H. Harrison, “Passive fathometer processing,” J. Acoust. Soc. Am. 123(3): 1297-1305, DOI: 10.1121/1.2831930 (2008).

A. Song, M. Badiey, H.C. Song, W.S. Hodgkiss, M.B. Porter, and the KauaiEx Group, “Impact of ocean variability on coherent underwater acoustic communications during the auai experiment (KauaiEx),” J. Acoust. Soc. Am. 123(2): 856-865, DOI: 10.1121/1.2828055 (2008).

C. Yardim, P. Gerstoft, and W.S. Hodgkiss, “Tracking refractivity from clutter using Kalman and particle filters, “IEEE Trans. Antennas Propagat. 56: 1058-1066, DOI:10.1109/TAP.2008.919205 (2008).

H.C. Song, W.S. Hodgkiss, W.A. Kuperman, K.G. Sabra, T. Akal, and M. Stevenson, “Passive reverberation nulling for target enhancement,” J. Acoust. Soc. Am. 122(6): 3296-3303, DOI: 10.1121/1.2799508 (2007).

Y-H. Goh, P. Gerstoft, W.S. Hodgkiss, and C-F. Huang, “Statistical estimation of transmission loss from geoacoustic inversion using a towed array,” J. Acoust. Soc. Am. 122(5): 2571-2579, DOI: 10.1121/1.2782915 (2007).

H.C. Song, W.S. Hodgkiss, W.A. Kuperman, T. Akal, and M. Stevenson, “Multiuser communications using passive time reversal,” J. Oceanic Engr. 32(4): 915-926, DOI: 10.1109/JOE.2007.904311 (2007).

C. Yardim, P. Gerstoft, and W.S. Hodgkiss, “Statistical maritime radar duct estimation using hybrid genetic algorithm – Markov chain Monte Carlo method, “ Radio Sci. 42, RS3014, DOI:10.1029/2006RS003561 (2007).

C-F. Huang, P. Gerstoft, and W.S. Hodgkiss, “Validation of statistical estimation of transmission loss in the presence of geoacoustic inversion uncertainty,” J. Acoust. Soc. Am. 120(4): 1932-1941 (2006).

H.C. Song, W.S. Hodgkiss, W.A. Kuperman, W.J. Higley, K. Raghukumar, T. Akal, and M. Stevenson, “Spatial diversity in passive time reversal communications,” J. Acoust. Soc. Am. 120(4): 2067-2076 (2006).

K.G. Sabra, P. Roux, H.C. Song, W.S. Hodgkiss, and W.A. Kuperman, “Experimental demonstration of iterative time-reversed reverberation focusing in a rough waveguide. Application to target detection,” J. Acoust. Soc. Am. 120(3): 1305-1314 (2006).

H.C. Song, W.S. Hodgkiss, W.A. Kuperman, M. Stevenson, and T. Akal, “Improvement of time-reversal communications using adaptive channel equalizers,” IEEE J. Oceanig Engr. 31(2): 487-496 (2006).

C-F. Huang, P. Gerstoft, and W.S. Hodgkiss, “Uncertainty analysis in matched-field geoacoustic inversions,” J. Acoust. Soc. Am. 119(1): 197-207 (2006).

C. Yardim, P. Gerstoft, and W.S. Hodgkiss, “Estimation of radio refractivity from Radar clutter using Bayesian Monte Carlo analysis, “ IEEE Trans. Antennas Propagat. 54(4): 1318-1327 (2006).

P. Gerstoft, C-F. Huang, and W. S. Hodgkiss, “Estimation of transmission loss in the presence of geoacoustic inversion uncertainty,” IEEE J. Oceanic. Engr. 31(2): 299-307 (2006).

H.C. Song, P. Roux, W.S. Hodgkiss, W.A. Kuperman, T. Akal, and M. Stevenson, “Multiple-input/multiple-output coherent time reversal communications in shallow water,” IEEE J. Oceanic Engr. 31(1): 170-178 (2006).