178 publications

2022

• Gemba, K. L., Vazquez, H. J., Sarkar, J., Tippman, J. D., Cornuelle, B., Hodgkiss, W. S., & Kuperman, W. A. (2022). Moving source ocean acoustic tomography with uncertainty quantification using controlled source-tow observations. The Journal of the Acoustical Society of America, 151(2), 861-880. doi: 10.1121/10.0009268

2021

• Tollefsen, D., Hodgkiss, W. S., Dosso, S. E., Bonnel, J., & Knobles, D. P. (2021). Probabilistic estimation of merchant ship source levels in an uncertain shallow-water environment. Ieee Journal of Oceanic Engineering, 10. doi: 10.1109/joe.2021.3113506
• Castro-Correa, J. A., Badiey, M., Neilsen, T. B., Knobles, D. P., & Hodgkiss, W. S. (2021). Impact of data augmentation on supervised learning for a moving mid-frequency source. Journal of the Acoustical Society of America, 150(5), 3914-3928. doi: 10.1121/10.0007284
• Gemba, K. L., Vazquez, H. J., Fialkowski, J., Edelmann, G. F., Dzieciuch, M. A., & Hodgkiss, W. S. (2021). A performance comparison between m-sequences and linear frequency-modulated sweeps for the estimation of travel-time with a moving source. Journal of the Acoustical Society of America, 150(4), 2613-2623. doi: 10.1121/10.0006656
• Escobar-Amado, C. D., Neilsen, T. B., Castro-Correa, J. A., Van Komen, D. F., Badiey, M., Knobles, D. P., & Hodgkiss, W. S. (2021). Seabed classification from merchant ship-radiated noise using a physics-based ensemble of deep learning algorithms. Journal of the Acoustical Society of America, 150(2), 1434-1447. doi: 10.1121/10.0005936
• Knobles, D. P., Wilson, P. S., Neilsen, T. B., & Hodgkiss, W. S. (2021). Influence of seabed on very low frequency sound recorded during passage of merchant ships on the New England shelf. Journal of the Acoustical Society of America, 149(5), 3294-3300. doi: 10.1121/10.0004991
• Van Komen, D. F., Neilsen, T. B., Mortenson, D. B., Acree, M. C., Knobles, D. P., Badiey, M., & Hodgkiss, W. S. (2021). Seabed type and source parameters predictions using ship spectrograms in convolutional neural networksa). Journal of the Acoustical Society of America, 149(2), 1198-1210. doi: 10.1121/10.0003502
• Richards, E. L., Song, H. C., & Hodgkiss, W. S. (2021). Observations of scatter from surface reflectors with Doppler sensitive probe signals. JASA Express Letters, 1(1), 016001. doi: 10.1121/10.0003000
• Neilsen, T. B., Escobar-Amado, C. D., Acree, M. C., Hodgkiss, W. S., Van Komen, D. F., Knobles, D. P., ... Castro-Correa, J. (2021). Learning location and seabed type from a moving mid-frequency sourcea). Journal of the Acoustical Society of America, 149(1), 692-705. doi: 10.1121/10.0003361

2019

• Hefner, B. T., & Hodgkiss, W. S. (2019). Reverberation due to a moving, narrowband source in an ocean waveguide. Journal of the Acoustical Society of America, 146(3), 1661-1670. doi: 10.1121/1.5126023
• Nannuru, S., Gemba, K. L., Gerstoft, P., Hodgkiss, W. S., & Mecklenbrauker, C. F. (2019). Sparse Bayesian learning with multiple dictionaries. Signal Processing, 159, 159-170. doi: 10.1016/j.sigpro.2019.02.003

2018

• Richards, E. L., Song, H. C., & Hodgkiss, W. S. (2018). Acoustic scattering comparison of Kirchhoff approximation to Rayleigh-Fourier method for sinusoidal surface waves at low grazing angles. Journal of the Acoustical Society of America, 144(3), 1269-1278. doi: 10.1121/1.5052256
• Yuan, Z., Richards, E. L., Song, H. C., Hodgkiss, W. S., & Yan, S. (2018). Calibration of vertical array tilt using snapping shrimp sound. The Journal of the Acoustical Society of America, 144(3), 1203-1210. doi: 10.1121/1.5054089
• Gemba, K. L., Sarkar, J., Cornuelle, B., Hodgkiss, W. S., & Kuperman, W. A. (2018). Estimating relative channel impulse responses from ships of opportunity in a shallow water environment. The Journal of the Acoustical Society of America, 144(3), 1231-1244. doi: 10.1121/1.5052259
• Verlinden, C. M. A., Sarkar, J., Hodgkiss, W. S., Kuperman, W. A., & Sabra, K. G. (2018). Passive acoustic tracking using a library of nearby sources of opportunity. Journal of the Acoustical Society of America, 143(2), 878-890. doi: 10.1121/1.5022782
• Song, H., Cho, C., Hodgkiss, W., Nam, S., Kim, S., & Kim, B. (2018). Underwater sound channel in the northeastern East China Sea. Ocean Engineering, 147, 370-374. doi: 10.1016/j.oceaneng.2017.10.045

2017

• Tenorio-Halle, L., Thode, A. M., Sarkar, J., Verlinden, C., Tippmann, J., Hodgkiss, W. S., & Kuperman, W. A. (2017). A double-difference method for high-resolution acoustic tracking using a deep-water vertical array. Journal of the Acoustical Society of America, 142(6), 3474-3485. doi: 10.1121/1.5014050
• Gemba, K. L., Nannuru, S., Gerstoft, P., & Hodgkiss, W. S. (2017). Multi-frequency sparse Bayesian learning for robust matched field processing. Journal of the Acoustical Society of America, 141(5), 3411-3420. doi: 10.1121/1.4983467
• Das, A., Hodgkiss, W. S., & Gerstoft, P. (2017). Peer-reviewed technical communication-coherent multipath direction-of-arrival resolution using compressed sensing. Ieee Journal of Oceanic Engineering, 42(2), 494-505. doi: 10.1109/joe.2016.2576198
• Tollefsen, D., Gerstoft, P., & Hodgkiss, W. S. (2017). Multiple-array passive acoustic source localization in shallow water. Journal of the Acoustical Society of America, 141(3), 1501-1513. doi: 10.1121/1.4976214
• Gemba, K. L., Hodgkiss, W. S., & Gerstoft, P. (2017). Adaptive and compressive matched field processing. Journal of the Acoustical Society of America, 141(1), 92-103. doi: 10.1121/1.4973528

2016

• Tippmann, J. D., Sarkar, J., Verlinden, C. M. A., Hodgkiss, W. S., & Kuperman, W. A. (2016). Toward ocean attenuation tomography: Determining acoustic volume attenuation coefficients in seawater using eigenray amplitudes. Journal of the Acoustical Society of America, 140(3), EL247-EL250. doi: 10.1121/1.4962348
• Cho, C., Song, H. C., & Hodgkiss, W. S. (2016). Robust source-range estimation using the array/waveguide invariant and a vertical array. The Journal of the Acoustical Society of America, 139(1), 63-69. doi: 10.1121/1.4939121

2015

• Verlinden, C. M. A., Sarkar, J., Hodgkiss, W. S., Kuperman, W. A., & Sabra, K. G. (2015). Passive acoustic source localization using sources of opportunity. Journal of the Acoustical Society of America, 138(1), EL54-EL59. doi: 10.1121/1.4922763
• Song, H. C., & Hodgkiss, W. S. (2015). Self-synchronization and spatial diversity of passive time reversal communication. Journal of the Acoustical Society of America, 137(5), 2974-2977. doi: 10.1121/1.4919324
• Tan, B. A., Gerstoft, P., Yardim, C., & Hodgkiss, W. S. (2015). Change-point detection for recursive Bayesian geoacoustic inversions. Journal of the Acoustical Society of America, 137(4), 1962-1970. doi: 10.1121/1.4916887

2014

• Tan, B. A., Gerstoft, P., Yardim, C., & Hodgkiss, W. S. (2014). Recursive Bayesian synthetic aperture geoacoustic inversion in the presence of motion dynamics. Journal of the Acoustical Society of America, 136(3), 1187-1198. doi: 10.1121/1.4892788
• Menon, R., Gerstoft, P., & Hodgkiss, W. S. (2014). On the apparent attenuation in the spatial coherence estimated fromseismic arrays. Journal of Geophysical Research-Solid Earth, 119(4), 3115-3132. doi: 10.1002/2013jb010835
• Yardim, C., Gerstoft, P., Hodgkiss, W. S., & Traer, J. (2014). Compressive geoacoustic inversion using ambient noise. Journal of the Acoustical Society of America, 135(3), 1245-1255. doi: 10.1121/1.4864792
• Carriere, O., Gerstoft, P., & Hodgkiss, W. S. (2014). Spatial filtering in ambient noise interferometry. Journal of the Acoustical Society of America, 135(3), 1186-1196. doi: 10.1121/1.4863658

2013

• Karimian, A., Yardim, C., Haack, T., Gerstoft, P., Hodgkiss, W. S., & Rogers, T. (2013). Toward the assimilation of the atmospheric surface layer using numerical weather prediction and radar clutter observations. Journal of Applied Meteorology and Climatology, 52(10), 2345-2355.
• Fried, S. E., Walker, S. C., Hodgkiss, W. S., & Kuperman, W. A. (2013). Measuring the effect of ambient noise directionality and split-beam processing on the convergence of the cross-correlation function. Journal of the Acoustical Society of America, 134(3), 1824-1832. doi: 10.1121/1.4816490
• Song, H. C., & Hodgkiss, W. S. (2013). Efficient use of bandwidth for underwater acoustic communication. Journal of the Acoustical Society of America, 134(2), 905-908. doi: 10.1121/1.4812762
• Tan, B. A., Gerstoft, P., Yardim, C., & Hodgkiss, W. S. (2013). Broadband synthetic aperture geoacoustic inversion. Journal of the Acoustical Society of America, 134(1), 312-322. doi: 10.1121/1.4807567
• Yardim, C., Gerstoft, P., & Hodgkiss, W. S. (2013). Particle smoothers in sequential geoacoustic inversion. The Journal of the Acoustical Society of America, 134(2), 971-981.
• Menon, R., Gerstoft, P., & Hodgkiss, W. S. (2013). Effect of Medium Attenuation on the Asymptotic Eigenvalues of Noise Covariance Matrices. Ieee Signal Processing Letters, 20(5), 435-438. doi: 10.1109/lsp.2013.2250500
• Roux, P., Kuperman, W. A., Cornuelle, B. D., Aulanier, F., Hodgkiss, W. S., & Song, H. C. (2013). Analyzing sound speed fluctuations in shallow water from group-velocity versus phase-velocity data representation. Journal of the Acoustical Society of America, 133(4), 1945-1952. doi: 10.1121/1.4792354
• Lani, S. W., Sabra, K. G., Hodgkiss, W. S., Kuperman, W. A., & Roux, P. (2013). Coherent processing of shipping noise for ocean monitoring. Journal of the Acoustical Society of America, 133(2), EL108-EL113. doi: 10.1121/1.4776775
• Cho, S. E., Song, H. C., & Hodgkiss, W. S. (2013). Multiuser acoustic communications with mobile users. Journal of the Acoustical Society of America, 133(2), 880-890. doi: 10.1121/1.4773267

2012

• Menon, R., Gerstoft, P., & Hodgkiss, W. S. (2012). Cross-correlations of diffuse noise in an ocean environment using eigenvalue based statistical inference. Journal of the Acoustical Society of America, 132(5), 3213-3224. doi: 10.1121/1.4754558
• Gerstoft, P., Menon, R., Hodgkiss, W. S., & Mecklenbrauker, C. F. (2012). Eigenvalues of the sample covariance matrix for a towed array. Journal of the Acoustical Society of America, 132(4), 2388-2396. doi: 10.1121/1.4746024
• Karimian, A., Yardim, C., Gerstoft, P., Hodgkiss, W. S., & Barrios, A. E. (2012). Multiple grazing angle sea clutter modeling. IEEE Transactions on Antennas and Propagation, 60(9), 4408-4417. doi: 10.1109/tap.2012.2207033
• Leroy, C., Lani, S., Sabra, K. G., Hodgkiss, W. S., Kuperman, W. A., & Roux, P. (2012). Enhancing the emergence rate of coherent wavefronts from ocean ambient noise correlations using spatio-temporal filters. Journal of the Acoustical Society of America, 132(2), 883-893. doi: 10.1121/1.4731231
• Song, H. C., & Hodgkiss, W. S. (2012). Diversity combining for long-range acoustic communication in deep water. Journal of the Acoustical Society of America, 132(2), EL68-EL73. doi: 10.1121/1.4731639
• Menon, R., Gerstoft, P., & Hodgkiss, W. S. (2012). Asymptotic eigenvalue density of noise covariance matrices. IEEE Transactions on Signal Processing, 60(7), 3415-3424. doi: 10.1109/tsp.2012.2193573
• Cho, S. E., Song, H. C., & Hodgkiss, W. S. (2012). Asynchronous multiuser underwater acoustic communications (L). Journal of the Acoustical Society of America, 132(1), 5-8. doi: 10.1121/1.4726029
• Karimian, A., Yardim, C., Hodgkiss, W. S., Gerstoft, P., & Barrios, A. E. (2012). Estimation of radio refractivity using a multiple angle clutter model. Radio Science, 47(Rs0m07). doi: 10.1029/2011rs004701
• Angelico, B. A., Jeszensky, P. J. E., Burt, P. M. S., Hodgkiss, W. S., & Abrao, T. (2012). Comparison of multiple-input single-output single-user ultra-wideband systems with pre-distortion. European Transactions on Telecommunications, 23(3), 240-253. doi: 10.1002/ett.1528
• Yardim, C., Gerstoft, P., & Hodgkiss, W. S. (2012). Sequential geoacoustic inversion at the continental shelfbreak. Journal of the Acoustical Society of America, 131(2), 1722-1732. doi: 10.1121/1.3666012
• Cho, S. E., Song, H. C., & Hodgkiss, W. S. (2012). Multiuser interference cancellation in time-varying channels. Journal of the Acoustical Society of America, 131(2), EL163-EL169. doi: 10.1121/1.3678668
• Kang, T., Song, H. C., & Hodgkiss, W. S. (2012). Long-range multi-carrier acoustic communication in deep water using a towed horizontal array. The Journal of the Acoustical Society of America, 131(6), 4665-4671. doi: 10.1121/1.4711009

2011

• Karimian, A., Yardim, C., Gerstoft, P., Hodgkiss, W. S., & Barrios, A. E. (2011). Refractivity estimation from sea clutter: An invited review. Radio Science, 46(Rs6013). doi: 10.1029/2011rs004818
• Kang, T., Song, H. C., & Hodgkiss, W. S. (2011). Multi-carrier synthetic aperture communication in shallow water: Experimental results. Journal of the Acoustical Society of America, 130(6), 3797-3802. doi: 10.1121/1.3652855
• Yardim, C., Gerstoft, P., & Hodgkiss, W. S. (2011). Range aliasing in frequency coherent geoacoustic inversion. Journal of the Acoustical Society of America, 130(4), EL154-EL160. doi: 10.1121/1.3630021
• Cho, S. E., Song, H. C., & Hodgkiss, W. S. (2011). Successive interference cancellation for underwater acoustic communications. IEEE Journal of Oceanic Engineering, 36(4), 490-501. doi: 10.1109/joe.2011.2158014
• Isukapalli, Y., Song, H. C., & Hodgkiss, W. S. (2011). Stochastic channel simulator based on local scattering functions. Journal of the Acoustical Society of America, 130(4), EL200-EL205. doi: 10.1121/1.3633688
• Angelico, B. A., Burt, P. M. S., Jeszensky, P. J. E., Hodgkiss, W. S., & Abrao, T. (2011). Performance analysis of a single-user MISO ultra-wideband time reversal system with DFE. Telecommunication Systems, 46(4), 333-342. doi: 10.1007/s11235-010-9295-1
• Traer, J., Gerstoft, P., & Hodgkiss, W. S. (2011). Ocean bottom profiling with ambient noise: A model for the passive fathometer. Journal of the Acoustical Society of America, 129(4), 1825-1836. doi: 10.1121/1.3552871
• Gerstoft, P., & Hodgkiss, W. S. (2011). Improving beampatterns of two-dimensional random arrays using convex optimization. Journal of the Acoustical Society of America, 129(4), EL135-EL140. doi: 10.1121/1.3556896
• Song, H. C., Cho, S., Kang, T., Hodgkiss, W. S., & Preston, J. R. (2011). Long-range acoustic communication in deep water using a towed array. Journal of the Acoustical Society of America, 129(3), EL71-EL75. doi: 10.1121/1.3554707
• Park, C., Seong, W., Gerstoft, P., & Hodgkiss, W. S. (2011). Fluctuating arrivals of short-range acoustic data. Journal of the Acoustical Society of America, 129(1), 98-103. doi: 10.1121/1.3514505

2010

• Kang, T., Song, H. C., & Hodgkiss, W. S. (2010). Long-range multi-carrier acoustic communications in shallow water based on iterative sparse channel estimation. Journal of the Acoustical Society of America, 128(6), EL372-EL377. doi: 10.1121/1.3514157
• Song, H. C., Kim, J. S., Hodgkiss, W. S., Kuperman, W. A., & Stevenson, M. (2010). High-rate multiuser communications in shallow water. Journal of the Acoustical Society of America, 128(5), 2920-2925. doi: 10.1121/1.3488309
• Park, C., Seong, W., Gerstoft, P., & Hodgkiss, W. S. (2010). Geoacoustic inversion using backpropagation. IEEE Journal of Oceanic Engineering, 35(4), 722-731. doi: 10.1109/joe.2010.2040659
• Raghukumar, K., Cornuelle, B. D., Hodgkiss, W. S., & Kuperman, W. A. (2010). Experimental demonstration of the utility of pressure sensitivity kernels in time-reversal. Journal of the Acoustical Society of America, 128(3), 989-1003. doi: 10.1121/1.3466858
• Song, H. C., Hodgkiss, W. S., & van Walree, P. A. (2010). Phase-coherent communications without explicit phase tracking. Journal of the Acoustical Society of America, 128(3), 969-972. doi: 10.1121/1.3466860
• Song, A. J., Badiey, M., Song, H. C., & Hodgkiss, W. S. (2010). Impact of source depth on coherent underwater acoustic communications (L). Journal of the Acoustical Society of America, 128(2), 555-558. doi: 10.1121/1.3459843
• Yardim, C., Gerstoft, P., & Hodgkiss, W. S. (2010). Geoacoustic and source tracking using particle filtering: Experimental results. Journal of the Acoustical Society of America, 128(1), 75-87. doi: 10.1121/1.3438475
• Siderius, M., Song, H. C., Gerstoft, P., Hodgkiss, W. S., Hursky, P., & Harrison, C. (2010). Adaptive passive fathometer processing. Journal of the Acoustical Society of America, 127(4), 2193-2200. doi: 10.1121/1.3303985
• Song, H. C., Kim, J. S., Hodgkiss, W. S., & Joo, J. H. (2010). Crosstalk mitigation using adaptive time reversal. Journal of the Acoustical Society of America, 127(2), EL19-EL22. doi: 10.1121/1.3280234

2009

• Song, H. C., Hodgkiss, W. S., Kuperman, W. A., Akal, T., & Stevenson, M. (2009). High-rate synthetic aperture communications in shallow water. Journal of the Acoustical Society of America, 126(6), 3057-3061. doi: 10.1121/1.3257184
• Traer, J., Gerstoft, P., Song, H. C., & Hodgkiss, W. S. (2009). On the sign of the adaptive passive fathometer impulse response. Journal of the Acoustical Society of America, 126(4), 1657-1658. doi: 10.1121/1.3206696
• Song, H. C., Hodgkiss, W. S., Kuperman, W. A., Akal, T., & Stevenson, M. (2009). High-frequency acoustic communications achieving high bandwidth efficiency. Journal of the Acoustical Society of America, 126(2), 561-563. doi: 10.1121/1.3160284
• Huang, C. F., Gerstoft, P., & Hodgkiss, W. S. (2009). Statistical estimation of source location in presence of geoacoustic inversion uncertainty. Journal of the Acoustical Society of America, 125(4), EL171-EL176. doi: 10.1121/1.3097690
• Jasso, H., Hodgkiss, W., Baru, C., Fountain, T., Reich, D., & Warner, K. (2009). Using 9-1-1 call data and the space-time permutation scan statistic for emergency event detection. Government Information Quarterly, 26(2), 265-274. doi: 10.1016/j.giq.2008.12.005
• Yardim, C., Gerstoft, P., & Hodgkiss, W. S. (2009). Tracking of geoacoustic parameters using Kalman and particle filters. Journal of the Acoustical Society of America, 125(2), 746-760. doi: 10.1121/1.3050280
• Yardim, C., Gerstoft, P., & Hodgkiss, W. S. (2009). Sensitivity analysis and performance estimation of refractivity from clutter techniques. Radio Science, 44(Rs1008). doi: 10.1029/2008rs003897
• Song, H. C., Kuperman, W. A., & Hodgkiss, W. S. (2009). Basin-scale time reversal communications. Journal of the Acoustical Society of America, 125(1), 212-217. doi: 10.1121/1.3021435

2008

• Roux, P., Cornuelle, B. D., Kuperman, W. A., & Hodgkiss, W. S. (2008). The structure of raylike arrivals in a shallow-water waveguide. Journal of the Acoustical Society of America, 124(6), 3430-3439. doi: 10.1121/1.2996330
• Traer, J., Gerstoft, P., Bromirski, P. D., Hodgkiss, W. S., & Brooks, L. A. (2008). Shallow-water seismoacoustic noise generated by tropical storms Ernesto and Florence. Journal of the Acoustical Society of America, 124(3), EL170-EL176. doi: 10.1121/1.2968296
• Raghukumar, K., Cornuelle, B. D., Hodgkiss, W. S., & Kuperman, W. A. (2008). Pressure sensitivity kernels applied to time-reversal acoustics. Journal of the Acoustical Society of America, 124(1), 98-112. doi: 10.1121/1.2924130
• Huang, C. F., Gerstoft, P., & Hodgkiss, W. S. (2008). Effect of ocean sound speed uncertainty on matched-field geoacoustic inversion. Journal of the Acoustical Society of America, 123(6), EL162-EL168. doi: 10.1121/1.2908406
• Sifferlen, J. F., Song, H. C., Hodgkiss, W. S., Kuperman, W. A., & Stevenson, J. M. (2008). An iterative equalization and decoding approach for underwater acoustic communication. IEEE Journal of Oceanic Engineering, 33(2), 182-197. doi: 10.1109/joe.2008.923552
• Yardim, C., Gerstoft, P., & Hodgkiss, W. S. (2008). Tracking refractivity from clutter using Kalman and particle filters. IEEE Transactions on Antennas and Propagation, 56(4), 1058-1070. doi: 10.1109/tap.2008.919205
• Gerstoft, P., Hodgkiss, W. S., Siderius, M., Huang, C. F., & Harrison, C. H. (2008). Passive fathometer processing. Journal of the Acoustical Society of America, 123(3), 1297-1305. doi: 10.1121/1.2831930
• Park, G., Rosing, T., Todd, M., Farrar, C., & Hodgkiss, W. (2008). Energy harvesting for structural health monitoring sensor nNetworks. Journal of Infrastructure Systems, 14(1), 64-79. doi: 10.1061/(ASCE)1076-0342(2008)14:1(64)

2007

• Song, H. C., Hodgkiss, W. S., Kuperman, W. A., Sabra, K. G., Akal, T., & Stevenson, M. (2007). Passive reverberation nulling for target enhancement. Journal of the Acoustical Society of America, 122(6), 3296-3303. doi: 10.1121/1.2799508
• Song, H. C., Hodgkiss, W. S., & Kim, S. M. (2007). Performance prediction of passive time reversal communications (L). Journal of the Acoustical Society of America, 122(5), 2517-2518. doi: 10.1121/1.2782820
• Goh, Y. H., Gerstoft, P., Hodgkiss, W. S., & Huang, C. F. (2007). Statistical estimation of transmission loss from geoacoustic inversion using a towed array. Journal of the Acoustical Society of America, 122(5), 2571-2579. doi: 10.1121/1.2782915
• Song, H. C., Hodgkiss, W. S., Kuperman, W. A., Akal, T., & Stevenson, M. (2007). Multiuser communications using passive time reversal. IEEE Journal of Oceanic Engineering, 32(4), 915-926. doi: 10.1109/joe.2007.904311
• Yardim, C., Gerstoft, P., & Hodgkiss, W. S. (2007). Statistical maritime radar duct estimation using hybrid genetic algorithm-Markov chain Monte Carlo method. Radio Science, 42(3). doi: 10.1029/2006rs003561
• Huang, C. F., Gerstoft, P., & Hodgkiss, W. S. (2007). On the effect of error correlation on matched-field geoacoustic inversion. Journal of the Acoustical Society of America, 121(2), EL64-EL69. doi: 10.1121/1.2424267

2006

• Song, H. C., Hodgkiss, W. S., Kuperman, W. A., Higley, W. J., Raghukumar, K., Akal, T., & Stevenson, M. (2006). Spatial diversity in passive time reversal communications. Journal of the Acoustical Society of America, 120(4), 2067-2076. doi: 10.1121/1.2338286
• Huang, C. F., Gerstoft, P., & Hodgkiss, W. S. (2006). Validation of statistical estimation of transmission loss in the presence of geoacoustic inversion uncertainty. Journal of the Acoustical Society of America, 120(4), 1932-1941. doi: 10.1121/1.2261356
• Sabra, K. G., Roux, P., Song, H. C., Hodgkiss, W. S., Kuperman, W. A., Akal, T., & Stevenson, J. M. (2006). Experimental demonstration of iterative time-reversed reverberation focusing in a rough waveguide. Application to target detection. Journal of the Acoustical Society of America, 120(3), 1305-1314. doi: 10.1121/1.2227377
• Gerstoft, P., Huang, C. F., & Hodgkiss, W. S. (2006). Estimation of transmission loss in the presence of geoacoustic inversion uncertainty. IEEE Journal of Oceanic Engineering, 31(2), 299-307. doi: 10.1109/joe.2006.875104
• Song, H. C., Hodgkiss, W. S., Kuperman, W. A., Stevenson, M., & Akal, T. (2006). Improvement of time-reversal communications using adaptive channel equalizers. IEEE Journal of Oceanic Engineering, 31(2), 487-496. doi: 10.1109/joe.2006.876139
• Yardim, C., Gerstoft, P., & Hodgkiss, W. S. (2006). Estimation of radio refractivity from radar clutter using Bayesian Monte Carlo analysis. IEEE Transactions on Antennas and Propagation, 54(4), 1318-1327. doi: 10.1109/tap.2006.872673
• Huang, C. F., Gerstoft, P., & Hodgkiss, W. S. (2006). Uncertainty analysis in matched-field geoacoustic inversions. Journal of the Acoustical Society of America, 119(1), 197-207. doi: 10.1121/1.2139075
• Song, H. C., Roux, P., Hodgkiss, W. S., Kuperman, W. A., Akal, T., & Stevenson, M. (2006). Multiple-input-multiple-output coherent time reversal communications in a shallow-water acoustic channel. IEEE Journal of Oceanic Engineering, 31(1), 170-178. doi: 10.1109/joe.2005.850911

2005

• Edelmann, G. F., Song, H. C., Kim, S., Hodgkiss, W. S., Kuperman, W. A., & Akal, T. (2005). Underwater acoustic communications using time reversal. IEEE Journal of Oceanic Engineering, 30(4), 852-864. doi: 10.1109/joe.2005.862137
• Higley, W. J., Roux, P., Kuperman, W. A., Hodgkiss, W. S., Song, H. C., Akal, T., & Stevenson, M. (2005). Synthetic aperture time-reversal communications in shallow water: Experimental demonstration at sea. Journal of the Acoustical Society of America, 118(4), 2365-2372. doi: 10.1121/1.2011147
• Song, H. C., Hodgkiss, W. S., Kuperman, W. A., Roux, P., Akal, T., & Stevenson, M. (2005). Experimental demonstration of adaptive reverberation nulling using time reversal. Journal of the Acoustical Society of America, 118(3), 1381-1387. doi: 10.1121/1.1984990
• Sabra, K. G., Roux, P., Thode, A. M., D'Spain, G. L., Hodgkiss, W. S., & Kuperman, W. A. (2005). Using ocean ambient noise for array self-localization and self-synchronization. IEEE Journal of Oceanic Engineering, 30(2), 338-347. doi: 10.1109/joe.2005.850908

2004

• Gerstoft, P., Hodgkiss, W. S., Rogers, L. T., & Jablecki, M. (2004). Probability distribution of low-altitude propagation loss from radar sea clutter data. Radio Science, 39(6). doi: 10.1029/2004rs003077
• Huang, C. F., & Hodgkiss, W. S. (2004). Matched-field geoacoustic inversion of low-frequency source tow data from the ASIAEX East China Sea experiment. IEEE Journal of Oceanic Engineering, 29(4), 952-963. doi: 10.1109/joe.2004.836989
• Battle, D. J., Gerstoft, P., Hodgkiss, W. S., Kuperman, W. A., & Nielsen, P. L. (2004). Bayesian model selection applied to self-noise geoacoustic inversion. Journal of the Acoustical Society of America, 116(4), 2043-2056. doi: 10.1121/1.17855671
• Song, H. C., Kim, S., Hodgkiss, W. S., & Kuperman, W. A. (2004). Environmentally adaptive reverberation nulling using a time reversal mirror. Journal of the Acoustical Society of America, 116(2), 762-768. doi: 10.1121/1.1765194
• Roux, P., Kuperman, W. A., Hodgkiss, W. S., Song, H. C., Akal, T., & Stevenson, M. (2004). A nonreciprocal implementation of time reversal in the ocean. Journal of the Acoustical Society of America, 116(2), 1009-1015. doi: 10.1121/01.1707089
• Kim, S., Kuperman, W. A., Hodgkiss, W. S., Song, H. C., Edelmann, G., & Akal, T. (2004). Echo-to-reverberation enhancement using a time reversal mirror. Journal of the Acoustical Society of America, 115(4), 1525-1531. doi: 10.1121/1.1649737
• Hursky, P., Porter, M. B., Cornuelle, B. D., Hodgkiss, W. S., & Kuperman, W. A. (2004). Adjoint modeling for acoustic inversion. Journal of the Acoustical Society of America, 115(2), 607-619. doi: 10.1121/1.1636760

2003

• Akal, M., Kuperman, W. A., Hodgkiss, W. S., Song, H. C., Edelmann, G. F., Kim, S., ... Boni, P. A. (2003). Potential applications of ocean acoustic time-reversal mirrors - The focusing of acoustic energy in shallow water for active sonar and underwater communications. Sea Technology, 44(11), 25-+.
• Gerstoft, P., Hodgkiss, W. S., Kuperman, W. A., & Song, H. C. (2003). Phenomenological and global optimization inversion. IEEE Journal of Oceanic Engineering, 28(3), 342-354. doi: 10.1109/joe.2003.816681
• Battle, D. J., Gerstoft, P., Kuperman, W. A., Hodgkiss, W. S., & Siderius, M. (2003). Geoacoustic inversion of tow-ship noise via near-field-matched-field processing. IEEE Journal of Oceanic Engineering, 28(3), 454-467. doi: 10.1109/joe.2003.816679
• Kim, S., Kuperman, W. A., Hodgkiss, W. S., Song, H. C., Edelmann, G. F., & Akal, T. (2003). Robust time reversal focusing in the ocean. Journal of the Acoustical Society of America, 114(1), 145-157. doi: 10.1121/1.1582450
• Gerstoft, P., Rogers, L. T., Hodgkiss, W. S., & Wagner, L. J. (2003). Refractivity estimation using multiple elevation angles. IEEE Journal of Oceanic Engineering, 28(3), 513-525. doi: 10.1109/joe.2003.816680
• Gerstoft, P., Rogers, L. T., Krolik, J. L., & Hodgkiss, W. S. (2003). Inversion for refractivity parameters from radar sea clutter. Radio Science, 38(3). doi: 10.1029/2002rs002640
• Song, H., Kuperman, W. A., Hodgkiss, W. S., Akal, T., & Guerrini, P. (2003). Demonstration of a high-frequency acoustic barrier with a time-reversal mirror. IEEE Journal of Oceanic Engineering, 28(2), 246-249. doi: 10.1109/joe.2003.811900
• Song, H., Kuperman, W. A., Hodgkiss, W. S., Gerstoft, P., & Kim, J. S. (2003). Null broadening with snapshot-deficient covariance matrices in passive sonar. IEEE Journal of Oceanic Engineering, 28(2), 250-261. doi: 10.1109/joe.2003.814055
• Gerstoft, P., Hodgkiss, W. S., Kuperman, W. A., Song, H., Siderius, M., & Nielsen, P. L. (2003). Adaptive beamforming of a towed array during a turn. IEEE Journal of Oceanic Engineering, 28(1), 44-54. doi: 10.1109/joe.2002.808203

2002

• Edelmann, G. F., Akal, T., Hodgkiss, W. S., Kim, S., Kuperman, W. A., & Song, H. C. (2002). An initial demonstration of underwater acoustic communication using time reversal. IEEE Journal of Oceanic Engineering, 27(3), 602-609. doi: 10.1109/joe.2002.1040942
• Kim, J. S., Hodgkiss, W. S., Kuperman, W. A., & Song, H. C. (2002). Null-broadening in a waveguide. Journal of the Acoustical Society of America, 112(1), 189-197. doi: 10.1121/1.1488139

2001

• Kim, S., Edelmann, G. F., Kuperman, W. A., Hodgkiss, W. S., Song, H. C., & Akal, T. (2001). Spatial resolution of time-reversal arrays in shallow water. Journal of the Acoustical Society of America, 110(2), 820-829. doi: 10.1121/1.1382619
• Hursky, P., Hodgkiss, W. S., & Kuperman, W. A. (2001). Matched field processing with data-derived modes. Journal of the Acoustical Society of America, 109(4), 1355-1366. doi: 10.1121/1.1353592

2000

• Booth, N. O., Abawi, A. T., Schey, P. W., & Hodgkiss, W. S. (2000). Detectability of low-level broad-band signals using adaptive matched-field processing with vertical aperture arrays. IEEE Journal of Oceanic Engineering, 25(3), 296-313. doi: 10.1109/48.855260
• Gerstoft, P., Gingras, D. F., Rogers, L. T., & Hodgkiss, W. S. (2000). Estimation of radio refractivity structure using matched-field array processing. IEEE Transactions on Antennas and Propagation, 48(3), 345-356. doi: 10.1109/8.841895
• Baxley, P. A., Booth, N. O., & Hodgkiss, W. S. (2000). Matched-field replica model optimization and bottom property inversion in shallow water. Journal of the Acoustical Society of America, 107(3), 1301-1323. doi: 10.1121/1.428418
• Carbone, N. M., & Hodgkiss, W. S. (2000). Effects of tidally driven temperature fluctuations on shallow-water acoustic communications at 18 kHz. IEEE Journal of Oceanic Engineering, 25(1), 84-94. doi: 10.1109/48.820739
• Thode, A. M., Kuperman, W. A., D'Spain, G. L., & Hodgkiss, W. S. (2000). Localization using Bartlett matched-field processor sidelobes. Journal of the Acoustical Society of America, 107(1), 278-286. doi: 10.1121/1.428304

1999

• Unpingco, J., Kuperman, W. A., Hodgkiss, W. S., & Hecht-Nielsen, R. (1999). Single sensor source tracking and environmental inversion. Journal of the Acoustical Society of America, 106(3), 1316-1329. doi: 10.1121/1.427165
• Song, H. C., Kuperman, W. A., Hodgkiss, W. S., Akal, T., & Ferla, C. (1999). Iterative time reversal in the ocean. Journal of the Acoustical Society of America, 105(6), 3176-3184. doi: 10.1121/1.424648
• D'Spain, G. L., Murray, J. J., Hodgkiss, W. S., Booth, N. O., & Schey, P. W. (1999). Mirages in shallow water matched field processing. Journal of the Acoustical Society of America, 105(6), 3245-3265. doi: 10.1121/1.424653
• Hodgkiss, W. S., Song, H. C., Kuperman, W. A., Akal, T., Ferla, C., & Jackson, D. R. (1999). A long-range and variable focus phase-conjugation experiment in shallow water. Journal of the Acoustical Society of America, 105(3), 1597-1604. doi: 10.1121/1.426740

1998

• Song, H. C., Kuperman, W. A., & Hodgkiss, W. S. (1998). A time-reversal mirror with variable range focusing. Journal of the Acoustical Society of America, 103(6), 3234-3240. doi: 10.1121/1.423040
• Kuperman, W. A., Hodgkiss, W. S., Song, H. C., Akal, T., Ferla, C., & Jackson, D. R. (1998). Phase conjugation in the ocean: Experimental demonstration of an acoustic time-reversal mirror. Journal of the Acoustical Society of America, 103(1), 25-40. doi: 10.1121/1.423233

1996

• Hodgkiss, W. S., Ensberg, D. E., Murray, J. J., Dspain, G. L., Booth, N. O., & Schey, P. W. (1996). Direct measurement and matched-field inversion approaches to array shape estimation. IEEE Journal of Oceanic Engineering, 21(4), 393-401. doi: 10.1109/48.544050
• Booth, N. O., Baxley, P. A., Rice, J. A., Schey, P. W., Hodgkiss, W. S., Dspain, G. L., & Murray, J. J. (1996). Source localization with broad-band matched-field processing in shallow water. IEEE Journal of Oceanic Engineering, 21(4), 402-412. doi: 10.1109/48.544051
• Smith, K. B., Hodgkiss, W. S., & Tappert, F. D. (1996). Propagation and analysis issues in the prediction of long-range reverberation. Journal of the Acoustical Society of America, 99(3), 1387-1404. doi: 10.1121/1.414718

1994

• Richardson, A. M., & Hodgkiss, W. S. (1994). Bispectral analysis of underwater acoustic data. Journal of the Acoustical Society of America, 96(2), 828-837. doi: 10.1121/1.410321
• Worcester, P. F., Cornuelle, B. D., Hildebrand, J. A., Hodgkiss, W. S., Duda, T. F., Boyd, J., ... Spindel, R. C. (1994). A comparison of measured and predicted broadband acoustic arrival patterns in travel time–depth coordinates at 1000‐km range. Journal of the Acoustical Society of America, 95(6), 3118-3128. doi: 10.1121/1.409977

1993

• Tran, J. Q. D., & Hodgkiss, W. S. (1993). Array surveying using matched‐field processing. Journal of the Acoustical Society of America, 94(5), 2851-2858. doi: 10.1121/1.407342
• Brienzo, R. K., & Hodgkiss, W. S. (1993). Broadband matched‐field processing. Journal of the Acoustical Society of America, 94(5), 2821-2831. doi: 10.1121/1.407339
• Cornuelle, B. D., Worcester, P. F., Hildebrand, J. A., Hodgkiss, W. S., Duda, T. F., Boyd, J., ... Spindel, R. C. (1993). Ocean acoustic tomography at 1000-km range using wavefronts measured with a large-aperture vertical array. Journal of Geophysical Research-Oceans, 98(C9), 16365-16377. doi: 10.1029/93jc01246
• Chen, G. C., & Hodgkiss, W. S. (1993). VLF source localization with a freely drifting acoustic sensor array. Ieee Journal of Oceanic Engineering, 18(3), 209-223. doi: 10.1109/joe.1993.236359
• Tran, J. Q. D., & Hodgkiss, W. S. (1993). Sound‐speed profile inversion using a large aperture vertical line array. Journal of the Acoustical Society of America, 93(2), 803-812. doi: 10.1121/1.405442
• Tran, J. Q. D., & Hodgkiss, W. S. (1993). Spatial smoothing and minimum variance beamforming on data from large aperture vertical line arrays. IEEE Journal of Oceanic Engineering, 18(1), 15-24. doi: 10.1109/48.211500

1992

• Duda, T. F., Flatte, S. M., Colosi, J. A., Cornuelle, B. D., Hildebrand, J. A., Hodgkiss, W. S., ... Spindel, R. C. (1992). Measured wave‐front fluctuations in 1000‐km pulse propagation in the Pacific Ocean. Journal of the Acoustical Society of America, 92(2), 939-955. doi: 10.1121/1.403964

1991

• Tran, J. Q. D., & Hodgkiss, W. S. (1991). Experimental observation of temporal fluctuations at the output of the conventional matched-field processor. Journal of the Acoustical Society of America, 89(5), 2291-2302. doi: 10.1121/1.400920
• Dspain, G. L., Hodgkiss, W. S., & Edmonds, G. L. (1991). The simultaneous measurement of infrasonic acoustic particle velocity and acoustic pressure in the ocean by freely drifting Swallow floats. IEEE Journal of Oceanic Engineering, 16(2), 195-207. doi: 10.1109/48.84136
• D'Spain, G. L., Hodgkiss, W. S., & Edmonds, G. L. (1991). Energetics of the Deep Oceans Infrasonic Sound Field. Journal of the Acoustical Society of America, 89(3), 1134-1158. doi: 10.1121/1.400677
• Tran, J. Q. D., & Hodgkiss, W. S. (1991). Matched‐field processing of 200‐Hz continuous wave (cw) signals. Journal of the Acoustical Society of America, 89(2), 745-755. doi: 10.1121/1.1894634

1990

• Sotirin, B. J., Tran, J. Q. D., & Hodgkiss, W. S. (1990). Matched field processing of deep-water ambient noise. IEEE Journal of Oceanic Engineering, 15(4), 316-323. doi: 10.1109/48.103527
• Hodgkiss, W. S., & Fisher, F. H. (1990). Vertical directionality of ambient noise at 32°N as a function of longitude and wind speed. IEEE Journal of Oceanic Engineering, 15(4), 335-339. doi: 10.1109/48.103529
• Sotirin, B. J., & Hodgkiss, W. S. (1990). Fine‐scale measurements of the vertical ambient noise field. Journal of the Acoustical Society of America, 87(5), 2052-2063. doi: 10.1121/1.399332

1988

• Culver, R. L., & Hodgkiss, W. S. (1988). Comparison of Kalman and least squares filters for locating autonomous very low frequency acoustic sensors. IEEE Journal of Oceanic Engineering, 13(4), 282-290. doi: 10.1109/48.9241
• DeFatta, D. J., Lucas, J. G., & Hodgkiss, W. S. (1988). Digital signal processing : Solutions manual. New York: Wiley.
• DeFatta, D. J., Lucas, J. G., & Hodgkiss, W. S. (1988). Digital signal processing : a system design approach. New York: Wiley.

1986

• Hodgkiss, W. S., & Alexandrou, D. (1986). An adaptive algorithm for array processing. IEEE Transactions on Antennas and Propagation, 34(3), 454-458. doi: 10.1109/tap.1986.1143835

1985

• Hodgkiss, W. S., & Alexandrou, D. (1985). Under-ice reverberation rejection. IEEE Journal of Oceanic Engineering, 10(3), 285-289. doi: 10.1109/joe.1985.1145107

1984

• Hodgkiss, W. S. (1984). An oceanic reverberation model. IEEE Journal of Oceanic Engineering, 9(2), 63-72. doi: 10.1109/joe.1984.1145599
• Hodgkiss, W. S. (1984). Surface projections of array beam patterns. IEEE Journal of Oceanic Engineering, 9(2), 98-98. doi: 10.1109/joe.1984.1145606
• Hodgkiss, W. S., & Alexandrou, D. (1984). Power normalization sensitivity of adaptive lattice structures. IEEE Transactions on Acoustics Speech and Signal Processing, 32(4), 925-928. doi: 10.1109/tassp.1984.1164383

1983

• Hodgkiss, W. S., & Anderson, V. C. (1983). Acoustic positioning for an array of freely drifting infrasonic sensors. IEEE Journal of Oceanic Engineering, 8(3), 116-119. doi: 10.1109/joe.1983.1145567
• Hodgkiss, W. S. (1983). The effects of array shape perturbation on beamforming and passive ranging. IEEE Journal of Oceanic Engineering, 8(3), 120-130. doi: 10.1109/joe.1983.1145558

1982

• Hodgkiss, W. S., & Presley, J. A. (1982). The complex adaptive least-squares lattice. IEEE Transactions on Acoustics Speech and Signal Processing, 30(2), 330-333. doi: 10.1109/tassp.1982.1163869
• Marchisio, G. B., & Hodgkiss, W. S. (1982). Deconvolution applied to a near‐bottom seismic profiler. Journal of the Acoustical Society of America, 72(5), 1478-1491. doi: 10.1121/1.388682

1981

• Hodgkiss, W. S., & Anderson, V. C. (1981). Hardware dynamic beamforming. Journal of the Acoustical Society of America, 69(4), 1075-1083. doi: 10.1121/1.385686
• Hodgkiss, W. S., & Presley, J. A. (1981). Adaptive tracking of multiple sinusoids whose power levels are widely separated. IEEE Transactions on Acoustics Speech and Signal Processing, 29(3), 710-721. doi: 10.1109/tassp.1981.1163601

1980

• Hodgkiss, W. S., & Anderson, V. C. (1980). Detection of sinusoids in ocean acoustic background noise. Journal of the Acoustical Society of America, 67(1), 214-219. doi: 10.1121/1.383730
• Hodgkiss, W. S., & Nolte, L. W. (1980). A sequential implementation of optimal array processors. IEEE Transactions on Aerospace and Electronic Systems, 16(3), 349-354. doi: 10.1109/taes.1980.308904

1979

• Hodgkiss, W. S. (1979). Performance of likelihood ratio processors. IEEE Transactions on Aerospace and Electronic Systems, 15(4), 571-573.

1978

• Hodgkiss, W. S., & Nolte, L. W. (1978). Array processor performance under directional uncertainty. IEEE Transactions on Aerospace and Electronic Systems, 14(5), 826-832. doi: 10.1109/taes.1978.308638
• Hodgkiss, W. S. (1978). Detection of LPM signals with estimation of their velocity and time of arrival. Journal of the Acoustical Society of America, 64(1), 177-180. doi: 10.1121/1.381982

1977

• Hodgkiss, W. S., & Nolte, L. W. (1977). Adaptive optimum array processing. Journal of the Acoustical Society of America, 61(3), 763-775. doi: 10.1121/1.381365

1976

• Hodgkiss, W. S., & Nolte, L. W. (1976). Covariance between Fourier coefficients representing the time waveforms observed from an array of sensors. Journal of the Acoustical Society of America, 59(3), 582-590. doi: 10.1121/1.380902
• Hodgkiss, W. S., & Nolte, L. W. (1976). Optimal array processor performance trade-offs under directional uncertainty. IEEE Transactions on Aerospace and Electronic Systems, 12(5), 605-615. doi: 10.1109/taes.1976.308263

1975

• Hodgkiss, W. S., & Nolte, L. W. (1975). Note on calculation of performance for likelihood ratio processors via computer simulation. IEEE Transactions on Information Theory, 21(6), 695-698. doi: 10.1109/tit.1975.1055456
• Hodgkiss, W. S., & Nolte, L. W. (1975). Bayes optimum and maximum-likelihood approaches in an array processing problem. IEEE Transactions on Aerospace and Electronic Systems, 11(5), 913-916. doi: 10.1109/taes.1975.308004