Search Results - "YISAN LAI"

Long range acoustic imaging of the continental shelf environment : The Acoustic Clutter Reconnaissance Experiment 2001 by RATILAL, Purnima, YISAN LAI, SYMONDS, Deanelle T, RUHLMANN, Lilimar A, PRESTON, John R, SCHEER, Edward K, GARR, Michael T, HOLLAND, Charles W, GOFF, John A, MAKRIS, Nicholas C

“…An active sonar system is used to image wide areas of the continental shelf environment by long-range echo sounding at low frequency. The bistatic system,…”
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A spectral formulation for the Doppler-shifted field scattered by an object moving in a stratified medium by Lai, Yisan, Makris, Nicholas C.

“…A spectral formulation for the 3-D field scattered by an object moving in a stratified medium is derived using full-field wave theory. The derivation is based…”
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Multiple Doppler shifts in the field scattered from an object moving in a horizontally stratified waveguide by Lai, Yisan, Makris, Nicholas C.

“…A method is developed to solve the problem of bistatic scattering from a horizontally moving object in a horizontally stratified waveguide. The target motion…”
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Validity of the sonar equation and Babinet's principle for scattering in a stratified medium by Ratilal, Purnima, Lai, Yisan, Makris, Nicholas C

“…The sonar equation rests on the assumption that received sound pressure level after scattering can be written in decibels as a sum of four terms: source level,…”
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The Geoclutter experiment: Remotely imaging sub-bottom geomorphology in shallow water by Makris, Nicholas C., Ratilal, Purnima, Lai, Yisan, Scheer, Edward

“…Preliminary results of the Geoclutter experiment of April–May 2001 are presented. This bistatic reverberation experiment was conducted at the New Jersey…”
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Validity of the sonar equation and Babinet’s principle for object scattering in a shallow water waveguide by Makris, Nicholas C., Ratilal, Purnima, Lai, Yisan

“…It has recently been shown that the sonar equation can provide a reasonable approximation to nonforward scattering from a noncompact (ka>1) sphere submerged in…”
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Range-dependent 3D scattering and reverberation in the continental shelf environment from biology, geology and oceanography by Ratilal, Purnima, Lee, Sunwoong, Lai, Yisan, Chen, Tianrun, Symonds, Deanelle, Donabed, Ninos, Makris, Nicholas

“…Several unified scattering and reverberation models were developed in support of the ONR Acoustic Clutter Program. They include a range-dependent model based…”
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Expected Doppler shift and spread in long range scattering from fish schools on the continental shelf by Makris, Nicholas C., Lai, Yisan, Bertsatos, Ioannis, Symonds, Deanelle, Lee, Sunwoong, Ratilal, Purnima

“…A stochastic model for the velocities of individual fish in a school, consistent with continous wide area observations [Symonds et al., J. Acoust. Soc. Am…”
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The Geoclutter Experiment 2001: Remote acoustic imaging of sub-bottom and seafloor geomorphology in continental shelf waters by Makris, Nicholas C., Ratilal, Purnima, Lai, Yisan, Symonds, Deanelle T., Ruhlmann, Lilimar A., Scheer, Edward K.

“…In the Geoclutter experiment of April–May 2001, an active sonar system was used to remotely and rapidly image geomorphology over wide areas in continental…”
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Analysis of acoustic intensity fluctuations measured after one-way transmission and bistatic target scattering on the New Jersey continental shelf during MAE 2003 by Chen, Tianrun, Lee, Sunwoong, Lai, Yisan, Ratilal, Purnima, Makris, Nicholas C.

“…Acoustic intensity was observed to fluctuate in time and space after both one-way transmission and bistatic scattering from moored targets in the New Jersey…”
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Long-range acoustic imaging of the Continental Shelf Environment reveals massive fish schools: 2003 Main Acoustic Clutter Experiment by Makris, Nicholas C., Ratilal, Purnima, Lai, Yisan, Lee, Sunwoong, Symonds, Deanelle T., Ruhlmann, Lilimar A., Nero, Redwood W., Preston, John R., Scheer, Edward K., Sundvik, Michael T.

“…Results from the three-ship, April–May 2003 Main Acoustics Experiment of the ONR Acoustics Clutter Program are presented. A long-range bistatic sonar system…”
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