Search Results - "Sletten, M.A"

Statistical Properties of Low-Grazing Range-Resolved Sea Surface Backscatter Generated Through Two-Dimensional Direct Numerical Simulations by Toporkov, J.V., Sletten, M.A.

“…Statistical properties of the X-band sea clutter are studied using 2-D direct numerical simulations. Surfaces are modeled as realizations of a Gaussian random…”
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Sea surface velocity vector retrieval using dual-beam interferometry: first demonstration by Toporkov, J.V., Perkovic, D., Farquharson, G., Sletten, M.A., Frasier, S.J.

“…The dual-beam interferometer consists of two interferometric synthetic aperture radars (InSARs), one squinted at 20/spl deg/ forward of broadside, and the…”
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An analysis of gradient-induced distortion in ATI-SAR imagery of surface currents by Sletten, M.A.

“…This paper summarizes an analysis of gradient-induced distortions in the surface current estimates generated by along-track interferometric SAR (ATI-SAR)…”
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Ocean Mixed-Layer Depth and Current Variation Estimated From Imagery of Surfactant Streaks by Marmorino, G.O., Toporkov, J.V., Smith, G.B., Sletten, M.A., Perkovic, D., Frasier, S., Judd, K.P.

“…The ability of high-resolution imaging systems to resolve small-scale structure on the ocean surface suggests the possibility of using characteristics of…”
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A pod-based dual-beam SAR by Farquharson, G., Junek, W.N., Ramanathan, A., Frasier, S.J., Tessier, R., McLaughlin, D.J., Sletten, M.A., Toporkov, J.V.

“…A dual-beam along-track interferometric synthetic aperture radar that is entirely self-contained within an aircraft pod has been developed by the University of…”
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Ultrawideband radar images of the surface disturbance produced by a submerged, mine-like object by Sletten, M.A.

“…This paper describes an ultrawideband, imaging radar designed to image the fine structure of the surface disturbances caused by submerged objects and presents…”
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Radar scattering behavior of estuarine outflow plumes by Xuehu Zhang, Twarog, E.M., McLaughlin, D.J., Sletten, M.A., Marmorino, G.O., Trump, C.L., Allan, N.

“…We present results of dual-polarized radar scattering measurements of the Chesapeake Bay outflow plume. Near-unity polarization ratios (ratios of horizontally…”
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Lessons learned from full-spectral modeling of signatures of an estuary front by Chubb, S.R., Cooper, A.L., West, J.C., Nedlin, G.M., Sletten, M.A.

“…Previously, we have modeled radar signatures, involving large variations (/spl sim/10-15 dB) in radar cross section (RCS), that have been observed at strongly…”
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Estimating ocean frontal surface velocity distributions from radar imagery signatures by Cooper, A.L., Chubb, S.R., Sletten, M.A., Trump, C.L.

“…An inversion algorithm for inferring the surface velocity field of buoyant plume frontal features from observed radar imagery has been developed. The inversion…”
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Multipath scattering in ultrawide-band radar sea spikes by Sletten, M.A.

“…This paper presents sea scatter data collected with an ultrawide-band (UWB) polarimetric radar system that indicates that multipath scattering plays an…”
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Combining modern spectral estimation with Time-Frequency representation by Kersten, P.R., Jansen, R.W., Ainsworth, T.L., Toporkov, J.V., Sletten, M.A.

“…With Joint Time-Frequency Analysis (JTFA), one can estimate the speed of moving targets from Synthetic Aperture Radar (SAR) images. These targets are usually…”
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Observations of an inshore front associated with the Chesapeake Bay outflow plume by Marmorino, G.O, Donato, T.F, Sletten, M.A, Trump, C.L

“…Preliminary observations are reported of a recurring front located near Cape Henry, Virginia, USA. The front occurs on the right-hand side, looking seaward, of…”
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An airborne pod-mounted dual beam interferometer by Perkovic, D., Frasier, S.J., Tessier, R., Sletten, M.A., Toporkov, J.V.

“…Dual beam interferometer (DBI) has been developed by the University of Massachusetts (UMass) to study ocean surface waves and currents in coastal regions. This…”
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Resolution of a phase ambiguity in a calibration procedure for polarimetric radar systems by Sletten, M.A.

“…A cross-pol/co-pol phase ambiguity in a previously published calibration procedure for polarimetric radar systems is discussed. The original procedure is…”
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An ultrawideband, polarimetric radar for the study of sea scatter by Sletten, M.A., Trizna, D.B.

“…An ultrawideband radar system is described which has the capability of making pulse-to-pulse polarimetric measurements of the dynamic water features…”
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Numerical study of wide-band low-grazing HF clutter from ocean-like surfaces by Toporkov, J.V., Sletten, M.A.

“…Backscattering of a vertically polarized, ultra-wide band HF pulse (3-30 MHz) from one-dimensional Pierson-Moskowitz impedance surfaces is studied using method…”
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An Empirical Study of Breaking Wave Contribution to Radar Backscatter from the Ocean Surface at Low Grazing Angle by Hwang, P.A., Sletten, M.A., Toporkov, J.V.

“…The anomaly of radar sea spikes, defined here as the non-Bragg scattering events with backscattering cross section of horizontal polarization exceeding that of…”
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A conceptual design for simultaneous measurements of 3D surface wave field and ocean surface current vector using the InSAR technology by Hwang, P.A., Toporkov, J.V., Sletten, M.A.

“…The radial velocity measured by a conventional along-track interferometric synthetic aperture radar (ATI) is contributed by all three orthogonal velocity…”
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An analysis of gradient-induced distortion in dual beam ati systems for vector surface current mapping by Sletten, M.A.

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Statistical characterization of radar sea scatter for breaking wave detection by Hwang, P.A., Sletten, M.A., Toporkov, J.V.

“…Radar backscatter data are collected using a coherent, dual-polarized radar from a fixed tower in the ocean. Statistical analysis is performed to investigate…”
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