Results 341 to 350 of about 1,370,388 (368)

Bistatic sea clutter: simulations and measurements

IGARSS '96. 1996 International Geoscience and Remote Sensing Symposium, 2002
The problem of electromagnetic scattering from a randomly rough surface is analyzed using the Kirchhoff approximation (stationary phase, scalar approximation), the small perturbation model and the two-scale model. The authors show that physical and geometrical optics approximations can be used for a rough sea surface. A small perturbation model gives a
A. Khenchaf, F. Daout, Y. Hurtaud, J. Saillard   +3 more
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Chaos, sea clutter, and neural networks

Conference Record of the Thirty-First Asilomar Conference on Signals, Systems and Computers (Cat. No.97CB36136), 2002
The notion that a deterministic nonlinear dynamical system (with relatively few degrees of freedom) can display aperiodic behavior has a strong bearing on sea clutter characterization: random-looking sea clutter may be the outcome of a chaotic process. This new approach envisages deterministic rules for the underlying sea clutter dynamics, in contrast ...
S. Haykin, S. Puthusserypady
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Sea clutter and radar complex targets

2013 International Conference on Radar, 2013
The study, analysis and mastery of sea clutter has become indispensable in many different applications (oceanography, communications, telecommunications, maritime surveillance, detection, monitoring and classification of targets, target recognition,...), so it is one of the major themes addressed by the scientists working in different areas of the ...
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Small-target detection in sea clutter

IEEE Transactions on Geoscience and Remote Sensing, 2004
Sea clutter in marine surveillance radar makes the task of detecting small targets a very challenging problem. In this paper, a set of three signal processing techniques designed to suppress unwanted sea clutter radar echo and achieve target detection with no prior knowledge of the ocean and environmental conditions is presented.
Panagopolous, S., Soraghan, J.J.
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Empirical models for sea clutter

2013
The observed characteristics of radar sea clutter were described in the previous chapter. This chapter presents some of the empirical models that describe sea clutter characteristics and that can be applied for signal processing design and radar performance predictions.
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Doppler modelling of radar sea clutter

IEE Proceedings - Radar, Sonar and Navigation, 2001
Data from a cliff top radar experiment conducted off the south coast of England are examined in order to investigate the applicability of a three-component model for radar Doppler spectra, developed using laboratory wavetank data, to coastal water sea clutter. This is achieved by a detailed analysis of the prominent features in the cliff top radar data
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Some Practical Experience of Sea Clutter

Journal of Navigation, 1954
It is widely known that whilst radar is almost unaffected by the densest fogs, some reduction of its performance must be expected in rain, and sometimes considerable reductions under conditions of very rough sea. Little practical data have been available to the mariner on the extent of reduction which may be expected in rough sea conditions and this ...
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Statistical models of sea clutter

2006
In this chapter the authors develop the models of sea clutter that will provide a basis for our subsequent discussion and calculation of radar performance. As the authors saw in the previous chapter, a direct approach to the modelling of sea clutter provides many useful insights.
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The characteristics of radar sea clutter

2006
In this chapter, sea clutter is described in terms of its observed characteristics. These observations will provide the foundations upon which the themes of subsequent chapters are developed. Radars operating in a maritime environment inevitably encounter backscattered radar signals from the sea surface, usually referred to as sea clutter.
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RCS Matrix Studies of Sea Clutter

1981
Abstract : The report describes the development of a mobile experimental facility for making observations of RCS matrix properties of sea clutter and of targets in sea clutter. The equipment is mounted in a van which was towed to a site on Pt. Loma at the NOSC facility in San Diego.
Steven Weisbrod, Lee A. Morgan
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