A Radar Sea Clutter Model for Atmospheric Ducting Conditions

Snyder, F. P.

doi:10.21236/ada145321

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1987

1990

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Cited by 3 publications

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“…Finally, the sea clutter algorithms in IREPS are more consistent with ducts based at the surface formed by elevated refractive layers I [i.e., a duct in which the elevated minimum in the M profile is smaller than the surface value] (Snyder, 1979).…”

Section: )mentioning

confidence: 78%

The Surface Evaporative Duct Height Product: An Evaluation

Thompson¹

1987

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Section: )mentioning

confidence: 78%

The Surface Evaporative Duct Height Product: An Evaluation

Thompson¹

1987

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“…Other effects, such as atmospheric ducting, should also be of interest. Snyder (1984), for example, presented a sea clutter model which is a union of classical one-dimensional ray-optics propagation with a semi-empirical normalized sea clutter cross section model not originally intended for application for ducting. Thus, in these cases, the air-sea interaction dynamics may need to be included in an even higher level sea clutter model.…”

Section: 6 Potential Pavoff Of Researchmentioning

confidence: 99%

The Effects of Better Environmental Inputs in Estimating Sea Clutter

Cheung¹

1988

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FIELD 04 GROUP 01 SUB-GROUP SUBJECT TERMS {Continue on reverse if necessary and identify by block number)Sea clutter Ocean wave model Microwave scattering ABSTRACT {Continue on reverse if necessary and identify by block number)Microwave radars deployed near the marine environment, e.g., shipboard and airborne radars, are subjected to sea return or sea clutter. In many instances, sea return for radars at large angles of incidence or small grazing angles (less than 15°) is of special importance.This study examines the effects of better environmental inputs to an existing sea clutter model that has proven to be adequate for small grazing angles. Limitations in the existing model are described, improvements are suggested, and plans for improving the model are outlined and discussed.

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Evaporation duct effects on sea clutter

Paulus

1990

IEEE Trans. Antennas Propagat.

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Abstract-Existing sea clutter models are in general agreement on the trends and magnitudes of sea reflectivity at low (1" -10") grazing angles. However, at extremely low grazing angles (< lo), models, theory, and measurements show considerable differences. The effects of the oceanic evaporation duct on grazing angle are investigated. Significant changes in grazing angle due to the evaporation duct are found and the illumination of the sea surface by the radar is shown to extend well beyond the standard (4 / 3 earth) radar horizon range. A series of sea clutter model comparisons shows that much of the difference between models can be attributed to evaporation duct effects.

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A Radar Sea Clutter Model for Atmospheric Ducting Conditions

Cited by 3 publications

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The Surface Evaporative Duct Height Product: An Evaluation

The Surface Evaporative Duct Height Product: An Evaluation

The Effects of Better Environmental Inputs in Estimating Sea Clutter

Evaporation duct effects on sea clutter

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