Accession Number : AD0769666

Title :   An Empirical Sea Clutter Model.

Descriptive Note : Interim rept.,


Personal Author(s) : Daley,John

Report Date : OCT 1973

Pagination or Media Count : 37

Abstract : The extensive sea return data bank acquired with the NRL four-frequency radar system has been used to develop an empirical model for the median value of the normalized radar cross section (sigma sub/) of the sea. This model encompasses a wide range of radar and surface parameters in the microwave region for depression angles from near grazing to vertical incidence. Wind velocity is used as the basic descriptor of the ocean surface, and a power law dependence to (sigma sub/) is found to be applicable to most sea conditions. Comparisons of the model with theory show agreement with both the composite surface theory at moderate depression angles and with the specular point theory at vertical incidence. (Author)

Descriptors :   (*Ocean surface, Surface roughness), (*Radar reflections, Ocean surface), Wind velocity, Radar cross sections, Graphics, Probability density functions, Tables(Data)

Subject Categories : Physical and Dynamic Oceanography
      Active & Passive Radar Detection & Equipment

Distribution Statement : APPROVED FOR PUBLIC RELEASE