Accession Number:

ADA610697

Title:

A Computer Model for Bistatic Sea Surface Microwave Reflectivity

Descriptive Note:

Memorandum rept. Oct 2009-Oct 2010

Corporate Author:

NAVAL RESEARCH LAB WASHINGTON DC RADAR ANALYSIS BRANCH

Report Date:

2014-08-14

Pagination or Media Count:

41.0

Abstract:

This report describes an approach for calculating the bistatic microwave reflectivity of the sea surface for transmit and receive grazing angles less than 10 degrees and any relative geometry through 360 degrees. In the forward scatter region, including specular and glistening zone, the model relies on the work of Beckman and Spizzichino supplemented with later work on shadowing 2 and polarization effects 3. Outside the forward scatter region, the model is heuristic and based on the similarities between measured monostatic and bistatic sea reflectivity. The motivation behind the model described is the evaluation of the magnitude of jamming reflections into the radar main beam and sidelobes from the sea surface. Such jamming reflections, which sometimes are referred to as hot clutter, can degrade the performance of adaptive jamming cancellation systems. The model also applies to evaluation of the performance of bistatic radar systems. The complete model is incorporated in a single MATLAB function call, used as a basis for a graphic user interface GUI, which provides a useful tool to analyze a wide range of scenarios. This code is described in two appendixes and will be provided to qualified organizations upon request.

Subject Categories:

  • Earth Sciences and Oceanography
  • Statistics and Probability
  • Computer Programming and Software
  • Target Direction, Range and Position Finding
  • Optics
  • Radiofrequency Wave Propagation

Distribution Statement:

APPROVED FOR PUBLIC RELEASE