Edge-diffraction effects in RCS predictions and their importance in systems analysis

W. F. Friess; D. Klement; M. Ruppel; Volker Stein

doi:10.1117/12.243017

17 June 1996 Edge-diffraction effects in RCS predictions and their importance in systems analysis

W. F. Friess, D. Klement, M. Ruppel, Volker Stein

Proceedings Volume 2742, Targets and Backgrounds: Characterization and Representation II; (1996) https://doi.org/10.1117/12.243017
Event: Aerospace/Defense Sensing and Controls, 1996, Orlando, FL, United States

Abstract

In developing RCS prediction codes a variety of physical effects such as the edge diffraction effect have to be considered with the consequence that the computer effort increases considerably. This fact limits the field of application of such codes, especially if the RCS data serve as input parameters for system simulators which very often need these data for a high number of observation angles and/or frequencies. Vice versa the issues of a system analysis can be used to estimate the relevance of physical effects under system viewpoints and to rank them according to their magnitude. This paper tries to evaluate the importance of RCS predictions containing an edge diffracted field for systems analysis. A double dihedral with a strong depolarizing behavior and a generic airplane design containing many arbitrarily oriented edges are used as test structures. Data of the scattered field are generated by the RCS computer code SIGMA with and without including edge diffraction effects. These data are submitted to the code DORA to determine radar range and radar detectibility and to a SAR simulator code to generate SAR imagery. In both cases special scenarios are assumed. The essential features of the computer codes in their current state are described, the results are presented and discussed under systems viewpoints.

Citation Download Citation

W. F. Friess, D. Klement, M. Ruppel, and Volker Stein "Edge-diffraction effects in RCS predictions and their importance in systems analysis", Proc. SPIE 2742, Targets and Backgrounds: Characterization and Representation II, (17 June 1996); https://doi.org/10.1117/12.243017

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