Abstract
Radar Cross Section (RCS) is one of the most considerable parameters for ship stealth design. As modern ships are larger than their predecessors, RCS must be managed at each design stage for its reduction. For predicting RCS of ship, Radar Cross Section Analysis Program (RACSAN) based on Kirchhoff approximation in high frequency range has been developed. This program can present RCS including multi-bounce effect in exterior and interior structure by combination of geometric optics (GO) and physical optics (PO) methods, coating effect by using Fresnel reflection coefficient, and response time pattern for detected target. In this paper, RCS calculations of ship model with above effects are simulated by using this developed program and RCS results are discussed.
Highlights
The Radar Cross Section (RCS) is concerned with active detection and is an important parameter in stealth design
Because modern ships are larger than their predecessors, RCS must be controlled at each design stage for its reduction
N where σ total is the root of the total RCS, n is the number of the segment and σ n is the root of the RCS of each segment
Summary
The Radar Cross Section (RCS) is concerned with active detection and is an important parameter in stealth design. The boundary element method (BEM) [2] and finite element method (FEM) [3] were used at low frequency. These methods give accurate results but require a long computer running time. Most numerical calculations of RCS for a target such as a ship at high fre-. (2015) Radar Cross Section Analysis Using Physical Optics and Its Applications to Marine Targets. For prediction for RCS of a ship in high frequency range, Radar Cross Section Analysis Program (RACSAN) based on Kirchhoff approximation in PO has been developed. RCS for a ship model is numerically simulated by using this program. Various effects, which are multi-bounce effect in exterior and interior structure by combination of GO and PO methods, coating effect by using Fresnel reflection coefficient, and response time pattern for detected target are considered
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