Abstract
In this paper, we analyze the radar cross section (RCS) of an integrated mast and present the optimized mast shape for RCS reduction. The RCS is simulated using commercial electromagnetic (EM) software based on the shooting and bouncing rays (SBR) method and the diffraction fields at the edges are also considered. Threat frequencies, threat regions and cardinal points are first defined considering the operational environments of a naval vessel. We calculate and analyze the RCS of the integrated mast in terms of the threat frequencies, the shapes of the integrated mast and the direction and polarization of the incident waves. The shape of the integrated mast is optimized based on the shaping technique. The optimized mast has low RCS properties in the primary threat sectors except for the exceptional angle regions.
Highlights
The rapid development of radar technology has made it possible to detect the presence of enemy vessels early but it has become difficult to operate or hide without notifying the enemy of the presence of friendly naval ships
We analyzed the radar cross section is (RCS) of the integrated mast using the asymptotic of 14 solver of CST Microwave Studio based on the shooting and bouncing rays (SBR) method, which included the7diffraction fields at the edges [26]
We checked the stealth performance of the optimized integrated mast shape though the computation of the RCS of a naval ship equipped with the integrated mast
Summary
The rapid development of radar technology has made it possible to detect the presence of enemy vessels early but it has become difficult to operate or hide without notifying the enemy of the presence of friendly naval ships. The RCS of naval ships covered with RAM was numerically analyzed to evaluate its stealth performance [12,13,14,15,16] and the RCS of an integrated mast coated with multi-layered RAM was analyzed [17]. They usually have a narrow absorption bandwidth and are too bulky and fragile in operational environments, which incurs astronomical costs for its ongoing maintenance. The integrated mast is designed to have low RCS properties in the primary threat sectors except for the exceptional angle regions and the improvement of the RCS of the naval ship equipped with the optimized mast is confirmed
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