Dynamic Scattering Approach for Solving the Radar Cross-Section of the Warship under Complex Motion Conditions

Abstract

To obtain the electromagnetic scattering characteristics of the warship under complex motion conditions, a dynamic scattering approach (DSA) based on physical optics and physical theory of diffraction is presented. The observation angles, turret rotation, hull attitude changes and sea wave models are carefully studied and discussed. The research results show that the pitching and rolling angles have a large effect on the radar cross-section (RCS) of the warship. Turret movement has a greater impact on its own RCS but less impact on the warship. The RCS of the warship varies greatly at various azimuths and elevations. Different sea surface models have a greater impact on the lateral RCS of the warship. The DSA is effective and efficient to study the dynamic RCS of the warship under complex motion conditions.

Keen Investigation of the Electromagnetic Scattering Characteristics of Tiltrotor Aircraft Based on Dynamic Calculation Method

“…It is worth noting that the tilt rotor aircraft can adjust the rotor shaft from the horizontal position to the vertical position while keeping the posture of the fuselage unchanged [14]. Being much larger than the existence of a bird or flying insect, the tiltrotor has a much larger adjustment angle of the rotor disc than a conventional/coaxial helicopter, which will cause its RCS to have a large magnitude and fluctuation at more azimuths [15][16][17]. The multi-rotor dynamic scattering method is presented to evaluate the RCS of the compound helicopter, which guides the calculation of the radar characteristics of the tilt-rotor aircraft [18][19][20].…”