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

Zeyang Zhou,Jun Huang

doi:10.3390/photonics7030064

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.

Highlights

Since entering the new century, physical optics (PO) and diffraction theory have important and extensive applications in solving the radar cross-section of military targets [1,2]
As the gun barrel gradually the bow, the front sideduring of the turret is tilted at a large angle to make it easier to deflect the radar waves in the range of the head to a non-threatening direction. These results show that the turret rotation does have a dynamic effect on the electromagnetic scattering characteristics of the turret under different azimuth angles
Rough stealth designs are used for both the turret and the warship, there are far stronger scattering sources on the hull surface than on the turret. These results suggest that impact of turret rotation on warship

Summary

Introduction

Since entering the new century, physical optics (PO) and diffraction theory have important and extensive applications in solving the radar cross-section of military targets [1,2]. The design of modern warships tends to be simple in appearance to facilitate stealth, but the electromagnetic scattering characteristics of ships will undergo complex changes if the variety of sport conditions, including the turret movement, attitude changes and the influence of the sea surface, are taken into account [2,3]. The radar cross-section of warships under complex motion conditions has gradually gained significant interest among researchers. For the solution of the target radar cross-section, scholars from various countries have conducted a lot of research work, focusing on the evaluation of the radar stealth characteristics of the target and design the target stealth. To evaluate the fringe diffraction field, physical theory of diffraction (PTD) is developed to overcome these residual or fringe current solutions [6,7]

Methods

Results

Conclusion