Physical Optics Radar Cross Section predictions for an anti-ship cruise missile

2021 ◽  
pp. 154851292110330
Author(s):  
Panagiotis Touzopoulos ◽  
Konstantinos C Zikidis
Keyword(s):  
Cross Section ◽  
Three Dimensional ◽  
Radar Cross Section ◽  
Physical Optics ◽  
Cruise Missile ◽  
Weapon System ◽  
Three Dimensional Model ◽  
Detection Range ◽  
Test Range ◽  
Radar Signature

The capability of the first strike is crucial in the modern battlefield. An important parameter is the radar signature or Radar Cross Section (RCS) of a weapon system, such as a fighter aircraft, a warship, or a missile, affecting the range at which this weapon system would be detected as a target by an enemy radar. If the attacker is detected too late, there will be minimal time for the defender to react, possibly not sufficient to counter the threat. The RCS of a weapon system is considered generally as classified information. However, it can be measured at a suitable measurement test range, if that weapon system is available. Otherwise, it can be predicted with the help of computational electromagnetics. Concerning the second approach, the following procedure was recently proposed: construction of a three-dimensional model of a target, based on available images and any relevant data, and then computation of the target RCS, with the Physical Optics approximative method. In the present approach, this procedure is applied to an anti-ship cruise missile in order to compute its RCS. Finally, the expected detection range for various naval radars is calculated.

scholarly journals Radar Cross-Section Formulation of a Shell-Shaped Projectile Using Modified PO Analysis

2012 ◽  
Vol 2012 ◽  
pp. 1-9
Author(s):  
Mohammad Asif Zaman ◽  
Md. Abdul Matin
Keyword(s):  
Differential Geometry ◽  
Cross Section ◽  
Current Density ◽  
Surface Current ◽  
Radar Cross Section ◽  
Analysis Procedure ◽  
Physical Optics ◽  
Surface Current Density ◽  
Filtering Method ◽  
Good Agreement

A physical optics based method is presented for calculation of monostatic Radar Cross-Section (RCS) of a shell-shaped projectile. The projectile is modeled using differential geometry. The paper presents a detailed analysis procedure for RCS formulation using physical optics (PO) method. The shortcomings of the PO method in predicting accurate surface current density near the shadow boundaries are highlighted. A Fourier transform-based filtering method is proposed to remove the discontinuities in the approximated surface current density. The modified current density is used to formulate the scattered field and RCS. Numerical results are presented comparing the proposed method with conventional PO method. The results are also compared with published results of similar objects and found to be in good agreement.

scholarly journals An UWB Physical Optics Approach for Fresnel-Zone RCS Measurements on a Complex Target at Non-Normal Incidence

Sensors ◽  
2019 ◽  
Vol 19 (24) ◽  
pp. 5454
Author(s):  
Ilie Valentin Mihai ◽  
Razvan Tamas ◽  
Ala Sharaiha
Keyword(s):  
Cross Section ◽  
Fresnel Zone ◽  
Normal Incidence ◽  
Radar Cross Section ◽  
Physical Optics ◽  
Fast Method ◽  
Field Zone ◽  
Fresnel Region ◽  
Receiving Antenna ◽  
Complex Target

In this paper, we propose a fast method for measuring the radar cross section of a complex target at non-normal incidences and Fresnel region antenna-to-target distances. The proposed method relies both on the physical optics approach and on averaging the field distribution over the transmitting and receiving antenna apertures. The ratio between the analytical expression of the radar cross section at far-field and Fresnel region results in a field-zone extrapolation factor. The RCS resulting from the scattering parameters measured at Fresnel region distances is then corrected with that field-zone extrapolation factor. The method is suitable to be used in a perturbed, multipath environment by applying the distance averaging technique, coupling subtraction or time gating. Our technique requires a very simple measuring configuration consisting of two horn antennas and a vector network analyzer. The experimental validation of the proposed technique demonstrates reasonable agreement with simulated radar cross section at non-normal incidence.

FDTD method for the scattered-field equation to calculate the radar cross-section of a three-dimensional target

2018 ◽  
Vol 17 (3) ◽  
pp. 1013-1018 ◽  
Author(s):  
Jian-Xiao Liu ◽  
Lu Ju ◽  
Ling-Hui Meng ◽  
Yu-Jie Liu ◽  
Zhi-Gang Xu ◽  
...  
Keyword(s):  
Field Equation ◽  
Cross Section ◽  
Scattered Field ◽  
Fdtd Method ◽  
Three Dimensional ◽  
Radar Cross Section

Characterising radar cross section signature for evaluation in test range

2018 ◽  
Author(s):  
Pravakar Mallick ◽  
Milan Kumar Pal ◽  
Arun Kumar Ray ◽  
Raghvendra Kumar Chaudhary
Keyword(s):  
Cross Section ◽  
Radar Cross Section ◽  
Test Range

Analysis of artificial corner reflector’s radar cross section: a physical optics perspective

2012 ◽  
Vol 6 (8) ◽  
pp. 2755-2765 ◽  
Author(s):  
Xin-Jian Shan ◽  
Jing-Yuan Yin ◽  
Dan-Lin Yu ◽  
Cheng-Fan Li ◽  
Jun-Juan Zhao ◽  
...  
Keyword(s):  
Cross Section ◽  
Radar Cross Section ◽  
Physical Optics

scholarly journals Comparison of Three Different Styles of Submarine Sails on Electromagnetic Scattering under the Detection of Airborne Radar

2018 ◽  
Vol 17 ◽  
pp. 02003
Author(s):  
Ji Liu ◽  
Peilin Huang ◽  
Yaodong Zhao ◽  
Jinzu Ji ◽  
Fengli Xue
Keyword(s):  
Cross Section ◽  
Electromagnetic Scattering ◽  
Pitch Angle ◽  
Elevation Angle ◽  
3D Models ◽  
Radar Cross Section ◽  
Physical Optics ◽  
Airborne Radar ◽  
Range Analysis ◽  
Radar Antenna

This paper studies radar cross section of submarine sails on the water. Under the detection of the enemy’s airborne radar, considering the motion of the submarine, the sail model of radar pitch angle incidence range analysis is established. By using CATIA software, the 3D models of AKULA sail, SUBOFF sail and VICTOR sail are built. On the basis of the physical optics method and the equivalent currents method, the scattering characteristics of sails RCS(radar cross section) are simulated under X radar band. Through the microwave anechoic chamber test, this paper verifies the accuracy of the combination of the physical optics method and the equivalent electromagnetic flow method. The influence of the distance from the airborne radar to the sail on the pitch angle of the electromagnetic wave is discussed, with the elevation angle of the radar antenna varies. Then, we illustrate the characteristics of circumferential direction RCS of the sail under different pitch angles. Finally, the mean RCS of the sail at a given pitch angle is simulated. The results show that the AKULA sail is considerably superior to SUBOFF sail and VICTOR sail on stealth performance with the pitch angle less than 4° . But when the pitch angle exceeds 10°, the SUBOFF sail can be given priority.

Study of ECAE Process by Using FEM

2006 ◽  
Vol 526 ◽  
pp. 193-198 ◽  
Author(s):  
Rodrigo Luri ◽  
C.J. Luis-Pérez
Keyword(s):  
Cross Section ◽  
Strain Field ◽  
Equal Channel Angular Extrusion ◽  
Three Dimensional ◽  
Extrusion Process ◽  
The Finite Element Method ◽  
Dimensional Model ◽  
Three Dimensional Model ◽  
Circular Section ◽  
Processed Material

In this work, the strain field attained by using a severe plastic deformation (SPD) process called equal channel angular extrusion (ECAE) is studied by the finite element method (FEM). The three-dimensional model with circular section includes shear friction between the part and the die, the material strain hardening behaviour and a rigid-deformable contact between the billet and the die. In the ECAE process the part is extruded through two channels with similar diameter that intersect at an angle. When the extrusion process has been performed, the processed material remains it cross section, so there is not any geometric limitation to achieve the desired plastic strain. There are different ways of processing the material by using the ECAE process; those ways of processing are called routes. In this work two passages of route C have been simulated. Using route C means that the billet has been rotated 180º between each passage. Deformations imparted to the processed material have been calculated and a comparison with experimental results has been carried out.

Sign in / Sign up

Export Citation Format

Share Document