The Radar Cross Section Analysis of Radome Based on Conjugate Gradient Fast Fourier Transform

• 作者: Bing Liu Hanming Gu Hao Gu Huan Yu Kang Fan Yanjiao Ge Yingkai Zhou
• 来源期刊: 应用数学与应用物理(英文)
• 学科: 数学
• 关键词: RADOME RADAR CROSS Section VOLUME INTEGRAL EQUATION CG-FFT
• 年，卷（期）: 2020,（5）
• 页码范围: 933-940
• 页数: 8页
• 分类号: O17

摘要

This paper presents an algorithm for analysis of the dielectric radomes. In this method, the radome is discretized by a regular grid with rooftop basic functions. The Volume Integral Equation (VIE) for 3D dielectric object is transformed to linear system by Galerkin’s testing formulation. Furthermore, the linear system is presented by Toeplitz matrix which can be solved by the Conjugate Gradient algorithm combined with Fast Fourier Transform (CG-FFT) iteratively. Also, the algorithm requires less computational complexity and memory. This paper simulates the mono-static Radar Cross Section of dielectric radome by the CG-FFT, which was validated against commercial software FEKO.