A Parallel FDTD/ADI-PE Method for Ultralarge-Scale Propagation Modeling of ILS Signal Analysis

被引：8

作者：

Huang, Lu ^{[1
]}

Wu, Xiaoping ^{[1
]}

Li, Zihao ^{[1
]}

Lu, Yongdong ^{[2
]}

Wang, Mingjia ^{[2
]}

Long, Yunliang ^{[1
]}

机构：

[1] Sun Yat Sen Univ, Sch Elect & Informat Technol, Guangzhou 510006, Peoples R China

[2] Middle South Reg Air Traff Management Bur, Dept CAAC, Guangzhou 510006, Peoples R China

来源：

IEEE ANTENNAS AND WIRELESS PROPAGATION LETTERS | 2020年 / 19卷 / 12期

基金：

美国国家科学基金会;

关键词：

Time-domain analysis; Finite difference methods; Computational modeling; Mathematical model; Numerical models; Data transfer; Propagation; Alternating-direction-implicit parabolic equation (ADI-PE); finite-difference time domain (FDTD); instrument landing system (ILS); tridiagonal matrix solver; WAVE PROPAGATION;

D O I：

10.1109/LAWP.2020.3029193

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

In this letter, we propose a high-accuracy low-cost hybrid finite-difference time-domain (FDTD)/alternating-direction-implicit parabolic equation (ADI-PE) method for ultralarge-scale electromagnetic simulation on a distributed computing platform. The hybrid method offers fast and precise 3-D deterministic radio-wave propagation predictions in a difficult-terrain scenario with specific detailed structures in both near field and far field. Since the typical parallel ADI-PE method suffers from high-frequency data communication between different calculation cores, which greatly discount simulation efficiency in bandwidth-constrained environments, we adopt a Woodbury-formula-based parallel algorithm to find inverse matrixes of tridiagonal matrixes so that implicit and explicit steps of the PE can be finished in local computing cores. Simulation results for the instrument landing system (ILS) demonstrate the capability of the proposed method in achieving the state-of-the-art performance.

引用

页码：2245 / 2249

页数：5

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