A novel domain decomposition-finite difference time domain method for composite scattering from a target above rough surface

Tian, Weiming; Wei, Bing; He, Xinbo

doi:10.1080/17455030.2019.1581388

Cited by 4 publications

(1 citation statement)

References 22 publications

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“…The study of target and environmental electromagnetic scattering characteristics is a very important and widely used topic in the field of remote sensing and monitoring. In recent years, with the rapid development of radar remote sensing and target detection technology, the study of target and environmental electromagnetic scattering characteristics [17][18][19][20][21][22][23][24] has received more and more extensive attention from scholars.…”

Section: Literature Analysismentioning

confidence: 99%

A Fast Coupled Iterative Approach for Computing 3D Composite Scattering from Dielectric Rough Surfaces and Target

Zhao

2024

PIER C

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This paper proposes a fast coupled iterative algorithm for calculating the complex three-dimensional scattering of rough dielectric surfaces and conductive targets. The algorithm is designed for practical composite electromagnetic scattering models and establishes a coupled iterative integral equation system for the rough surface and target. Iterative calculations are performed until the specified accuracy is achieved. To improve computational speed, Physics Based Two Grid-Sparse Matrix Canonical Grid (PB-SM) acceleration algorithm and a hybrid domain basis function based on quadratic surface modeling are applied using the fast Method of Moments (MoM) for fast computation. The effectiveness of the fast coupled iterative algorithm is verified by comparing the results with those of high-precision MoM calculations. During the calculation process, error iteration curves are plotted to show that the error can be reduced to 10 −6 after 10 iterations, and the convergence rate meets the requirements of practical calculations. Based on the algorithm proposed in this paper, several examples are calculated, and the scattering variation of targets in different environments is mainly studied, and suggestions are given to improve the accuracy of target detection and identification in complex environments. The results of the study have some significance for ultra-low altitude target detection, precision strike, stealth and anti-stealth.

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