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Rough surface and multi-target composite scattering simulation method based on iterative physical optics

A technology of physical optics and simulation methods, which is applied in the field of radar electromagnetic simulation and can solve complex problems such as solving

Active Publication Date: 2018-12-28
XIDIAN UNIV
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Problems solved by technology

For the composite electromagnetic scattering between a rough surface and multiple targets, it is necessary to consider the coupled scattering between the rough surface and each target, as well as the coupled scattering between any two targets. Compared with the composite scattering between the rough surface and a single target, the relative quite complicated

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  • Rough surface and multi-target composite scattering simulation method based on iterative physical optics
  • Rough surface and multi-target composite scattering simulation method based on iterative physical optics
  • Rough surface and multi-target composite scattering simulation method based on iterative physical optics

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Embodiment Construction

[0075] In order to make the object, technical solution and advantages of the present invention more clear, the present invention will be further described in detail below in conjunction with the examples. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0076] Aiming at the defects of low simulation efficiency, low simulation versatility and high memory requirements in the prior art, the present invention provides an electromagnetic field high-frequency method based on an iterative strategy, which reduces simulation memory requirements and improves simulation efficiency and engineering efficiency while ensuring accuracy. applicability.

[0077] The application principle of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0078] like figure 1 As shown, the iterative physical optics-based simulation method for complex...

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Abstract

The invention belongs to the technical field of radar electromagnetic simulation, and discloses a rough surface and multi-target composite scattering simulation method based on iterative physical optics. The method comprises the following steps: inputting a rough surface power spectral density function and a roughness parameter, obtaining a rough surface geometric contour by the Monte Carlo method; using the simulation software FEKO to geometrically model the targets; adding the geometric models of the targets to the rough surface model to generate a composite model; using the physical opticsmethod to calculate the surface induced electromagnetic current directly scattered by the rough surface and each target; calculating the surface-induced electromagnetic current between the rough surface and the targets and between the targets according to the iterative strategy and Huygens principle; obtaining a far-field total scattering field of the composite model by the Huygens principle; andobtaining a two-station radar scattering coefficient of the composite model based on the total scattering field and the incident field of the composite model. The rough surface and multi-target composite scattering simulation method based on iterative physical optics has the advantages such as low memory requirement, high simulation efficiency and strong versatility of the simulation method.

Description

technical field [0001] The invention belongs to the technical field of radar electromagnetic simulation, and mainly relates to high-frequency simulation of electromagnetic scattering, in particular to a composite scattering simulation method based on iterative physical optics of a rough surface and multiple targets, which is used to obtain the far-zone dual-station radar scattering coefficient of the composite model . Background technique [0002] In recent years, with the rapid development of radar technology, the research on the electromagnetic scattering characteristics of rough sea surface and target composite model has important application value in the fields of environmental remote sensing, radar detection, target recognition and so on. When the radar emits electromagnetic waves to irradiate the object, the scattered echo of the object often contains the geometric shape and electromagnetic parameter information of the irradiated object, which will provide important in...

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Application Information

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IPC IPC(8): G01S7/40
CPCG01S7/40Y02A90/10
Inventor 李娟郭立新李科任泽林柴水荣魏仪文孟肖
Owner XIDIAN UNIV
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