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A method for modelling a random rough object and a storage medium

A modeling method and rough body technology, applied in special data processing applications, complex mathematical operations, instruments, etc., can solve problems such as inapplicability, and achieve the effect of ensuring accuracy and efficiency, maintaining topological relationships, and low mathematical complexity

Active Publication Date: 2019-01-18
XIAN INSTITUE OF SPACE RADIO TECH
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Problems solved by technology

So far, there is no existing technology for the geometric modeling of arbitrary shape complex targets with random rough undulations, especially for the geometric modeling of arbitrary shape 3D complex targets with random rough undulations, but for rough surfaces (such as ocean surface, There are many methods for rough geometric modeling of land surface, etc., but the existing methods for rough geometric modeling of rough surfaces are not suitable for complex targets with arbitrary shapes, especially three-dimensional complex targets with arbitrary shapes.

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  • A method for modelling a random rough object and a storage medium
  • A method for modelling a random rough object and a storage medium
  • A method for modelling a random rough object and a storage medium

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[0046] A random rough object modeling method, the main idea of ​​which is: use the power spectrum function, based on the Monte Carlo method, and use the two-dimensional inverse Fourier transform to obtain the height distribution of the two-dimensional random rough surface; use any complex three-dimensional object to correspond to Based on the smooth surface target model, adaptive meshing is performed on it to obtain basic model parameter information such as points, normals, and surfaces of the mesh model; based on the principle of vector superposition, the two-dimensional random rough surface height distribution vector is superimposed on the smooth surface In the mesh model of the target, an arbitrarily complex three-dimensional target rough model with random rough undulations on the surface is obtained.

[0047] Specifically include the following steps:

[0048] In step (1), a smooth surface object model of a random rough object is established, and grid parameters of the smoo...

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Abstract

A method for model random rough object features that the power spectrum function and Monte Carlo method are used to obtain the height distribution of two-dimensional random rough surface by two-dimensional inverse Fourier transform. Based on the smooth geometrical parameter surface model of complex object, the basic model parameters such as point, normal, surface and so on are obtained by adaptivemesh generation. Based on the principle of vector superposition, the height distribution vector of two-dimensional random rough surface is superposed on the mesh model of the original complex object,and the rough model of arbitrary complex object with random roughness fluctuation is obtained.

Description

technical field [0001] The invention relates to a random rough object modeling method and a storage medium, and belongs to the technical field of space microwave remote sensing. Background technique [0002] When the electromagnetic wave radiated by microwave radar interacts with the target, the fluctuation characteristics of the target surface are usually not considered, that is, the target surface is considered to be smooth. However, as the frequency of electromagnetic radiation increases, the undulation characteristics of the target surface gradually appear. Especially in the laser band, the influence of the random undulation of the target surface on the echo must be considered. So far, there is no existing technology for the geometric modeling of arbitrary shape complex targets with random rough undulations, especially for the geometric modeling of arbitrary shape 3D complex targets with random rough undulations, but for rough surfaces (such as ocean surface, There are ...

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Application Information

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IPC IPC(8): G06F17/50G06F17/14
CPCG06F17/14G06F30/20Y02E60/00
Inventor 陈刚苏翔党红杏李浩谭小敏
Owner XIAN INSTITUE OF SPACE RADIO TECH
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