Three-dimensional visualization method for electromagnetic environment body data

Abstract

The invention belongs to the technical field of electromagnetic environment visualization, and discloses a three-dimensional visualization method for electromagnetic environment body data. The method comprises the following steps of: determining the electromagnetic environment body data by a radio wave propagation physical model; dividing the electromagnetic environment body data into a tetrahedron structure, forming a two-dimensional texture in a vertex index manner according to the vertexes of the tetrahedron, and inputting a tetrahedron vertex function value texture and a vertex index texture into a graphics processor; generating contour surface vertexes according to predetermined contour surface threshold judgment, connecting the contour surface vertexes of same threshold into a contour surface, and forming a plurality of contour surfaces of the electromagnetic environment; and displaying the edge of an electromagnetic environment model in a manner of extruding according to a relation between vertex normal vectors and view points, and fusing and embedding the plurality of contour surfaces into the three-dimensional environment in a semitransparent manner. With the method, the three-dimensional electromagnetic environment can be represented visually and intuitively, more internal information representation of the electromagnetic environment are provided, and the correctnessand the completeness of the electromagnetic environment representation and the definition of a boundary contour are all improved.

Description

technical field [0001] The invention relates to the technical field of electromagnetic environment visualization, in particular to a method for three-dimensional visualization of electromagnetic environment volume data. Background technique [0002] With the wide application of electromagnetic technology in various fields of society, the electromagnetic environment is becoming more and more complex. Due to the invisible electromagnetic environment, it is difficult for people to intuitively analyze and judge the electromagnetic environment. At present, there are a wide range of frequency-using equipment, a large number of electromagnetic equipment, a wide range of frequency spectrum, a large frequency demand, and an extremely complex electromagnetic environment. However, the electromagnetic environment cannot be seen or touched. We can only analyze the electromagnetic information in space through various detection equipment, and can only reflect the electromagnetic distributi...

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Problems solved by technology

From the latest research report (see: Chen Peng. Research on radar range performance technology in virtual battlefield environment [D]. Changsha, Hunan: University of National Defense Science and Technology, 2007. Zhou Qiao, Chen Jingwei, etc. 3D visualization technology of electromagnetic environment [J ].Computer Engineering, 2008.). The visualization of the electromagnetic environment coverage of typical equipment such as radar and radio stations has adopted the visualization technology of isosurface. By extracting the isosurface of a certain characteristic value of the electromagnetic environment, the feature can However, because the traditional isosurface technology it uses only expresses the electromagnetic environment information through a single contour information, it can only map some attributes of the original data to the grid contour model. It cannot reflect the overall picture and details of the entire data, which will cause the loss of internal details in a large number of spatial data fields, and cannot fully describe the electromagnetic environment information, which is not conducive to the information visualization of spatial data fields such as the electromagnetic environment

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