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Field strength prediction method based on data interpolation method based on ray tracing model

A ray tracing and data interpolation technology, which is applied in image data processing, electrical digital data processing, special data processing applications, etc., can solve problems such as inaccuracy, mirror method cannot meet universal applicability, and large prediction error of test ray method. Achieve the effect of improving prediction speed, ensuring correctness and accuracy, and good effect

Active Publication Date: 2019-10-25
TIANJIN UNIV
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Problems solved by technology

But both have their limitations. The traditional mirror image method cannot meet the universal applicability in different environments, while the test ray method has a large prediction error and is not accurate enough.

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  • Field strength prediction method based on data interpolation method based on ray tracing model
  • Field strength prediction method based on data interpolation method based on ray tracing model
  • Field strength prediction method based on data interpolation method based on ray tracing model

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Embodiment Construction

[0039] The data interpolation algorithm is introduced on the basis of modeling and calculation using the ray tracing algorithm, and a three-step analysis method is proposed by combining the nearest neighbor interpolation, reciprocal distance weighting and Lagrangian interpolation, so as to maintain the ray tracing model to predict the field strength. Accuracy is achieved while improving computational complexity and efficiency.

[0040] Field strength predictions are made based on calculated field strength values ​​from the ray tracing model. In the indoor scene environment, we first make the scene rectangular grid, the rectangular grid size of the field strength is the same, and the grid is evenly distributed in the whole scene area. Then use a fast forward ray tracing algorithm to calculate the field strength value of the grid center point, store the calculated value of the grid center field strength in the database, and use the three-step analysis method to predict any field...

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Abstract

The invention relates to an electromagnetic wave field intensity prediction technology. The calculation complexity is improved while the field intensity prediction accuracy of a ray tracing model is kept, so that the efficiency is improved. According to the adopted technical scheme, a ray tracing model-based method for predicting field intensity by a data interpolation method comprises the steps of firstly, performing scene modeling, and performing rectangular meshing on a scene, wherein rectangular meshes of the field intensity are same in size and the meshes are uniformly distributed in a whole scene region; and secondly, calculating a field intensity value of a mesh center point by utilizing a forward ray tracing algorithm, storing the mesh center field intensity calculation value in a database, and then predicting a field intensity value of any field point in a whole field intensity region by utilizing three-step analysis data interpolation. The method is mainly applied to an electromagnetic wave field intensity prediction occasion.

Description

technical field [0001] The present invention relates to electromagnetic wave field strength prediction technology, specifically, to data interpolation method field strength prediction based on ray tracing model. Background technique [0002] Since the 1990s, ray-tracing algorithms have received extensive attention and are in a rapid development stage. At present, the widely used deterministic method is the ray-tracing model based on geometric optics and consistent diffraction theory. The difficulty and key of ray tracing is the search of the traced path. At present, the path search can be divided into two categories: forward search algorithm and reverse search algorithm. These two algorithms have their own unique advantages, and correspondingly, there are disadvantages that cannot be ignored. To refine these two types of tracking methods, they can be roughly divided into the following five methods: mirror image method, minimum optical path method, test ray method, bounced r...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F17/50G06T17/05
CPCG06F30/20G06T17/05
Inventor 杨晋生郭雪亮孔祥博陈为刚
Owner TIANJIN UNIV
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