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Method for determining electromagnetic parameters of radio wave propagation environment

A propagation environment and radio wave technology, applied in CAD numerical modeling, design optimization/simulation, etc., to achieve the effect of improving correction accuracy, increasing accuracy, reliable ray tracing channel simulation or channel prediction

Active Publication Date: 2020-06-02
BEIJING JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0004] The present invention provides a method for determining the electromagnetic parameters of the radio wave propagation environment to solve the defects in the prior art problems

Method used

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  • Method for determining electromagnetic parameters of radio wave propagation environment
  • Method for determining electromagnetic parameters of radio wave propagation environment
  • Method for determining electromagnetic parameters of radio wave propagation environment

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0030] figure 1 A schematic flowchart of a method for determining the electromagnetic parameters of the radio wave propagation environment provided by this embodiment, refer to figure 1 , the method includes:

[0031] S1 actually measures the received power of several test points in the radio wave propagation environment, and draws a distribution diagram of the measured received power according to the received power.

[0032] The radio wave propagation environment diagram is a digital description of the current radio wave propagation environment, which can be visualized through MATLAB, PYTHON and other software tools, and finally describes and portrays the radio propagation environment intuitively. In the experiment, the visualization of the radio wave propagation environment map can be completed by measuring the received power of some points in the laboratory indoor model.

[0033] Given the position and operating frequency of the transmitting antenna, fix the position of t...

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Abstract

The invention provides a method for determining electromagnetic parameters of a radio wave propagation environment, and the method comprises the steps: actually measuring radio propagation informationof a plurality of test points of the radio wave propagation environment, and drawing an actual measurement radio propagation environment map according to the radio propagation information; establishing a radio wave propagation environment simulation model, and simulating the simulation model by adopting a rasterization processing method to obtain a plurality of simulation radio wave propagation environment diagrams; comparing the actual measurement radio propagation environment diagram with each simulation radio propagation environment diagram to obtain a simulation radio propagation environment diagram closest to the test point; and extracting corresponding electromagnetic parameters from the radio wave propagation environment simulation model according to the obtained simulation radio propagation environment diagram closest to the test point. According to the method, the electromagnetic parameters required by ray tracking can be corrected or estimated only by performing local actualmeasurement, so that the operation complexity is reduced, and more accurate and reliable ray tracking channel simulation and channel prediction can be realized.

Description

technical field [0001] The invention relates to the technical field of radio propagation, in particular to a method for determining electromagnetic parameters of a radio wave propagation environment. Background technique [0002] The ray tracing method is a method applied to a deterministic model. This method needs to first model the propagation model, such as the shape, location, material properties of the building, etc., and then judge the direct rays, reflections and scattering one by one, and finally The received power and other characteristics of the receiving point are obtained. A deterministic model is a model that needs to be supported by precise data. It requires detailed information in the channel environment, such as the precise location and size of buildings and natural objects, and the distribution of corresponding electrical parameters. When the ray tracing method is used to model the wireless propagation environment, the electromagnetic parameters of the refl...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F30/20G06F111/10
Inventor 赵友平郭嘉琦王伯诚
Owner BEIJING JIAOTONG UNIV
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