A method for judging the visibility of millimeter-wave radar model targets based on 3D information

A millimeter-wave radar and model technology, applied in the field of virtual test and verification of smart cars, to achieve the effect of improving fidelity

Active Publication Date: 2021-10-29
JILIN UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The model and method of radar reflection intensity calculation and visibility judgment based on the 3D features of the object surface have not been reported yet.

Method used

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  • A method for judging the visibility of millimeter-wave radar model targets based on 3D information
  • A method for judging the visibility of millimeter-wave radar model targets based on 3D information
  • A method for judging the visibility of millimeter-wave radar model targets based on 3D information

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Embodiment

[0032] A method for judging the visibility of a millimeter-wave radar model target based on 3D information, the specific process is as follows:

[0033] 1. Obtain the 3D information of the target object:

[0034] Since the surface shape and size of the object in the real scene are extremely complex, it is impossible to completely capture the complex physical structure of the object in order to ensure the simulation efficiency of the model. This embodiment uses simple geometry, such as geometric planes, spheres, cylinders, and cubes. On the premise of reflecting the geometric characteristics of the object, by simplifying the geometric structure of the object, 3D information that can reflect the radar reflection intensity of the object is obtained.

[0035] This embodiment mainly focuses on the analysis of vehicles and pedestrians. According to the appearance characteristics of vehicles and pedestrians, simple geometry is used for simplification, and the simplified model is as ...

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Abstract

The invention discloses a method for judging the visibility of a millimeter wave radar model target based on 3D information. Input data for radar model to perform occlusion calculation and RCS calculation; to establish a millimeter-wave radar model, first perform geometrical graphics-based target object occlusion calculation in the millimeter-wave radar model, and obtain completely occluded objects and mark them as invisible objects; For an object that is not completely blocked, calculate its visible area and output it; calculate the echo intensity value of the visible area of ​​the target object according to the 3D model information and state information of the target object stored in step 1; judge the target visibility: the calculated The echo intensity value in the visible area of ​​the target object is compared with the preset visible threshold value of the radar echo intensity in the millimeter-wave radar model to determine the final visibility of the target object.

Description

technical field [0001] The invention belongs to virtual test verification of smart cars, and specifically establishes a method for judging the visibility of a target object by a millimeter-wave radar detection model considering the 3D information of the target object. Background technique [0002] Virtual sensor modeling is a very important part of smart car test evaluation. The millimeter-wave radar virtual model is a vehicle-mounted sensor model widely used in the virtual test and evaluation of smart cars, and it is very important for the modeling research of millimeter-wave radar. During the research process, it was found that the shape, angle, material and area parameters of the outer surface of the target object have a great influence on the reflection of the millimeter-wave radar. At present, the models for millimeter-wave radar are all based on geometrical graphics for occlusion judgment or adding the physical characteristics of the propagation process for visibility...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01S13/88G01S13/89G01S13/931
CPCG01S13/88G01S13/89G01S13/931
Inventor 詹军杨凯王战古祝怀男
Owner JILIN UNIV
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