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Subway track line wireless environment fingerprint database construction method based on SVM

A wireless environment and construction method technology, applied in the field of rail transit, can solve the problems of fast moving speed, different application scenarios, large outdoor coverage area, etc., and achieve the effect of large fluctuations

Pending Publication Date: 2021-12-31
上海伽易信息技术有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The subway track line belongs to the outdoor wireless environment. Not only the outdoor coverage area is large, but also the wireless signal detection terminal is deployed on the high-speed train, and the moving speed is fast. In addition, the outdoor propagation model is completely different from the indoor propagation model, and the application scenarios of the two are different. Therefore, The above invention is not applicable to the construction of wireless environment fingerprints for subway rail lines

Method used

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  • Subway track line wireless environment fingerprint database construction method based on SVM
  • Subway track line wireless environment fingerprint database construction method based on SVM
  • Subway track line wireless environment fingerprint database construction method based on SVM

Examples

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Embodiment 1

[0094] A method for constructing a wireless environment fingerprint database of subway rail lines based on SVM, comprising the following steps:

[0095] Step 1: Divide the line from Beiqiao Station to Yindu Road Station of Metro Line 5 into several grids, and number the grids;

[0096] Step 2: When the electric passenger train is running normally, the on-board monitoring equipment collects wireless feature information for each grid;

[0097] Step 3: Construct a wireless environment fingerprint database and record the fingerprint information of each grid;

[0098] Step 4: Based on the SVM algorithm, the grid fingerprint information of the wireless environment fingerprint library is adaptively updated.

[0099] An example of the wireless environment fingerprint library for subway rail lines is as follows:

[0100] Table 1 Example of wireless environment fingerprint library for subway rail lines

[0101]

[0102]

[0103] The wireless environment fingerprint library of s...

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Abstract

The invention discloses a subway track line wireless environment fingerprint database construction method based on SVM, and the method comprises the following steps: 1, dividing a subway track line into a plurality of grids, and numbering the grids; 2, when the electric passenger train runs normally, enabling the vehicle-mounted monitoring equipment to collect wireless feature information of each grid; 3, constructing a wireless environment fingerprint database, and recording fingerprint information of each grid; and step 4, realizing self-adaptive updating of the grid fingerprint information of the wireless environment fingerprint database based on an SVM algorithm.

Description

technical field [0001] The invention relates to a method for constructing a wireless environment fingerprint library for subway track lines, in particular to a method for building a wireless environment fingerprint library for subway track lines based on SVM, and the invention belongs to the field of rail transportation. Background technique [0002] With the development of wireless technology, the use of radio has brought great convenience to people's life, but at the same time, the increasingly complex wireless electromagnetic environment has also brought great trouble to the use of wireless devices. All kinds of interference affect the normal use of subway wireless equipment, and the serious ones will affect the safety of subway driving and bring great hidden dangers to subway operation. For this reason, it is particularly important to establish a wireless monitoring system suitable for use in the subway, to keep abreast of the wireless environment of the subway, to give ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W4/42H04W24/02H04W24/08H04W64/00G06K9/62
CPCH04W4/42H04W24/02H04W24/08H04W64/006G06F18/2411G06F18/214
Inventor 李宏宇
Owner 上海伽易信息技术有限公司
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