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Train positioning and navigation method and system, electronic equipment and storage medium

A technology for train positioning and trains, which is applied to satellite radio beacon positioning systems, navigation, surveying and mapping, and other directions. The effect of reducing operating time and enhancing positioning efficiency

Pending Publication Date: 2021-12-31
CASCO SIGNAL
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the existing train positioning equipment has problems such as discontinuous train-ground information transmission, low data transmission rate, error accumulation in positioning results, high investment cost, and inconvenient maintenance; Additional positioning equipment is installed, and the self-coordinate system is unified with the earth coordinate system to complete high-precision positioning
However, there are cumulative errors in inertial navigation, which need to be combined with satellite positioning systems to eliminate cumulative errors
However, the train satellite technology is susceptible to interference, occupies scarce spectrum resources, etc., and the absorption of electromagnetic waves by tunnel building materials and the electromagnetic wave shielding effect of steel structures limit the role of satellite positioning technology in tunnel positioning.
Based on the above reasons, the existing train positioning technology restricts the development of the Communication Based Train Control System (hereinafter referred to as CBTC) to a certain extent, so a new positioning technology is urgently needed to make up for or replace the current With train positioning technology

Method used

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  • Train positioning and navigation method and system, electronic equipment and storage medium
  • Train positioning and navigation method and system, electronic equipment and storage medium
  • Train positioning and navigation method and system, electronic equipment and storage medium

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Embodiment Construction

[0119] A method, system, electronic equipment and storage medium for train positioning and navigation provided by the present invention are clearly and completely described below in conjunction with the accompanying drawings and specific embodiments. Obviously, the described embodiments are only some embodiments of the present invention, and Not all examples. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0120] It should be noted that the letters in this embodiment, such as "A", "B", "C", "W", "P", "X", "Y", and "M" are only for the convenience of describing the present invention. Examples should not be construed as limitations on the present invention.

[0121] Such as figure 1 As shown, a method for train positioning and navigation includes:

[0122] Step S1, using the GNSS sensor to acquire GNSS signals.

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Abstract

The invention discloses a train positioning and navigation method and system, electronic equipment and a storage medium, and the method comprises the steps: obtaining a GNSS signal, and when the signal intensity of the GNSS signal does not meet a preset standard; acquiring a position fingerprint database of the train based on the time sequence in the train running process; obtaining a first SINS signal; and obtaining position information of the train from the position fingerprint database by adopting a DTW algorithm, combining the position information of the train with the first SINS signal, and correcting an accumulated error deviation value of the first SINS signal by adopting Kalman filtering to obtain an optimal estimation position of the train. The method has the advantages of high precision, high reliability, high accuracy and the like.

Description

technical field [0001] The invention relates to the technical field of rail transit train positioning, in particular to a method, system, electronic equipment and storage medium for train positioning and navigation. Background technique [0002] The existing subway train positioning equipment mainly includes digital audio track circuit, cross induction loop line, query transponder, axle counter, speed sensor, accelerometer, Doppler radar, leaky cable, cracked waveguide, etc. Train positioning technology mainly includes wireless Local Area Network (Wireless Local Area Network, referred to as WLAN), Long Term Evolution (Long Term Evolution, hereinafter referred to as LTE) system and integrated Global Navigation Satellite System (Global Navigation Satellite System, hereinafter referred to as GNSS), etc. However, the existing train positioning equipment has problems such as discontinuous train-ground information transmission, low data transmission rate, error accumulation in pos...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S19/47G01C21/16G01C21/20
CPCG01S19/47G01C21/165G01C21/20
Inventor 马钰昕石孝文韩熠苏阿峰刘螺辉朱林贤黄辉王美茜
Owner CASCO SIGNAL
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