Underground tunnel-oriented ridge regression two-dimensional positioning method and system

A technology for underground tunnels and two-dimensional positioning, which can be used in services based on location information, services based on specific environments, and complex mathematical operations, and can solve problems such as high noise sensitivity and positioning errors.

Pending Publication Date: 2021-12-31
STATE GRID JIANGSU ELECTRIC POWER CO ELECTRIC POWER RES INST +1
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  • Claims
  • Application Information

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Problems solved by technology

[0004] The present application discloses a two-dimensional ridge regression positioning method and system for underground tunnels, which is used to solve the problem in the prior art that compared with the widely used indoor positioning technology, underground tunnels focus on the environment of pipe corridors with large

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  • Underground tunnel-oriented ridge regression two-dimensional positioning method and system
  • Underground tunnel-oriented ridge regression two-dimensional positioning method and system
  • Underground tunnel-oriented ridge regression two-dimensional positioning method and system

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Embodiment Construction

[0069] In order to solve the existing technology, compared with the widely used indoor positioning technology, underground tunnels focus on the environment of large aspect ratio pipe corridors. Such environments are constrained by geographical factors. When using the traditional least squares positioning method, due to the solution There is an inverse of the ill-conditioned matrix in , which is very sensitive to noise, and a small ranging error will lead to a technical problem of a large positioning error. This application discloses a ridge facing an underground tunnel through the following two embodiments. Return to the two-dimensional positioning method and system.

[0070] The first embodiment of the present application discloses a two-dimensional ridge regression positioning method for underground tunnels, the method is applied to positioning tags in underground tunnels, and multiple positioning base stations are set on both sides of the passage of the underground tunnel, s...

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Abstract

The invention relates to the technical field of tunnel positioning, and discloses an underground tunnel-oriented ridge regression two-dimensional positioning method and system. The method comprises the following steps: firstly, receiving signal arrival time from different positioning base stations through a positioning label to obtain a TDOA value; further determining an observation vector and a design matrix of the least square problem according to the position of the base station; calculating a condition number after the transpose of the design matrix is multiplied by the design matrix to estimate the noise sensitivity, and setting a proper ridge regression coefficient according to the condition number; and finally, determining a position vector, and determining coordinates of the positioning label according to the position vector. Through the above steps, the method overcomes the common noise sensitivity of TDOA positioning in an underground tunnel environment, and greatly improves the positioning precision and stability.

Description

technical field [0001] The present application relates to the technical field of tunnel positioning, in particular to a two-dimensional ridge regression positioning method and system for underground tunnels. Background technique [0002] With the advancement of urbanization, the living and production environment in the metropolitan area has gradually shifted from above ground to underground. Environments such as underground business circles and underground power grid tunnels cannot use satellites for positioning because their satellite signals are blocked. The location information of personnel is of great significance for commercial applications and personnel safety. [0003] At present, in underground tunnels, the least squares positioning method is usually used for positioning, specifically methods based on weighted least squares such as least squares and Chan algorithm. However, compared with the widely used indoor positioning technology, underground tunnels focus on the...

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Application Information

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IPC IPC(8): H04W4/02H04W4/33H04W64/00G06F17/18G06F17/16
CPCH04W4/02H04W4/33H04W64/00G06F17/16G06F17/18
Inventor 梁伟尹康涌黄浩声陶风波张恒林元棣朱睿王静君贾萌萌
Owner STATE GRID JIANGSU ELECTRIC POWER CO ELECTRIC POWER RES INST
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