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A Track Deformation Detection Method Based on Multi-Baseline Radar

A detection method and multi-baseline technology, applied in the direction of railway vehicle shape measuring device, electric/magnetic solid deformation measurement, electromagnetic measurement device, etc., can solve the problems of complex data processing and large amount of calculation, and reduce the influence of distance measurement error , to achieve the effect of measurement

Active Publication Date: 2019-08-20
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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Problems solved by technology

Synthetic Aperture Radar (SAR) measurement has the characteristics of all-weather and all-time. Interferometric SAR measurement technology can be used to obtain small deformation changes on the ground, but this technology requires a spaceborne or airborne platform, and the data processing is complex and the amount of calculation is large.

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  • A Track Deformation Detection Method Based on Multi-Baseline Radar
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Embodiment Construction

[0050] In order to facilitate those skilled in the art to understand the technical content of the present invention, the content of the present invention will be further explained below in conjunction with the accompanying drawings.

[0051] In order to describe content of the present invention conveniently, at first do following term definition:

[0052] Definition 1. Northeast sky coordinate system

[0053] The northeast sky coordinate system is also called the station center coordinate system, with the station center (such as the GPS receiving antenna) as the origin of the coordinate system, the z-axis coincides with the normal of the ellipse, the upward direction is positive (celestial direction), and the y-axis coincides with the semi-minor axis of the ellipse ( Northward), the Cartesian coordinate system formed by the coincidence of the x-axis and the semi-major axis of the earth ellipse (eastward). For details, please refer to "Introduction to Geographic Information Sy...

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Abstract

The invention discloses a method for detecting track deformation based on multi-baseline radar, which is applied in the field of radar detection. The distance measurement realizes the measurement of the track deformation, and adopts the joint ranging method of the chirp signal and the frequency sweep signal, which reduces the influence of the ranging error well.

Description

technical field [0001] The invention belongs to the field of radar detection, in particular to a track deformation measurement technology. Background technique [0002] With the development of China's economy, rail transit, as one of the important means of transportation, is of great value to the development of my country's national economy. During the running of the train, the dynamic load acting on the base surface will cause the foundation to change, which may lead to the settlement of the track in the long-term process. If the high-speed railway subsides, it will lead to catastrophic consequences such as deformation of the roadbed and lines, and may cause bridge head jumping and road subsidence, which will affect the normal running of trains in the slightest and cause accidents in severe cases. Because track settlement has a great impact on train safety and is a strong hazard, it has become a research hotspot in the field of rail transportation. According to the invent...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01B7/16B61K9/08
Inventor 师君阴从基张晓玲
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA
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