A single-station landslide deformation monitoring and early warning method based on gnss environment model

An environmental model and deformation monitoring technology, which is applied to alarms, measuring devices, and radio wave measurement systems, can solve the problems of high early warning costs and low success rates, and achieve the effect of reducing monitoring costs

Active Publication Date: 2022-08-05
NAT TIME SERVICE CENT CHINESE ACAD OF SCI
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  • Abstract
  • Description
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  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Aiming at the problems of high early warning cost and low success rate of existing GNSS landslide deformation monitoring technology, the present invention provides a single-station landslide deformation monitoring and early warning method based on GNSS environmental model

Method used

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  • A single-station landslide deformation monitoring and early warning method based on gnss environment model
  • A single-station landslide deformation monitoring and early warning method based on gnss environment model
  • A single-station landslide deformation monitoring and early warning method based on gnss environment model

Examples

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Effect test

Embodiment 1

[0038] Example 1: This example designs a single-station landslide deformation monitoring and early warning method based on the GNSS environment model, which is mainly used to propose a new monitoring and early warning method based on consumer-grade single-frequency GNSS. figure 1 The method flow chart is described in detail.

[0039] S1: Deploy terminal equipment and collect data

[0040] Deploy the GNSS application terminal on the monitoring point (landslide deformation feature point), and collect the original observation data of the monitoring point through a wireless communication network such as 4G or 5G after starting up, and the original observation data includes the original pseudorange and ephemeris data; Among them, the GNSS application terminal can be selected as consumer-grade single-frequency GNSS, or it can be a professional type with centimeter-level accuracy or an ordinary measurement type with sub-meter-level accuracy. GNSS includes one or more of BDS / GPS / GLONA...

Embodiment 2

[0062] Example 2: In this example, the method in Example 1 is used for actual measurement, and the data of a landslide monitoring point in the creep stage is selected for the experiment. The monitoring point gradually sinks over time, and the original observation data is collected and the environment model, the results are figure 2 shown, figure 2 The direction indicated by the arrow in the middle represents the modeling results of 19 consecutive weeks from the 1st week to the 19th week. It can be seen that with the creep movement of the monitoring point, the satellite elevation angle of the environmental model at the same azimuth gradually increases.

[0063] combine image 3 Given the three-dimensional position change and correlation coefficient time series diagram of the monitoring point, image 3 The middle horizontal axis represents the time axis, the left vertical axis represents the 3D vector displacement, and the right vertical axis represents the correlation coeff...

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Abstract

The invention discloses a single-station landslide deformation monitoring and early warning method based on a GNSS environment model. Correlation coefficient solution, early warning application. The monitoring and early warning method of the present invention mainly uses a low-cost consumer-grade GNSS positioning terminal to collect data and perform environmental modeling, and identify the acceleration state of the landslide early and carry out effective early warning through the change trend of the correlation coefficient of the environmental model, which not only reduces the monitoring cost The price is greatly reduced, and it provides new ideas and methods for GNSS landslide monitoring and early warning.

Description

technical field [0001] The invention belongs to the technical field of monitoring and early warning, and in particular relates to a single-station landslide deformation monitoring and early warning method based on a GNSS environment model. Background technique [0002] my country is one of the countries with the most serious geological landslide disasters in the world. According to the incomplete statistics of the National Geological Hazard Network, in 2019 alone, 6,181 geological disasters occurred nationwide, with a direct economic loss of 2.77 billion yuan; 948 geological disasters were successfully predicted, involving more than 20,000 people who may be injured, avoiding a direct economic loss of 830 million yuan. Disaster prevention and mitigation have achieved remarkable results. However, landslide disaster losses account for 61.2% of the total disasters. The implementation of efficient monitoring and early warning of landslides has important practical significance fo...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01S19/14G01S19/33G08B21/10H04L67/12
CPCG01S19/14G01S19/33G08B21/10H04L67/12H04L67/025
Inventor 韩军强涂锐卢晓春张睿范丽红张鹏飞洪菊刘金海王星星
Owner NAT TIME SERVICE CENT CHINESE ACAD OF SCI
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