Ground-Based SAR Secondary Disaster Early Warning
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Solution Overview
Problem
Existing geological disaster warning methods struggle with accurately identifying and warning of secondary disasters such as landslides and collapses due to false positives, missed reports, and incomplete deformation data, especially in mountainous terrains where geological forces and external actions can lead to sudden and concealed disasters.
Innovation Solution
A secondary disaster warning method based on ground-based SAR monitoring deformation data, which involves real-time monitoring of unstable areas, constructing displacement-time curves, and using displacement change triangular area models to analyze and warn of impending secondary disasters by dividing the disaster development process into initial, constant velocity, and acceleration stages with corresponding warning levels.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If ground-based SAR monitoring equipment is installed in danger zones, then measurement precision of deformation data is improved, but ease of operation deteriorates due to impracticality of timely installation
Solution Approach 1:
The patent applies preliminary action by pre-installing ground-based SAR monitoring equipment in potentially dangerous areas before geological disasters occur. This allows the equipment to be ready for immediate data collection when disasters happen, eliminating the need for timely installation during emergency situations while maintaining high measurement precision of deformation data.
2Reliability
If traditional three-stage deformation warning models are used, then reliability of warning identification is improved, but measurement precision deteriorates due to incomplete deformation data in sudden concealed disasters
Solution Approach 1:
The patent applies parameter changes by transforming the warning identification approach from relying on complete three-stage deformation data to using displacement triangular area parameters that can be effectively calculated from partial deformation data. This parameter transformation allows the system to maintain reliable warning identification even when deformation data is incomplete due to the sudden and concealed nature of secondary geological disasters.
3Productivity
If displacement triangular area model is used, then productivity of disaster stage identification is improved, but device complexity increases due to data processing requirements
Solution Approach 1:
The patent applies parameter changes by using displacement triangular area as a simplified parameter that can be quickly calculated from deformation monitoring data. This parameter transformation enables rapid identification of disaster development stages without requiring complex analysis systems, thereby improving productivity while keeping the data processing system relatively simple.
4Loss of time
If existing warning models are used, then loss of time in warning issuance is reduced, but reliability deteriorates due to false positives and missed reports
Solution Approach 1:
The patent applies parameter changes by using displacement triangular area parameters instead of traditional deformation stage parameters. This parameter transformation enables the system to quickly identify disaster stages and issue warnings in real-time while maintaining high reliability by accurately distinguishing between different disaster development stages, thereby reducing both false positives and missed reports.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This method enables more accurate, direct, and effective warnings of secondary geological disasters by comprehensively and rapidly identifying the development stages and deformation evolution trends of unstable areas, ensuring the safety of emergency response personnel.
Implementation Method 1
ground-based SAR (Synthetic Aperture Radar) monitoring data
Data Source
AI summary
A secondary disaster early warning method based on ground-based SAR monitoring of deformation data includes (1) real-time monitoring of a secondary disaster unstable area through ground-based SAR to obtain deformation monitoring data; (2) constructing a displacement-time curve generated by the secondary disaster unstable area over time; setting a monitoring period, and based on the displacement-time curve, constructing a displacement change triangular area model; (3) based on the displacement change triangular area model, constructing an area-time curve, and obtaining the area-time curve change trend and the displacement triangular area in the displacement-time curve according to the monitoring period; (4) dividing the secondary disaster development process into an initial deformation stage, a constant velocity deformation stage, and an accelerated deformation stage; (5) setting early warning levels corresponding to each stage for phased secondary disaster early warning; and (6) quickly and comprehensively identifying the secondary disaster development stage and deformation evolution trend.