一种耦合卫星遥感和水动力学的洪水过程径流监测方法
By combining satellite remote sensing and hydrodynamic methods, a digital river cross-section was constructed, and the width and roughness of the river surface were inverted, solving the problem of monitoring river runoff during flood processes and achieving high-precision flow calculation and data acquisition.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- BEIJING NORMAL UNIVERSITY
- Filing Date
- 2025-08-07
- Publication Date
- 2026-07-17
AI Technical Summary
Existing technologies lack satellite-based methods for monitoring river runoff during flood processes. Peak flow is difficult to obtain accurately, fixed river roughness values lead to calculation biases, data is insufficient under cloudy and rainy conditions, continuous monitoring is costly, and it is difficult to achieve long-term and high-frequency river flow monitoring.
By combining satellite remote sensing and hydrodynamics, river topographic data is acquired through UAVs to construct digital river cross sections. SAR data is used to invert the river surface width, roughness is assigned pixel by pixel, and flow rate is calculated by combining hydraulic parameters. This enables simultaneous monitoring of multiple cross sections and real-time dynamic capture of changes in river slope and roughness.
It enables the rapid construction of remote sensing flow monitoring stations in areas without existing stations, improves the accuracy of flow calculation, optimizes the layout of traditional hydrological stations, provides long-sequence, highly reliable flow data, and finely depicts flow changes during flood processes.
Smart Images
Figure CN121185259B_ABST