基于侧扫雷达的冰期河流流速测量及初步试验OA

To address the low efficiency and poor safety of traditional river velocity measurement methods during the ice-period,this paper proposed a side-scan radar-based solution for measuring river flow velocity.It analyzed the propagation characteristics of electromagnetic waves in ice-period river measurements and confirmed corresponding theoretical models.Based on existing side-scan radar technology,the study conducted parameter design and algorithm upgraded for ice-period river applications.The upgraded side-scan radar was deployed at a hydrological station on the Heihe River,where ice-period flow measurement trials were carried out from 2020 to 2024,enabling real-time monitoring throughout the entire river ice cycle-including freezing,ice cover formation,thawing,and open-water periods.By determining the optimal antenna tilt angle through experiments and analyzing the range-Doppler spectrum data collected under different ice conditions,the system achieved accurate distance measurement and spectral feature identification,providing reliable data support for dynamic ice condition monitoring and offering a reference for the development and application of future ice-period river measurement equipment.