Experimental study on Yellow River ice thickness monitoring testbased on UAV Radar technology
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Abstract:
River ice thickness is an important indicator of ice prevention. At present, the ice thickness is measured by drilling or contact-type GPR required stably freeze-up. Therefore, it is of great significance to actively explore more efficient non-contact ice thickness detection methods. The UAV was equipped with the GPR to detect the ice thickness of the Shensifenzi bend of the Yellow River. The radar propagation velocity in the ice was calculated by using ice thickness data from the field of artificial drill ing. The results showed that the distribution of ice thickness at the bend was uneven. The ice thickness on the concave bank was larger than that on the convex bank. The maximum ice thickness of the lead section was 91cm, the minimum ice thickness of the lead section was 19cm, and the ice thickness near the water surface was small. The ice thickness measured by radar was basically consistent with the measured by drilling, and the average error was less than 2 cm. The practice has proved that UAV radar im ages can directly reflect the air-ice interface and ice-water interface and ice thickness. The detection method has fast advantages, high efficiency and safety. The research results have important reference value for the development of new monitoring of the Yellow River ice thickness.
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