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Research on Accuracy of River Velocity Measurement based on EM Simulation

This paper established a river flow velocity measurement model in the clutter background of microwave scattering signals generated by Pierson-Moscowitz spectrum. First, the cloud data of the river are generated based on the random wave model and an electromagnetic calculation model is established. Second, the echo signal of the river is obtained based on the fullwave computational electromagnetic algorithm. Finally, the doppler frequency shift of the echo signal is calculated to deduce the river flow speed. Simulation result show that the proposed river velocity microwave measurement model is valid which has high accuracy.