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International Journal of Antennas and Propagation
Volume 2017 (2017), Article ID 4792324, 11 pages
Research Article

Two-Dimensional River Flow Patterns Observed with a Pair of UHF Radar System

Electronic Information School, Wuhan University, Wuhan 430072, China

Correspondence should be addressed to Yidong Hou

Received 7 November 2016; Revised 15 March 2017; Accepted 30 March 2017; Published 20 April 2017

Academic Editor: Diego Masotti

Copyright © 2017 Yidong Hou et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


A pair of ultrahigh-frequency (UHF) radars system for measuring the two-dimensional river flow patterns is presented. The system consists of two all-digital UHF radars with exactly the same hardware structure, operating separately at 329–339 MHz and 341–351 MHz. The adoption of direct radio frequency (RF) sampling technique and digital pulse compression simplifies the structure of radar system and eliminates the distortion introduced by the analog mixer, which improves the SNR and dynamic range of the radar. The field experiment was conducted at Hanjiang River, Hubei province, China. Over a period of several weeks, the radar-derived surface velocity has been very highly correlated with the measurements of EKZ-I, with a correlation coefficient of 0.958 and a mean square error of 0.084 m/s.