Non-contact flood discharge measurements using an X-band pulse radar (I) theory

Ming Ching Lee, Chan Ji Lai, Jan Mou Leu, William J. Plant, William C. Keller, Ken Hayes

Research output: Contribution to journalArticlepeer-review

26 Citations (Scopus)


This article describes a non-contact method for measuring surface velocity and discharge in a natural channel. The X-band pulse (9.36 GHz) radar, developed by the Applied Physics Laboratory of the University of Washington, was used to scan instantaneously the lateral distribution of surface velocity across a river section, according to Bragg scattering from short waves produced by turbulent boils on the surface of the river. Based on the assumption that the vertical velocity distribution follows a universal power or logarithmic law, the discharges were estimated.

Original languageEnglish
Pages (from-to)265-270
Number of pages6
JournalFlow Measurement and Instrumentation
Issue number5-6
Publication statusPublished - 2002 Dec

All Science Journal Classification (ASJC) codes

  • Modelling and Simulation
  • Instrumentation
  • Computer Science Applications
  • Electrical and Electronic Engineering


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