A technique is developed to separate the incident and reflected waves propa
gating on a known current in a laboratory wave-current flume by analyzing w
ave records measured at two or more locations using a least squares method.
It can be applied to bath regular and irregular waves. To examine its perf
ormance, numerical tests are made for waves propagating on quiescent or flo
wing water. In some cases, to represent the signal noise and measurement er
ror, white noise is superimposed on the numerically generated wave signal.
For all the cases, good agreement is observed between target and estimation
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