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The accurate measurement of ocean wave parameters using a single narrow-beam HF radar has been shown to be limited to particular wave field/radar beam configurations. In addition, because of symmetries in the scattering process, it is not possible to determine whether estimated wave directions are to the left or right of the radar beam. Measurement of the long-wave directional spectrum has also been limited by a requirement for at least 50 dB dynamic range in the Doppler spectrum of the backscattered radar signal. This paper describes the application of a model-fitting technique to a dual-radar system which overcomes the limitations found for a single system.
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Lucy R. Wyatt (1987) studied this question.
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