Pinchuk

pp. 140-152

The paper proposes a development of the methodological support to determine vibration amplitude of the ship hull remotely using a coherent radar centimeter range on the variation of the Doppler signal spectrum reflected from a vibrating surface.It is proved that the level ratio of the spectral density at the frequency of vibration and at the frequencies of its multiples are determined by a single parameter – the phase modulation index, which is linearly related to the amplitude of vibration. As a result of field experiments it has been established that the energy of the surface gravity – capillary waves range has a high correlation with the wind speed. The paper shows a method of restrictions due to interference caused by the scattering a radio signal from the water surface.