Near-field measurements of the scattering characteristics of a moving object with doppler filtering of the signal

The scattering characteristics of a moving object can be measured by insonifying it with a tone source and receiving the scattered signal with a linear array positioned in the near zone of the object. Possible algorithms of scattered signal processing aimed at determining the angular dependence of scatterer’s target strength are considered. On the basis of experimental data on the angular and frequency characteristics of reverberation caused by insonification of the water area with a tone source, the possibility of the aforementioned measurements is estimated and the minimal measurable values in the angular dependence of scatterer’s target strength are determined for a water area perturbed by weak wind waves.