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The possibility of using HF-band synthetic aperture radar to detect buried objects from aboard of aircraft in on-line flight mode is experimentally demonstrated. The procedure of synthetic aperture in decameter radio waves is considered due to reflected signal coherent (regular) component availability.
This paper presents one of possible methods for sea surge spectral characteristics estimation based on analysis of scattered probe signal, consistent with surface impulse response. The relative mean square error of sea waves energy spectrum component amplitude measurement is estimated.