METHOD OF EARTH SURFACE RELIEF MEASUREMENT Russian patent published in 2018 - IPC G01C11/00 G01S13/89 

FIELD: radio engineering, communication.

SUBSTANCE: earth surface relief measurement consists of sequential observation of the surface at a constant altitude of carrier flight and flight speed, at that the first observation session consisting of the emission of probing signals and reception of signals reflected from the Earth's surface with the synthesis of radar images (RI) under telescopic survey at the synthesis interval L, is carried out at the range to the surface R₁, elevation angle θ₁ and azimuth angle α₁, different from strictly lateral, i.e. less than 90°. After the carrier is naturally moved by a synthetic aperture radar (SAR) to the distance of the base of the interferometer B, the second observation session is made over the same surface region at the range R₂, azimuth α₂, elevation angle θ₂, also consisting in the emission of probing signals and the reception of signals reflected from the surface of the Earth with the synthesis of radar images during a telescopic survey in the synthesis interval L. After conducting a pair of observation sessions, a standard interferometric processing of the radar images pair is performed, and information on the relief of the underlying surface is extracted.

EFFECT: measuring the relief of the Earth's surface and forming a digital relief model using a radar with synthesized aperture mounted on a radar carrier with synthesized aperture.

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