The invention relates to a method in a radar system, wherein: in a first non-coherent transmitting-receiving unit (NKSE1), a first signal (sigTX1) is generated and is transmitted, in particular emitted, via a path (SP); in a further, in particular second non-coherent transmitting-receiving unit (NKSE2), a first signal (sigTX2) is generated and is sent, in particular emitted, via the path (SP); in the first transmitting-receiving unit (NKSE1), a comparison signal (sigC12) is formed from the first signal (sigTX1) of the first transmitting-receiving unit and from such a first signal (sigTX2) received from the further transmitting-receiving unit (NKSE2) via the path (SP); and in the further transmitting-receiving unit (NKSE2), a further comparison signal (sigC21) is formed from the first signal (sigTX2) of the further transmitting-receiving unit and from such a first signal (sigTX1) received from the first transmitting-receiving unit (NKSE1) via the path (SP), wherein the further comparison signal (sigC21) is transmitted, in particular communicated, to the first transmitting-receiving unit (NKSE1) by the further transmitting-receiving unit (NKSE2). The invention further relates to a radar system and to a device of a radar system that perform such a method.

Monopulse synthetic aperture radar for fast, high-resolution imaging of ground and/or airborne objects consists set of non-scanning transmitting and receiving antennas with overlap antenna patterns positioned in quadrature or multi-axis directions and covering wide space sector, wherein each receiving antenna is coupled to monopulse processor and separate receiver chain coupled with digital multi-channel processor. Application of monopulse and digital multi-axis multi-channel processing of all signals in receiving chains provides simultaneous fast signal processing from all space sectors. The monopulse method combined with multi-channel digital processing, where amplitudes, phase, and frequency components shift of receiving signals processing relative to signals in overlap receiving antenna beams provides 3-5 times higher imaging resolution and allows to suppression influence of media and clutter. An array of directional antennas may be arranged for multi-frequency, multi-mode regimes.