A.P. Sonin1

¹ JSC RTI (Moscow, Russia)

The article discusses the technology of synthetic aperture radars (SAR) testing using digital radio frequency memory (DRFM), which forms man-made maps of the surveyed Earth's surface. At the beginning of the article, a classical DRFM, which generates response radio signals with constant Doppler shifts during a radio pulses sequence for conventional radars without antenna aperture synthesizing, is briefly described. The impossibility of using this DRFM for SAR testing is shown. Next, DRFM, which forms false point targets in the SAR's image, suitable for testing of the SAR's basic characteristics, such as resolution, the level of side lobes of the response to a point target, and the dynamic range of the SAR, is described. The results of the development and testing of the DRFM module, which generates simulation marks with a user-defined location, are presented. And, in the main content of the article, DRFM, which is capable to form man-made maps of the Earth's surface in the SAR's images, is described. The structure of this DRFM, the principles of a response digital radio hologram (DRH) forming and the results of the synthesis of an artificial radar image in the SAR are presented.

in A.P. Synthetic Aperture Radar testing using Digital Radio-Frequency Memory with man-made map forming. Science Intensive Technologies. 2023. V. 24. № 2. P. 67−78. DOI: https://doi.org/10.18127/j19998465-202302-09 (in Russian)

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